Technical info

JST PHD 2.0 Connector Complete Guide: Dual Row at 3A, the Page That Undersells Its Own Part & the KONNRA KR2005 Equivalent

Analysis of Core Technologies and Application Scenarios of New Energy Connectors

Quick answer: JST PHD is a 2.0mm pitch dual-row wire-to-board crimp connector with a mounting height of 8.8mm and a depth of 5.0mm. It is rated 3A AC/DC at AWG #22 and 250V AC/DC over −25°C to +85°C, with 20mΩ maximum contact resistance and a 40mΩ maximum allowance after environmental testing. It comes in 8 to 34 circuits — fourteen sizes, in even numbers only — with socket housings, and top-entry and side-entry headers. The KONNRA KR2005 is the cross-reference equivalent, and on the two parameters that matter most it is unusually strong: its housing dimensions match JST’s exactly at every overlapping circuit count, and its published contact resistance matches JST’s on both the initial and the post-environmental figure.

But the KR2005’s own product page contains a problem worth stating before anything else, because it is the kind of problem that costs a design.

The page’s Overview paragraph describes a different connector from the one the page’s own specification table describes. It says the series is “rated at 2 A and 250 V”, that it “operate[s] reliably over a temperature range of −25°C to +85°C”, and that it comes in “wire-to-wire and wire-to-board setups”. The specification table directly above it, the seven-page product specification, and all four engineering drawings say 3A, −40°C to +105°C, and wire-to-board. The Overview understates the current rating by a third, understates the temperature range by 20°C at each end, and claims a capability the product does not have.

And there is a detail in that error that tells you how it happened: −25°C to +85°C is JST’s rating for the PHD. The Overview is describing the original part, not the replacement. Anyone building a specification from that paragraph would be documenting a part that is worse than both the original and the actual cross-reference.

Every figure attributed to JST or KONNRA below is traceable to a source listed in the final section. Three JST specification values could not be recovered from the datasheet and are marked as such rather than filled in.

At a glance

Parameter JST PHD KONNRA KR2005 Status
Pitch 2.0mm 2.00mm Match
Rows 2 (dual row) 2 Match
Mounting height / depth 8.8mm / 5.0mm not stated —
Rated voltage 250V AC/DC 250V AC/DC Match
Rated current 3A AC/DC at AWG #22 3A AC/DC at AWG #24 Same rating, different qualified gauge
Temperature range −25°C to +85°C −40°C to +105°C Differs (20°C both ends)
Contact resistance 20mΩ max initial · 40mΩ max after environmental tests 20mΩ max initial · 40mΩ max after Match on both figures
Insulation resistance not recoverable from the datasheet 1,000MΩ min See note
Withstanding voltage not recoverable from the datasheet 800V AC / 1 minute See note
Applicable wire #28–24 and #26–22 (two contacts) — union #28–22 #24 to #28 No AWG #22 or #23
Insulation O.D. 0.9–1.5mm · 1.0–1.5mm (per contact) 0.9 to 1.40mm Differs at the top
Circuits 8 to 34 (14 sizes, even only) undefined to undefined (19 sizes) KONNRA extends both ends
Contacts SPHD-002T-P0.5 · SPHD-001T-P0.5 T20050P***01A —
Contact base metal Phosphor bronze, tin-plated Phosphor bronze, tin over nickel Match on base metal
Housing material PA66 (glass-filled) / PA66 PA66 UL94 V-0 Close
Wafer post material Copper alloy, copper-undercoated, tin-plated Brass, tin over nickel Differs
PCB thickness value not recoverable from the datasheet not stated Both open
Wafer orientations top entry and side entry 180° and 90° (both DIP) Match in kind
Page-vs-specification — Overview contradicts the specification table on three points See below

KR2005 — KONNRA's JST PHD 2.0 dual-row equivalent

KR2005 — KONNRA’s JST PHD 2.0 dual-row equivalent

Why three JST values are marked “not recoverable.” The PHD datasheet renders part of its text through an embedded font subset that our extraction could not decode, and three figures in the JST specification block are affected: the applicable PC board thickness, the insulation resistance and the withstanding voltage. Everything else on the JST side of this comparison — current, voltage, temperature, contact resistance, wire range, insulation diameters, circuit counts, dimensions, materials, part numbers and packaging — came through cleanly and is used below. We are not going to infer the three missing figures from other JST series, because a withstanding voltage is exactly the kind of number a qualification file depends on. If you need them, ask us and we will obtain them from JST’s documentation directly rather than from this page.

The page that undersells its own product

This is the most actionable finding on this page, and it is worth taking in full because it is easy to check and easy to act on.

KONNRA’s KR2005 product page contains a specification table and, below it, an Overview paragraph. The table and the paragraph disagree on three separate points:

Point Specification table on the page Overview paragraph on the same page Which is right
Current 3A “rated at 2 A” 3A — the table, the product specification §4.0 (“3A(24AWG)”) and all four drawings agree
Temperature −40℃～+105℃ “(−25°C to +85°C)” −40 to +105°C — the table, the specification §4.0 and all four drawings agree
Configuration (not stated in the table) “wire-to-wire and wire-to-board setups” Wire-to-board only — the product’s four components are a housing, a terminal and two DIP wafers

On current, the Overview understates the part by a third. The KR2005 is a 3A connector. A reader who takes the Overview figure would document it as 2A and might reject it for a 2.5A requirement that it actually meets.

On temperature, the Overview understates the part by 20°C at each end. The part is rated −40°C to +105°C. The Overview says −25°C to +85°C.

And that is the tell. −25°C to +85°C is exactly JST’s published rating for the PHD — the connector the KR2005 replaces. So the Overview is not a random error; it is a description of the original part, carrying the original’s temperature range and a current figure that appears elsewhere in KONNRA’s catalogue on the two adjacent 2A products. It reads as text written against a different product and never corrected.

On configuration, the Overview claims a capability the part does not have. The KR2005 is a wire-to-board connector. KONNRA does make a 2.0mm wire-to-wire product — it is a separate series in the same catalogue — but it is not this one. A designer who reads “wire-to-wire and wire-to-board” and specifies the KR2005 for a cable-to-cable joint has specified the wrong architecture entirely, and the mistake will not be caught by any electrical parameter.

What to do about it

Cite the specification, not the Overview. For the KR2005, the controlled documents are PS-KR2005-01 (which states 250V, 3A(24AWG), −40°C ~ +105°C and AWG 24#–28# at §4.0) and the four engineering drawings (which each repeat 3A, 250V, −40°C ~ +105°C, 1,000MΩ/min, 800V AC/minute and 20mΩ/max).

And note that we are reporting the error rather than quietly quoting around it. The Overview paragraph is wrong on three points and it is wrong in the direction that makes the product look weaker or different than it is. Our engineering team can confirm the correct values in writing for your specific part number — ask, and we will put the specification reference against each figure.

And one thing the page gets right that is worth repeating

The Overview is wrong on those three points, but the page’s specification table is correct on every value we checked against the controlled documents — current, voltage, insulation diameter, withstanding voltage, temperature range, contact resistance and insulation resistance all agree with PS-KR2005-01. The error is confined to the prose. That matters because it means the correction is a copy edit rather than a documentation review, and it means a reader who uses the table is not misled at all.

The one difference between the table and the specification is a matter of formatting, not substance. The table gives the insulation diameter as “0.9 to 1.4mm”; PS-KR2005-01 §4.0 gives “0.90 to 1.40 mm”. Same window.

The rating is the same. The conductor it is qualified at is not.

Both manufacturers publish 3A AC/DC, and both publish 250V AC/DC. That looks like a clean match until you read the bracket.

  • JST: 3A AC/DC (AWG #22)
  • KONNRA: 3A(24AWG) AC/DC

They are not the same claim. A current rating is qualified by the conductor it was established with, because the wire is part of the heat path. JST established 3A through an AWG #22 conductor; KONNRA publishes 3A through an AWG #24.

And the KR2005 does not accept AWG #22 at all

This is what turns the bracket difference into a design issue. The two manufacturers’ wire ranges:

JST PHD KONNRA KR2005
Contact SPHD-002T-P0.5 AWG #28 to #24 (0.08–0.21mm²), insulation 0.9–1.5mm —
Contact SPHD-001T-P0.5 AWG #26 to #22 (0.13–0.33mm²), insulation 1.0–1.5mm —
Contact T20050P***01A — AWG #24 to #28, insulation 0.9–1.40mm
Union of the range AWG #28 to #22 AWG #24 to #28

JST reaches AWG #22 through a second contact. The KR2005’s single terminal stops at AWG #24. So:

  • AWG #22 and AWG #23 are inside JST’s range and outside the KR2005’s.
  • AWG #22 is the exact gauge at which JST qualifies the PHD’s 3A rating.

The practical consequence. If your harness uses AWG #22 — which is a natural choice for a 3A circuit, and is the wire JST’s own rating is written against — the KR2005 does not accept it. That is not a marginal note; it is a range limit at the specific gauge the original’s headline rating was established on. If your harness uses AWG #24, #26 or #28, the KR2005 covers it.

And be careful about the direction of the claim. The KR2005 publishing 3A at AWG #24 is not the same as saying it is a 3A connector on AWG #24 in every application. KONNRA’s specification does require the part to hold a 30°C maximum temperature rise at rated current (§7.2) — but it does not state which wire gauge that test was run at, whereas JST’s rating is explicitly tied to #22. If your 3A requirement is marginal, that is the question to ask: at which gauge was the temperature-rise test performed?

Also note the insulation window. JST’s two contacts accept up to 1.5mm of insulation (#28–24 at 0.9–1.5mm; #26–22 at 1.0–1.5mm). The KR2005 publishes 0.9 to 1.40mm. A wire with 1.45mm insulation fits JST’s PHD and is outside the KR2005’s published window — a small difference, but the insulation crimp height is set against that diameter and the window is only ±0.05mm wide on this part. Measure the insulation rather than reading it off a catalogue page.

Where the ratings match exactly — and one place where they match unusually well

Rated voltage: 250V AC/DC on both. Identical figures, same qualifier. For a 2.00mm dual-row connector, 250V is the high end of the class.

Contact resistance: 20mΩ maximum on both — and 40mΩ maximum after environmental testing on both. That second figure is the one worth pausing on.

JST’s PHD specification publishes contact resistance as a pair: initial value 20mΩ max, and after environmental tests 40mΩ max. KONNRA’s KR2005 publishes 20mΩ max at §5.1 as the initial value, and 40mΩ max in §7.1 (after 30 cycles), §7.3 (vibration), §7.4 (shock), §7.5 (heat), §7.6 (cold), §7.7 (humidity) and §7.8 (thermal shock).

The same two figures, at the same two points in the test sequence. That is a stronger form of agreement than a matching initial value alone, because it means the cross-reference was specified against the original’s degradation behaviour and not only its nameplate. On several other 2.00mm series we have documented, the cross-reference publishes only the initial figure and the original publishes only the post-test figure, leaving the comparison open. Here it closes. A part that is allowed 40mΩ after exposure, exactly as the original is, is a part whose end-of-life contact behaviour is specified the same way.

The three JST values we could not recover

The PHD datasheet renders part of its specification block through an embedded font subset that our extraction could not decode, and two figures in that block are affected: the withstand voltage and the insulation resistance. The applicable PC board thickness is affected too.

We are not going to fill those in from another JST series. A withstanding voltage in particular is the kind of number that ends up in a qualification file, and inferring one series’ proof voltage from another series’ datasheet would be exactly the sort of shortcut that looks harmless until it is audited. The KR2005 publishes 800V AC for one minute (EIA-364-20A) and 1,000MΩ minimum (EIA-364-21B) — and those are KONNRA’s own tested figures, published with their test standards. If your qualification requires the corresponding JST figures, ask us and we will get them from JST’s documentation rather than from a page like this one.

What dual row actually buys — and what it costs

The PHD’s whole reason to exist is that it is dual row in a pitch where single-row connectors dominate. That changes four things, and the trade can be quantified from JST’s own two datasheets.

It buys you board length, and the amount is large

Take 16 circuits — a count both series offer — and compare JST’s own published housing dimensions:

Single row (JST PH) Dual row (JST PHD)
Housing length at 16 circuits 30.0mm 14.0mm
How it is built 16 positions × 2.0mm 2 rows × 8 positions × 2.0mm

Dual row removes 16.0mm of board length at 16 circuits — 53% of the footprint. And the relationship holds across the range: a single-row housing grows by 2.0mm per circuit, while a dual-row housing grows by 2.0mm per pair of circuits, because a pair consumes two positions.

That is the entire commercial case for this architecture. On a board with several 2.0mm connectors, halving each connector’s length frees board area that no amount of electrical improvement can recover. It is also why a dual-row 2.0mm connector is frequently the only way to fit a high circuit count into a height- or width-constrained product.

It costs you height and depth, and the amount is small

JST PH (single row) JST PHD (dual row)
Mounting height 8.0mm 8.8mm
Cross-pitch dimension 4.5mm width (top entry) 5.0mm depth

So at 16 circuits you trade 16.0mm of length for 0.8mm of height and 0.5mm of depth. Whether that is a good trade is a mechanical question about your enclosure, not an electrical one — but it is worth knowing that the height penalty on this particular architecture is under a millimetre, which is much less than a designer unfamiliar with dual-row 2.0mm connectors might assume.

It changes the force profile — but less than you would expect

See the force section below. The short version: up to 16 total circuits, the dual-row part and the single-row part in this catalogue require identical insertion force per circuit, and the dual-row part holds harder by a fixed amount. The intuition that “two rows means twice the insertion force” is wrong on this family.

And it adds one mechanical complication

On a dual-row connector, row and position orientation matters in a way it does not on a single row. A single-row part can only be inserted one way round; a dual-row part has a defined row 1 and row 2, and its numbering convention is visible in the drawings — JST’s housing and header tables and KONNRA’s drawings both carry explicit “Circuit 1” and “Circuit 2” markings, with row 1 starting at the latch side and row 2 immediately below it.

Get the numbering wrong and the harness is mirror-imaged. That is a wiring error that passes continuity testing on a single circuit and fails in the field — the classic dual-row failure mode, and the reason both manufacturers mark the first circuit on the drawing rather than leaving the assembler to assume.

KR2005 wire-to-board connector

KR2005 wire-to-board connector

The circuit range: the KR2005 covers everything JST makes, plus five sizes JST does not

JST’s PHD is published in fourteen sizes, and they are all even numbers:

8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34 circuits

In dual-row terms that is 2×4 through 2×17. There is no 4-circuit or 6-circuit PHD, and there is nothing above 34 circuits.

The KR2005 is published in nineteen sizes:

undefined through undefined — that is 4 to 40 circuits

Set the two lists against each other:

Row-pair count Total circuits JST PHD KONNRA KR2005
2×2 4 ❌ ✅
2×3 6 ❌ ✅
2×4 8 ✅ ✅
… … ✅ ✅
2×17 34 ✅ ✅
2×18 36 ❌ ✅
2×19 38 ❌ ✅
2×20 40 ❌ ✅

All fourteen JST sizes are covered, and five sizes have no JST counterpart at all — two below the JST range (2×2 and 2×3) and three above it (2×18, 2×19 and 2×20).

That is a genuinely useful position and also a caution. Useful, because a design needing a 4-circuit dual-row 2.0mm connector, or a 40-circuit one, has no JST PHD to cross-reference against and the KR2005 is the part that exists. A caution, because those five sizes are extensions rather than substitutions: there is nothing on the JST side to compare them with, and they should be qualified as new parts rather than as documented equivalents. The fourteen overlapping sizes are where the cross-reference claim actually lives.

Note the contrast with the two other 2.0mm series we have documented. On one, JST’s range skipped a position count entirely (no 5-circuit part); on another, the cross-reference added a single size above the original. Here the cross-reference is a strict superset — nineteen sizes containing the original’s fourteen. If your circuit count is 8 to 34 and even, the KR2005 covers it exactly.

And the housing dimensions match JST exactly at every overlapping size

This is the strongest dimensional agreement we have documented on any series in this catalogue, and it is checkable to the last decimal.

Total circuits Row pairs JST PHDR-xxVS A / B KONNRA H20050*****01B A / B
8 2×4 6.0 / 9.9 6.00 / 9.90
10 2×5 8.0 / 11.9 8.00 / 11.90
12 2×6 10.0 / 13.9 10.00 / 13.90
14 2×7 12.0 / 15.9 12.00 / 15.90
16 2×8 14.0 / 17.9 14.00 / 17.90
18 2×9 16.0 / 19.9 16.00 / 19.90
20 2×10 18.0 / 21.9 18.00 / 21.90
22 2×11 20.0 / 23.9 20.00 / 23.90
24 2×12 22.0 / 25.9 22.00 / 25.90
26 2×13 24.0 / 27.9 24.00 / 27.90
28 2×14 26.0 / 29.9 26.00 / 29.90
30 2×15 28.0 / 31.9 28.00 / 31.90
32 2×16 30.0 / 33.9 30.00 / 33.90
34 2×17 32.0 / 35.9 32.00 / 35.90

All fourteen sizes, both dimensions, exact. The A dimension advances 2.00mm per row pair on both sides; the B dimension advances 2.00mm per row pair on both sides; and at every size the two manufacturers nominate the same nominal. There is no accumulated drift, no rounding difference and no tolerance-level discrepancy anywhere in the fourteen overlapping sizes.

And the two wafer orientations share one footprint. KONNRA’s DIP 90° wafer (C2005RD***22T0101PC) and DIP 180° wafer (C2005VD***22T0101PC) publish identical dimension tables — A from 2.00mm to 38.00mm, B from 6.00mm to 42.00mm, in 2.00mm steps across all nineteen sizes. So the wire-exit direction does not change the board footprint, and the orientation decision can be deferred past layout.

One dimension is 0.10mm larger than JST’s comparable figure

The housings match exactly. The wafer does not quite, and it is worth being precise about it rather than rounding it away.

KONNRA’s DIP wafer B dimension runs 6.00mm at 2×2 to 42.00mm at 2×20 — consistently A + 4.00mm. JST publishes its header length as a B dimension running 9.9mm at 8 circuits to 35.9mm at 34 circuits. Compare the overlapping sizes:

Total circuits JST header B KONNRA wafer B Difference
8 9.9 10.00 +0.10
34 35.9 36.00 +0.10

The wafer is consistently 0.10mm longer than JST’s header at the same circuit count, and the A dimension matches exactly at both ends. The 0.10mm sits inside KONNRA’s own general tolerance for two-decimal dimensions (X.XX ± 0.20) and is therefore not a fit problem — but if your enclosure or a neighbouring component is dimensioned tightly against JST’s header length, you are one tenth of a millimetre longer than you planned, and the housing is not.

The force table: two regimes, a fixed loss, and an architectural equality

KONNRA publishes a complete insertion and withdrawal force table for the KR2005 across the full range, from 2*2 to 2*20, both as new and after the rated 30 cycles.

Row pairs Total circuits Insertion force (max) Withdrawal (min), initial Withdrawal (min), after 30 cycles
2×2 4 3.50 1.00 0.80
2×3 6 4.50 1.20 1.00
2×4 8 5.50 1.40 1.20
2×5 10 6.50 1.60 1.40
2×6 12 7.50 1.80 1.60
2×7 14 8.50 2.00 1.80
2×8 16 9.50 2.20 2.00
2×9 18 10.00 2.30 2.10
2×10 20 10.50 2.40 2.20
2×11 22 11.00 2.50 2.30
2×12 24 11.50 2.60 2.40
2×13 26 12.00 2.70 2.50
2×14 28 12.50 2.80 2.60
2×15 30 13.00 2.90 2.70
2×16 32 13.50 3.00 2.80
2×17 34 14.00 3.10 2.90
2×18 36 14.50 3.20 3.00
2×19 38 15.00 3.30 3.10
2×20 40 15.00 3.40 3.20

(All values in kgf. 1 kgf = 9.8N.)

The two regimes

Read the insertion-force column as a sequence and it changes slope exactly once:

  • From 2×2 to 2×8, it rises by 1.00 kgf per row pair — 3.50, 4.50, 5.50, 6.50, 7.50, 8.50, 9.50. Seven values, six steps of exactly 1.00.
  • From 2×8 to 2×19, it rises by 0.50 kgf per row pair — 9.50, 10.00, 10.50 … 15.00. Eleven more values, eleven steps of exactly 0.50.

In per-circuit terms that is a clean statement: the insertion force rises by 0.50 kgf per circuit up to 16 circuits, and by 0.25 kgf per circuit above 16. In closed form, for any count at or below 16 circuits, insertion force (max) = 1.50 + 0.50 × (circuits).

The withdrawal column follows the same shape with half the increments: +0.20 kgf per row pair up to 2×8, then +0.10 per row pair. Per circuit, +0.10 up to 16 circuits and +0.05 above, or withdrawal force (min) = 0.60 + 0.10 × (circuits) up to 16.

The slope change at 16 circuits is not an accident of the table. It is where a 2.00mm-pitch contact pair starts to be limited by something other than the contact count, and both KONNRA columns change slope at the same point.

And one row does not fit

The 2×20 row’s insertion force is 15.00 kgf, where the second regime demands 15.50. Every other row in the column obeys its regime without exception; the 2×20 row repeats the 2×19 value instead of taking the next step. The withdrawal values at 2×20 do continue correctly (3.40 and 3.20), so the anomaly is confined to the insertion-force cell.

We are reporting that as an observation on the published table rather than silently correcting it. It may be a deliberate cap — a designer specifying the top of the range should plan for 15.00 kgf of insertion force, not 15.50 — or it may be a transcription slip. Either way, if you are using a 2×20 part, plan against 15.00 kgf and confirm with us, because the difference between the two readings is half a kilogram of assembly force.

The retention loss is a fixed 0.20 kgf — at every one of the nineteen sizes

Subtract the last column from the third and the result is the same number everywhere:

  • 2×2: 1.00 → 0.80
  • 2×8: 2.20 → 2.00
  • 2×14: 2.80 → 2.60
  • 2×20: 3.40 → 3.20

Exactly 0.20 kgf, at all nineteen position counts. So the retention lost across the rated 30-cycle life is a fixed absolute amount, and the relative loss falls as the connector grows:

Row pairs Initial withdrawal After 30 cycles Relative loss
2×2 1.00 kgf 0.80 kgf 20.0%
2×8 2.20 2.00 9.1%
2×20 3.40 3.20 5.9%

A 4-circuit KR2005 loses a fifth of its withdrawal force across its rated life. A 40-circuit one loses under 6%. That is the same pattern we documented on the single-row PH 2.0 part — a fixed loss — and it is worth contrasting with two other series in this catalogue, one of which publishes a fixed 0.10 kgf loss and another whose loss grows with circuit count. Four series, and the loss behaviour is not the same on all of them, which is why the column is worth reading rather than assuming.

The finding that matters most: dual row costs no insertion force

Here is the comparison that only becomes visible because the single-row and dual-row 2.0mm parts sit in the same catalogue and publish the same shape of table.

Single-row, 2.00mm (the KR2001, JST PH 2.0 equivalent): insertion force = 1.5 + 0.50 × (circuits); initial withdrawal force = 0.30 + 0.10 × (circuits); loss fixed 0.20 kgf.

Dual-row, 2.00mm (the KR2005, this part): insertion force = 1.50 + 0.50 × (circuits) up to 16 circuits; initial withdrawal force = 0.60 + 0.10 × (circuits); loss fixed 0.20 kgf.

Lay them side by side at the circuit counts both parts offer:

Total circuits Single-row insertion Dual-row insertion Single-row withdrawal Dual-row withdrawal
4 3.50 3.50 0.70 1.00
6 4.50 4.50 0.80 1.10
8 5.50 5.50 0.90 1.20
10 6.50 6.50 1.00 1.30
12 7.50 7.50 1.10 1.40
14 8.50 8.50 1.20 1.50
16 9.50 9.50 1.30 1.60

Two results, both exact.

The insertion forces are identical, circuit for circuit, all the way to 16 circuits. Same slope, same intercept, same published values — 3.50 kgf at 4 circuits, 9.50 kgf at 16. The intuition that doubling the number of contact rows doubles the force an operator has to apply is wrong on this family, and it is wrong by a large margin because the two laws are literally the same equation.

The withdrawal force is exactly 0.30 kgf higher on the dual-row part, at every circuit count — and because both parts lose the same fixed 0.20 kgf over their rated life, that 0.30 kgf advantage is still 0.30 kgf at cycle 30. A 16-circuit dual-row part holds at 2.00 kgf after 30 cycles where the single-row part holds at 1.70.

So the architectural trade on this pitch is: half the board length (as the previous section quantified), +0.30 kgf of retention, and no additional insertion force at all up to 16 circuits. Above 16 circuits the dual-row part halves its slope and becomes progressively easier than a single-row part of the same size would be — though there is no single-row part to compare against, because the single-row series stops at 16.

One caution, and it is the same one that applies whenever two published tables line up this well. These are two different connector systems — different housings, different contacts, different headers — and identical force laws are a published-data observation, not grounds for substituting one for the other. What the equality tells you is that the dual-row part is not harder to assemble, which is the thing a designer usually worries about first.

KR2005 housing

KR2005 housing

KR2005 terminal

KR2005 terminal

Crimp, and a terminal that serves two series

KONNRA publishes a crimp specification across four wire columns:

Crimp parameter 22 AWG 24 AWG 26 AWG 28 AWG
Conductor crimp width (①) 1.35 ± 0.10 1.35 ± 0.10 1.35 ± 0.10 1.35 ± 0.10
Conductor crimp height (①) 0.85 ± 0.05 0.80 ± 0.05 0.73 ± 0.05 0.65 ± 0.05
Insulation crimp width (②) 1.60 Max 1.60 Max 1.60 Max 1.60 Max
Insulation crimp height (②) 1.65 Max 1.60 Max 1.40 Max 1.35 Max
Crimp strength 4.54 kgf min 3.63 kgf min 2.27 kgf min 1.36 kgf min
Stripping length 1.7–2.3mm 1.7–2.3mm 1.7–2.3mm 1.7–2.3mm

The conductor crimp height steps down 0.05mm at 24 and 26 AWG and 0.08mm at 28 AWG — 0.85, 0.80, 0.73, 0.65 — inside a ±0.05mm window. The insulation crimp height is published as a maximum rather than a tolerance band, which is a different convention from the conductor column in the same table: read it as a ceiling the insulation barrel must not close beyond.

The stripping length is a single figure for all four gauges (1.7–2.3mm). That is a shorter window than several other series in this catalogue and sits between the two values we documented on other parts. If you run more than one 2.0mm series on one line, check the stripping length per series rather than assuming it transfers — on one board-in series in this catalogue the 90° and 180° terminals require non-overlapping strip windows.

The 22 AWG column does not belong

Look at the table’s first column and then at the rated wire range:

  • Rated wire range (PS-KR2005-01 §4.0): AWG 24# ~ 28#, insulation O.D. 0.90 to 1.40mm
  • Terminal drawing: applicable wire AWG #24 ~ #28, insulation O.D. 0.9 ~ 1.40mm
  • Crimp table: a 22 AWG column, with a crimp height (0.85 ± 0.05) and a crimp strength (4.54 kgf min)

The crimp table publishes a specification for a wire gauge that the ratings section and the terminal drawing both exclude. The #22 column carries the largest crimp strength in the table, which suggests it was carried over from a sibling series rather than written for this one — and indeed the KR2004 series, a different 2.0mm product in the same catalogue, publishes a crimp table with the same four columns and a rated range that includes AWG #22.

That makes five documented discrepancies on this product — three in the product page’s Overview prose, one in this crimp table, and one in the force table’s 2×20 row. We are listing them rather than picking one to mention because they have three different causes: the Overview was apparently written against a different product, the crimp table against a sibling series, and the force-table row may be a deliberate cap or a slip.

What to do: take the wire range from PS-KR2005-01 §4.0 (AWG #24–28) and from the terminal drawing, both of which agree. Do not crimp to the 22 AWG column without asking us first, because the part is not rated for that gauge in either controlled document.

The terminal is shared with a second series

This is a small piece of catalogue information with a practical use. The KR2005 terminal’s drawing carries the line:

Suitable: KR2005 / KR2014 series Housing

The same terminal part number serves the KR2005 and the KR2014. The KR2014 cross-references JST PA 2.0 — a different JST series in the same 2.0mm pitch. So one crimp contact, one crimp specification and one reel quantity cover two separate connector systems in this catalogue.

Two consequences. First, a shop running both series can consolidate its terminal inventory and its crimp setup — one applicator setting serves both housings, which on a mixed production line is worth more than it sounds. Second, the terminal’s wire range constrains both series: the AWG #24–28 limit and the 0.9–1.40mm insulation window apply to the KR2014 as well, so a change to the terminal affects two products.

KR2005 DIP 180° wafer

KR2005 DIP 180° wafer

Process and board layout

Board geometry

KONNRA’s drawings publish the layout parameters directly:

  • Recommended PCB layout total tolerance: ±0.05mm
  • Board hole: φ0.70
  • Post: SQ 0.50 (0.50mm square)
  • Pitch: 2.00 ± 0.15

And JST adds the orientation note that matters most:

“The PC board layout figure shown is viewed from the connector mounting surface.”

Read that carefully, because it is the opposite of what the same manufacturer specifies on another series in this pitch. JST’s PH datasheet states that its layout is “viewed from the soldering side.” PHD is drawn from the mounting surface; PH is drawn from the soldering side. Two 2.0mm JST series, two conventions — and a footprint released with the wrong mirroring produces a board that only fails once the connectors arrive.

So: confirm the mirroring against the datasheet for the specific series, not against your memory of the pitch. On this cross-reference, KONNRA’s drawings carry the recommended layout tolerance and the hole diameter, and we will confirm the layout orientation for your part number in writing.

Soldering

KONNRA publishes a wave soldering profile at §9.0:

Wave soldering (§9.0)
Peak temperature 250°C max, 3–5 seconds
Time at minimum 217°C 60–150 seconds
Extended band shown in the same profile 60–180 seconds
Pre-heat 150–180°C

The profile is referenced by §7.11, which specifies solder heat resistance for DIP-type products to EIA-364-71B, and the note that follows is the one that governs in practice: “Please check the reflow soldering condition by your own devices beforehand. Because the condition changes by the soldering devices, P.C. boards, and so on.”

No SMT profile is published for this series, and the components offered confirm why: the KR2005’s four components are a housing, a terminal, a right-angle wafer and a straight wafer, and the drawings for both wafers are titled “PHD2.0 DIP 90°” and “PHD2.0 DIP 180°”. The KR2005 as published is a through-hole product.

One documentation wrinkle worth noting. PS-KR2005-01 §3.0 includes rows for an SMT wafer — base material PA9T UL94 V-0, brass contact, solder tab none — even though no SMT wafer part number appears in §2.0, no SMT wafer drawing is published, and no SMT component page exists. Treat the SMT rows as unused boilerplate rather than as an available option, and if you need a surface-mount dual-row 2.0mm connector, ask us rather than ordering from that table.

Packaging

  • Housings: 1,000 pieces per bag — published for all nineteen sizes from 2*2 to 2*20
  • Terminals: 10,000 pieces per reel
  • Cartons in three sizes (L460×W460×H510mm, L500×W500×H305mm, L580×W580×H320mm), selected by order quantity
  • The package specification is marked RoHS compliant and covers the housing and both DIP wafers

Note that the packing table enumerates all nineteen sizes, which is a useful cross-check: it confirms that the nineteen-size range is the production range and not a drawing-only extension. JST’s housing table enumerates fourteen. So on this series, the difference in published ranges is corroborated by both manufacturers’ own packing documentation.

The environmental programme

KONNRA publishes the full programme for the KR2005, with the EIA standard named against each item:

Item Condition Requirement
Durability (§7.1) 30 cycles at no more than 10 cycles/minute (EIA-364-09C) Contact resistance 40mΩ max
Temperature rise (§7.2) Carrying rated current load (EIA-364-70B) 30°C max
Vibration (§7.3) 1.5mm P-P, 10→55→10 Hz in 1 minute, 2 hours per axis in X, Y and Z (EIA-364-28B) No damage; 40mΩ max; discontinuity 1 microsecond max
Mechanical shock (§7.4) 490 m/s² (50g), 3 strokes in each of 6 directions (EIA-364-27B) No damage; 40mΩ max; discontinuity 1 microsecond max
Heat resistance (§7.5) 105 ± 2°C, 96 hours (EIA-364-17B) No damage; 40mΩ max
Cold resistance (§7.6) −40 ± 2°C, 96 hours (EIA-364-59) No damage; 40mΩ max
Humidity (§7.7) 40 ± 2°C, 90–95% RH, 96 hours (EIA-364-31B) No damage; 40mΩ max; must meet §5.3; insulation resistance 100MΩ min
Thermal shock (§7.8) −40°C 30 min → RT 5 min → +105°C 30 min → RT 5 min, 5 cycles (EIA-364-32B) No damage; 40mΩ max
Salt spray (§7.9) 24 hours, 35 ± 2°C, 5 ± 1% NaCl (EIA-364-26B) No damage; 40mΩ max
Solderability (§7.10) 245 ± 5°C, 3 ± 0.5 seconds (EIA-364-52) ≥95% of immersed area free of voids and pin holes
Solder heat resistance (§7.11) DIP products per profile §9.0 (EIA-364-71B) No damage

And JST publishes none of it. The PHD datasheet’s specification set covers current, voltage, temperature range, contact resistance (initial and post-test), insulation resistance, withstanding voltage, applicable wire and applicable board thickness — and stops there. There is no durability figure, no temperature-rise figure, and no vibration, shock, thermal, humidity or salt-spray requirement on the JST side.

So the two documents answer different questions, and you need both:

  • From JST: the mounting height (8.8mm) and depth (5.0mm), the header variant structure, the applicable board thickness — and the three figures our extraction could not recover.
  • From KONNRA: the whole environmental programme above, the force tables, the terminal and pin retention figures, and the crimp specification.

Two figures on the KONNRA side are worth reading twice.

The contact resistance column is a pair, and both members matter. The part is specified at 20mΩ max when new (§5.1) and 40mΩ max after each of the durability, vibration, shock, heat, cold, humidity and thermal-shock exposures. JST publishes the same pair — 20mΩ initial, 40mΩ after environmental tests — which is the agreement discussed earlier and the strongest single piece of evidence that this cross-reference was specified against the original’s test programme.

And the humidity line contains a relaxed figure that is easy to misread. §7.7 requires 40mΩ max contact resistance, no dielectric breakdown, and 100MΩ minimum insulation resistance after 96 hours at 90–95% RH. That 100MΩ is a post-humidity allowance, not the part’s rating — which remains 1,000MΩ minimum under §5.2. Do not carry 100MΩ into a specification as the insulation resistance. It is the same trap that appears on several series in this catalogue, and it is worth naming every time because the number sits in a table next to the word “insulation resistance” and looks like a rating.

On salt spray, the KR2005 is mid-pack. 24 hours at 35 ± 2°C in 5 ± 1% NaCl. Other series in this catalogue publish 8 hours and 48 hours at the same concentration and temperature, so this sits in the middle — adequate for most industrial environments, and short of what a marine or heavy road-salt application would want. If salt exposure applies, raise it.

KR2005 DIP 90° wafer

KR2005 DIP 90° wafer

KR2005 DIP right-angle wafer

KR2005 DIP right-angle wafer

How to identify whether your connector is a JST PHD

The 2.00mm pitch class contains more than fifteen series in KONNRA’s own index, and several of them are dual-row. Work through these in order — the first two questions do most of the work.

1. Count the rows. Two rows of contacts in a single housing. That is the defining feature of the PHD against the single-row PH that shares its pitch — and it is also what separates it from KONNRA’s KR2005 (this part) and any single-row 2.0mm connector you might be holding instead. On a mated pair you can count rows from the wire side: a dual-row housing presents two rows of wire entries, not one.

2. Measure the mated height, and the depth. JST publishes 8.8mm mounting height and 5.0mm depth for the PHD. The single-row PH in the same pitch is 8.0mm high and 4.5mm wide. So a 0.8mm height difference and a 0.5mm cross-pitch difference separate the two families — small enough to need callipers rather than an eyeball, and worth measuring because it is the cheapest way to tell them apart physically.

3. Count the circuits, and check whether the count is even. JST publishes the PHD in even counts only — 8, 10, 12 … 34. A 7-circuit or 9-circuit connector in this pitch is not a JST PHD. This is a fast positive identification: count the positions; if the total is odd, you are looking at something else.

4. Check the count against the two ranges.

  • 8 to 34 circuits and even → inside both the JST range and the KR2005’s
  • 4 or 6 circuits → KR2005 only; no JST PHD exists
  • 36, 38 or 40 circuits → KR2005 only; no JST PHD exists
  • Odd total, or above 40 → neither

5. Read the part numbers. JST’s PHD numbering is distinctive once you know it:

Function Pattern Example
Socket housing PHDR- + circuits + VS PHDR-10VS
Header, top entry B + circuits + B-PHDSS B10B-PHDSS
Header, side entry S + circuits + B-PHDSS S10B-PHDSS
Header, PA66 (non-glass-filled) variant add -B B10B-PHDSS-B
Contact SPHD- + type + T-P0.5 SPHD-002T-P0.5

And note the one exception in the header range: at 8 circuits JST publishes only the glass-filled PA66 header — there is no undefined variant at 8 circuits, while every size from 10 to 34 has both. If a drawing calls for the PA66 non-glass-filled header at 8 circuits, that part does not exist in the published table.

KONNRA’s equivalents build their part numbers from the same pieces: the housing is H20050 + circuit code + insulator code + 01B; the terminal is T20050P + plating + 01A; and the two wafers are C2005VD (180°) and C2005RD (90°).

6. Look at the housing colour if the flame-retardant grade matters. KONNRA publishes the housing in four insulator options, and the grade differs between them:

Code Material Grade
01 PA66 White V-0
03 PA66 White V-2
20 PA66 Red V-0
32 PA66 Red V-2

Two whites and two reds, one V-0 and one V-2 of each. The housing drawing’s material block states PA66 UL 94V-0, which is the default; the ordering code is where the V-2 alternatives live. If your specification requires UL94 V-0, order code 01 or 20 — do not assume the colour tells you. On this series the same colour appears in both grades, which makes it the one case in this catalogue where colour alone is not a reliable check.

7. And if the connector is from the market rather than from a drawing, measure rather than trust the name. The 2.00mm dual-row segment is served by several series from several manufacturers, and the naming overlaps. Pitch, row count, circuit count and mated height together will place it; a catalogue name on its own will not.

Where the KR2005 sits in the 2.00mm class

KONNRA’s own 2.00mm index lists more than fifteen series spanning a 2.5× range in current and a 2.5× range in voltage. The table below uses KONNRA’s published cross-reference positioning, so the entries are the supplier’s own:

KONNRA series Cross-references to Rows Current Voltage Circuits
KR2005 JST PHD 2.0 2 3A 250V undefined–undefined
KR2001 JST PH 2.0 1 2A 100V 2–16
KR2002 IL-S 1 2A 100V 2–16
KR2003 JST SAN 2.0 1 2A 250V 2–16 (board-in)
KR2004 YEONHO YH200 PH 2.0 1 2A 250V 2–16 (with lock)
KR2000 Molex MicroBlade mx2.0 1 2A 125V 2–15
KR2007 Molex mx2.0 1 2A 125V 2–16 (wire-to-wire)
KR2009 Hirose DF3 1 3A 250V 2–15
KR2014 JST PA 2.0 1 3A 250V 2–15
KR2017 Molex DuraClik mx2.0 1 3A 125V 2–14
KR2021 Molex MINI50 3 4A 250V 34
KR2022 JST PAL 2.0 1 3A 250V 2–14
KR2023 JST ULH 2.0 1 5A 100V 2–10

Four observations worth carrying into a design review.

The KR2005 is the only two-row wire-to-board crimp connector in this table. Every other wire-to-board entry is single row, the KR2021 is three rows, and the remaining two are a board-in part and a wire-to-wire part. So on this pitch, if your requirement is “two rows of crimp contacts with a pluggable housing”, the KR2005 is the entry in this catalogue that answers it — and everything else in the table is eliminated on row count before you compare a single electrical parameter.

It is also the highest-current crimp part in the table below the KR2023. At 3A it matches the KR2009, KR2014, KR2017 and KR2022, sits above the 2A block, and sits below the 5A KR2023 and the 4A KR2021. And it reaches 3A at a 250V rating, which the 5A part does not — the KR2023 is rated 100V.

Note that the KR2021 also has a 34-circuit count — the same top count as JST’s PHD — but it is a three-row connector rated at 4A, and it cross-references a different original. A 34-circuit requirement therefore has two answers in this catalogue with different row counts and different current ratings, and the row count is the discriminator.

And the KR2014 shares this part’s terminal. As noted above, the KR2005’s terminal drawing states “Suitable: KR2005/KR2014 series Housing” — so the JST PA 2.0 equivalent and the JST PHD 2.0 equivalent use one contact. A shop running both series shares a crimp setup, a reel and a wire range, which is worth knowing when two designs need the same 2.0mm crimp contact in different housings.

One further note on the dual-row segment of this pitch. KONNRA’s own 2.00mm index also lists a KR2012 series, and KONNRA’s published guide for the PHB2.0 connector describes that product’s equivalent as “a 2.0mm pitch dual-row wire-to-board connector system.” So there appear to be two dual-row 2.0mm wire-to-board systems in this catalogue — this one, cross-referencing JST PHD, and the PHB2.0 family. If you are sourcing a dual-row 2.0mm connector, confirm which system you are being quoted, because the names do not distinguish them and the cross-referenced originals differ.

And the single-row KR2001 pair remains the closest naming collision in the catalogue. The KR2001 is a 1-row, 2A, 100V part cross-referencing JST PH 2.0; the KR2005 is the 2-row, 3A, 250V part cross-referencing JST PHD 2.0. One digit apart in the series number, and the pitch and the circuit-count notation are the only things they share. Order by series number and confirm the row count and the current rating on the line.

Cross-reference checklist: ten things to verify before you commit

Work through these in order. Each corresponds to a specific finding, discrepancy or open item identified in this guide.

# Check Why
1 Take every figure from the specification, not from the page’s Overview The KR2005 page’s Overview states 2A, −25°C to +85°C and “wire-to-wire and wire-to-board”. The specification table, PS-KR2005-01 and all four drawings say 3A, −40°C to +105°C and wire-to-board.
2 Confirm the current rating at your actual wire gauge Both manufacturers publish 3A, but JST qualifies it at AWG #22 and KONNRA at AWG #24. A rating is qualified by its conductor, and the KR2005’s temperature-rise test does not state the gauge it was run at.
3 Check whether your harness uses AWG #22 or #23 The KR2005’s range is AWG #24–28. JST’s PHD reaches #22 through a second contact. #22 is the gauge JST’s own 3A rating is written against, and the KR2005 does not accept it.
4 Measure your wire’s insulation O.D. The window is 0.9 to 1.40mm. JST’s two contacts accept up to 1.5mm. The insulation crimp height is set against that diameter, in a window only ±0.05mm wide.
5 Confirm your circuit count against both ranges 8–34 and even: both parts. 4 or 6 circuits: KR2005 only. 36, 38, 40 circuits: KR2005 only. Odd totals: neither.
6 Account for the 0.10mm wafer difference if your layout is tight The housing matches JST’s exactly at all fourteen overlapping sizes. The wafer’s B dimension is a consistent 0.10mm larger than JST’s header at the same count.
7 If UL94 V-0 is required, order code 01 or 20 The housing is published in four insulator options: 01 White V-0, 03 White V-2, 20 Red V-0, 32 Red V-2. The same colour appears in both grades, so colour alone will not tell you which you have.
8 Check the row-1 / row-2 orientation before the harness is built Both manufacturers mark “Circuit 1” on the drawings because a dual-row connector can be wired mirrored. A mirrored harness passes single-circuit continuity and fails in the field.
9 Do not crimp to the 22 AWG column The crimp table publishes four wire columns including 22 AWG, but the rated range and the terminal drawing both stop at #24. The #22 column is not covered by either controlled document.
10 Ask for the three JST figures we could not recover JST’s withstanding voltage, insulation resistance and applicable board thickness could not be decoded from the datasheet. Do not infer them from another JST series — ask, and we will obtain them.

Items 1, 3 and 9 are the three that most often produce a wrong document or a wrong part. Item 1 is a page-versus-specification contradiction that understates the product; item 3 is a range limit at the gauge the original’s rating depends on; and item 9 is a crimp table column that the part is not rated for.

Frequently asked questions from procurement and engineering

Is the KR2005 a drop-in replacement for JST PHD? On the housing it comes close to a drop-in: the housing matches JST’s undefined A and B dimensions exactly at all fourteen overlapping circuit counts, the pitch and voltage match, and the contact resistance matches on both the initial and the post-environmental figure — the strongest single piece of evidence that this cross-reference was specified against the original’s test programme. It differs on the wire range (no AWG #22 or #23), on the temperature range, on the qualified current gauge, and on the wafer B dimension by 0.10mm. Treat it as a documented cross-reference to be qualified against your drawing, and send us the drawing — we will compare the footprint and the wire-side fit line by line.

What is the actual current rating? 3A AC/DC, qualified at AWG #24 — from PS-KR2005-01 §4.0 and repeated on all four engineering drawings. Not 2A, which is what the product page’s Overview paragraph says. The page’s own specification table says 3A, and that table agrees with the controlled documents on every value we checked.

Does it cover AWG #22? No. The KR2005’s published range is AWG #24 to #28 with insulation 0.9 to 1.40mm, stated identically in §4.0 and on the terminal drawing. JST’s PHD reaches AWG #22 — and AWG #22 is the gauge at which JST qualifies the PHD’s own 3A rating. So if your harness uses #22, the KR2005 does not accept it, and that is a range limit rather than a marginal difference. And note that the KR2005 publishes a crimp specification for a 22 AWG column — that column is not supported by either controlled document; do not use it without asking us.

What is the temperature range? −40°C to +105°C. That is what PS-KR2005-01 §4.0 states, what all four engineering drawings state, and what the page’s own specification table states. The −25°C to +85°C figure in the page’s Overview paragraph is JST’s rating for the original PHD, not the cross-reference’s — the Overview appears to have been written against the original part and never corrected. The claim is backed by KONNRA’s own tests: 105±2°C for 96 hours, −40±2°C for 96 hours, and five cycles of thermal shock between them.

Which circuit counts are available? Nineteen sizes in the KR2005, from undefined (4 circuits) to undefined (40 circuits). JST publishes fourteen sizes: 8 to 34 circuits, even numbers only. All fourteen JST sizes are covered, and five sizes have no JST counterpart — 2*2 and 2*3 below the JST range, and 2*18, 2*19 and 2*20 above it. Those five are extensions rather than substitutions and should be qualified as new parts; the cross-reference claim lives in the fourteen overlapping sizes.

Is it a dual-row connector, and what does that cost me? Yes — two rows, which is the whole point of the series. Measured against JST’s own single-row PH data at 16 circuits, dual row removes 16.0mm of housing length — 53% of the footprint — for 0.8mm of additional height and 0.5mm of additional depth. And on the force side it costs nothing: see the force question below.

How much force does mating take? Insertion force is 1.50 + 0.50 × (circuits) up to 16 circuits — 3.50 kgf at 4 circuits and 9.50 kgf at 16 — after which it rises by 0.25 kgf per circuit to a published maximum of 15.00 kgf at 40 circuits. Two things worth noting. First, that is the same law as the single-row 2.0mm part in this catalogue, so the dual-row architecture adds no insertion force at all up to 16 circuits. Second, the 2×20 row reads 15.00 kgf where the progression demands 15.50 — plan against 15.00 and confirm with us.

How much retention, and how much does it lose? Withdrawal force is 0.60 + 0.10 × (circuits) up to 16 circuits — 1.00 kgf at 4 circuits and 2.20 kgf at 16. That is exactly 0.30 kgf higher than the single-row part at every circuit count, and because both parts lose the same amount over life, the advantage survives the 30 cycles. On loss: the KR2005 loses a fixed 0.20 kgf across its rated life, at all nineteen sizes — 20.0% on a 4-circuit part and 5.9% on a 40-circuit one. Note that this fixed-loss behaviour is not universal across this catalogue; another series publishes a growing loss. Read the column.

Does it have a lock? The published specification does not describe one. The KR2005 is a friction-retention system: the housing engages the shrouded header and holds by friction. Note that the assembly retention force is specified at 1.0 kgf (9.8N) min for the terminal in the housing and 1.0 kgf (9.8N) min for the pin in the wafer, and that the housing drawing carries “Circuit 1” and “Circuit 2” markings but no latch feature. If your specification requires positive locking at 2.00mm in two rows, raise it with us — it is a different architecture and there may be a better answer in the catalogue than this part.

If UL94 V-0 is required, which part number do I order? Insulator code 01 (PA66 White V-0) or 20 (PA66 Red V-0). Codes 03 (White V-2) and 32 (Red V-2) do not satisfy a V-0 requirement. The trap on this series is that the same colour appears in both grades — a white housing can be V-0 or V-2 depending on the code, so check the code, not the colour. The housing drawing’s material block states “PA66 UL 94V-0”, which is the default grade.

What PCB thickness does it suit, and what is the board layout? Neither manufacturer publishes an applicable PCB thickness that we could read — the JST figure is one of the three the datasheet’s font encoding obscured, and the KR2005 specification does not state one. KONNRA’s drawings do publish the layout parameters: a recommended PCB layout total tolerance of ±0.05mm, φ0.70 board holes, SQ 0.50 posts and a 2.00 ± 0.15 pitch. And note the orientation convention: JST’s PHD layout is drawn from the connector mounting surface, while JST’s PH datasheet draws its layout from the soldering side. Confirm the mirroring per series, not per pitch.

What about salt spray? 24 hours at 35 ± 2°C in 5 ± 1% NaCl — mid-pack in this catalogue, where we have documented 8 hours on one series and 48 hours on another. Adequate for most industrial environments; short of what a marine, coastal or heavy road-salt application would want. If salt exposure applies, raise it.

Is a UL or CSA recognised version available? Neither the KR2005 specification nor its product page publishes a UL or CSA file number. Other series in this catalogue do carry a published UL file number, so this is a documentation gap rather than a statement about the part. Ask for the certification status of the specific part numbers and insulator codes you intend to use — and note that the requirement may interact with the UL94 grade, which varies by code.

What are the lead time and MOQ? KONNRA can deliver complete connector set samples within 45 days. Connector production lead time is typically 2–3 weeks, and wiring harness assemblies are quoted separately. Housings are packed 1,000 per bag across all nineteen sizes and terminals 10,000 per reel; MOQ depends on the circuit count and the insulator code — send the specific configuration and it will be quoted against the actual part numbers.

What is the difference between the KR2001 and the KR2005? Row count, current and voltage. The KR2001 cross-references JST PH 2.0 — one row, 2A, 100V, 2–16 circuits. The KR2005 cross-references JST PHD 2.0 — two rows, 3A, 250V, 2*2–2*20. They share a pitch and part of their circuit-count notation and nothing else. One digit apart in the series number — order by number and confirm the row count on the line.

What else is in this pitch if the KR2005 does not fit? See the pitch-class table above. In brief: the KR2001 for a single-row 2A part at 100V; the KR2003 for a board-in design with no wafer at all; the KR2004 for a single-row part with a lock at 250V; the KR2021 for a three-row, 4A requirement; and the KR2023 for 5A. Our other 2.00mm guides cover these in detail — see the JST PH 2.0 connector guide, the YEONHO PH 2.0 connector guide, the JST SAN 2.0 board-in connector guide and the Molex MicroBlade 2.0 connector guide.

Start your cross-reference check

Send us the four things below and we will come back with a specific answer rather than a catalogue page — including, if you send the drawing, a footprint comparison against the PHD part you are replacing:

  • Your wire gauge and measured insulation O.D. — we will check it against the KR2005’s AWG #24–28 range and 0.9–1.40mm window, and tell you plainly if it falls outside. If your harness is AWG #22 or #23, that is the first thing to raise, because JST’s own 3A rating is established at #22.
  • Your circuit count — and whether it sits in the fourteen sizes both manufacturers publish, or in the five the KR2005 adds
  • Your board: thickness and the existing PHD footprint or drawing. Remember that JST draws the PHD layout from the mounting surface
  • Whether UL94 V-0 is required — because on this series that decides the insulator code, and the colour does not

From that we can confirm the housing, terminal and wafer part numbers including the insulator code, the applicable board thickness, the layout orientation, the crimp specification, and — for the three JST figures our extraction could not recover — written values taken from JST’s documentation rather than inferred from another series.

Contact KONNRA Electronics

  • Phone: (86)-769-85449875
  • Email: info@konnra.com
  • Address: No.6 Nanchang South Road, Chijiao, Wangniudun, Dongguan, Guangdong, China
  • Contact us

Orderable components: KR2005 Right Angle Wafer · KR2005 Straight Wafer · KR2005 Housing · KR2005 Terminal

➡️ Explore the full 2.0mm pitch range · Wire-to-Board connector category · JST connector cross-reference: 20+ series

Sources and method

This guide compares the original manufacturer’s published documentation with KONNRA’s own published documentation for the cross-reference part. Where the two disagree — and where KONNRA’s own documents disagree with each other — both figures are shown and the discrepancy is reported rather than resolved by preference.

Original manufacturer (JST) — PHD series:

  • JST PHD connector datasheet (ePHD.pdf), JST product documentation. Used for: the series description (“This is a 2.0 mm pitch dual-row wire-to-board connector”, with “a mounting height of 8.8 mm and a depth of 5 mm” and a “low-profile, space-saving design”); the feature list including “Boxed-shaped shrouded header”; current rating 3A AC/DC (AWG #22); voltage rating 250V AC/DC; temperature range −25°C to +85°C including temperature rise under current; contact resistance — initial value 20mΩ max, and 40mΩ max after environmental tests; the standard-registration note pointing to JST’s “List of Registered Overseas Standards” and the warning that “specifications registered to overseas standards may differ from the general specifications listed above”; RoHS2 compliance; the board layout note (“The PC board layout figure shown is viewed from the connector mounting surface”); the contact table (SPHD-002T-P0.5 — AWG #28–24, 0.08–0.21mm², insulation 0.9–1.5mm, 8,000/reel; SPHD-001T-P0.5 — AWG #26–22, 0.13–0.33mm², insulation 1.0–1.5mm; material phosphor bronze, tin-plated); the crimping machine table (AP-K2N, MKS-L-10, APLMK SPHD002-05, APLMK SPHD001-05); the socket housing table (PHDR-08VS through PHDR-34VS, fourteen sizes, A 6.0–32.0mm, B 9.9–35.9mm, 1,000/bag); the header tables for top entry (B8B-PHDSS through B34B-PHDSS) and side entry (S8B-PHDSS through S34B-PHDSS), including the two material variants (PA66 glass-filled as the plain number and PA66 as the -B suffix, with no undefined variant at 8 circuits), the quantities per box, and the materials (post: copper alloy, copper-undercoated, tin-plated; wafer: PA 66 glass-filled natural ivory / PA 66 natural white); the (LF)(SN) labelling note; and the model-number allocation including the housing colour codes (S natural white, K black, E blue, R red, Y yellow) and the header type codes (B top entry, S side entry).
  • JST PHD product page (jst-mfg.com/product/detail_e.php?series=201) and JST distributor datasheets for the same series, used as independent confirmation of the mounting height of 8.8mm and depth of 5.0mm.
  • Figures NOT recovered from the JST datasheet: the applicable PC board thickness, the insulation resistance and the withstanding voltage are rendered through an embedded font subset that our extraction could not decode. They are reported as unrecoverable rather than inferred from another JST series.

Cross-reference manufacturer (KONNRA) — KR2005 series:

  • Product specification PS-KR2005-01, Edition A1, issued and revised 2022/2/26, Engineering Dept., Dongguan Konnra Electronics Co., Ltd, seven pages, titled “2.0mm Pitch KR2005 Series Connector wire to board Specification.” Used for: §2.0 the part-number table (housing H200502****01B; terminal T20050P***01A; wafers C2005VD********01PC and C2005RD********01PC); §3.0 materials and surface treatment (PA66 UL94 V-0 housing; phosphor bronze, tin/gold plated over nickel terminal; DIP wafer base PA66 UL94 V-0 with brass contact and “solder tab: None”; the SMT wafer rows that appear here but have no corresponding part number, drawing or component page); §4.0 ratings (250V, 3A(24AWG), −40°C ~ +105°C, AWG 24#–28# with insulation O.D. 0.90 to 1.40mm); §5.1 contact resistance 20mΩ max by dry circuit at 20mV / 100mA to EIA-364-23C; §5.2 insulation resistance 1000MΩ min at 500V DC for one minute to EIA-364-21B; §5.3 dielectric strength 800V AC for one minute to EIA-364-20A; §6.1 durability at 25.4±3mm/minute “excluding plastic detents” to EIA-364-13D; §6.2 terminal insertion force 1.0 kgf (9.8N) max; §6.3 terminal/housing retention 1.0 kgf (9.8N) min; §6.4 pin retention 1.0 kgf (9.8N) min; §6.5 the crimp specification across four wire columns including the 22 AWG column that the ratings section excludes, with the crimp widths, heights, strengths (4.54 / 3.63 / 2.27 / 1.36 kgf min) and stripping length (1.7–2.3mm); §7.1–7.11 the environmental programme including durability (30 cycles), temperature rise (30°C max), vibration, shock, heat, cold, humidity (40±2°C, 100 megohms min after), thermal shock, salt spray (24 hours), solderability and solder resistance; §8.0 the insertion and withdrawal force table for undefined to undefined, initial and at 30 cycles; §9.0 the wave soldering profile; and §10.0 the remark.
  • Engineering drawings, KR2005 series — four drawings in the series drawing file: 2005H201-B-S Rev A1 (housing, “PHD2.0 Housing”, PA66 UL94 V-0, ordering code H20050*** **01B with circuit codes 202:2×2 and 215:2×15, insulator codes 01 PA66 White V0, 03 PA66 White V2, 20 PA66 Red V0, 32 PA66 Red V2, and the dimension table for all nineteen sizes); 2005T01-A-S Rev A3 (terminal, “PHD/PA2.0 Terminal”, phosphor bronze, tin over nickel, applicable wire AWG#24~#28, insulation 0.9~1.40mm, “Suitable: KR2005/KR2014 series Housing”, 10,000 pcs per reel, plating codes S00 unplated / T01 bright tin / B04 Au 5u” / B08 Au 2u”); 2005WRD201-C-S Rev A1 (DIP 90° wafer, “PHD2.0 DIP 90°”, PA66 UL94 V-0, brass contact, ordering code C2005RD*** 22 T01 01PC); and 2005WVD201-C-S Rev A1 (DIP 180° wafer, “PHD2.0 DIP 180°”, ordering code C2005VD*** 22 T01 01PC). Used for the specification blocks (3A, 250V, −40~+105°C, 1000MΩ/min, 800V AC/minute, 20mΩ/max), the material and plating blocks, the dimension tables for both the housing and the wafers, the insulator colour and grade codes, the recommended PCB layout total tolerance of ±0.05mm, the φ0.70 hole and SQ 0.50 post, and the general tolerance block (X.X ±0.30 / X.XX ±0.20 / X.XXX ±0.10 / angle ±2°).
  • Package specification, drawing number 2005H101-A-P (housing packing, “PHD2.0 HousingPacking”) and 2005WND101-A-P (“PHD2.0 DIP WFSeries Packing”), Rev A1, marked RoHS compliant. Used for: 1,000 pieces per bag across all nineteen circuit counts; the three carton sizes; and the packing notes.
  • KR2005 product page and its four component pages (Right Angle Wafer, Straight Wafer, Housing, Terminal). Used for: the page specification table (pitch 2.00mm, circuits 2*2–2*20pin, current 3A, voltage 250V); the General Specifaction table (materials, insulation O.D. 0.9 to 1.4mm, withstanding 800V AC/minute, temperature −40℃～+105℃, contact resistance 20mΩ max, insulation resistance 1000MΩ min, plating tin over nickel); the Overview paragraph — which states 2 A, −25°C to +85°C and “wire-to-wire and wire-to-board setups”, each of which is contradicted by the page’s own specification table and by PS-KR2005-01; the Advantages section; the component and document links; and the image set.
  • KONNRA 2.0mm pitch index page. Used for the cross-reference positioning of the sibling 2.00mm series (KR2000, KR2001, KR2002, KR2003, KR2004, KR2007, KR2009, KR2013, KR2014, KR2017, KR2021, KR2022, KR2023, KR2026, KR2028) in the pitch-class comparison table, for the KR2021 entry as a three-row, 4A part at 34 circuits, for the KR2013 dual-row pin header entries, and for the presence of a KR2012 series in the same pitch.

Not published in any source reviewed: an applicable PCB thickness for the KR2005, a UL or CSA file number for the KR2005, an SMT wafer part number or drawing for the KR2005, the wire gauge used for KONNRA’s temperature-rise test, and — on the JST side — the applicable PC board thickness, insulation resistance, withstanding voltage, durability, temperature rise and the entire environmental test programme.

Five internal discrepancies are reported rather than resolved. Three are in the KR2005 product page Overview: it states 2 A where the specification table, PS-KR2005-01 §4.0 and all four drawings state 3A; it states −25°C to +85°C where the same documents state −40°C to +105°C (and where −25/+85 is JST’s rating for the original); and it states “wire-to-wire and wire-to-board” where the product is wire-to-board and its four components include no wire-to-wire part. A fourth is in the crimp specification, which publishes a 22 AWG column while the rated wire range and the terminal drawing both stop at #24. A fifth is in the force table, where the 2×20 row’s insertion force reads 15.00 kgf while the column’s own progression demands 15.50 and every other row obeys its regime without exception.

Method note. The force table was analysed as a sequence rather than as isolated values, which is how the two regimes were identified: insertion force rises by exactly 1.00 kgf per row pair from undefined to undefined, then by exactly 0.50 per row pair to undefined, and initial withdrawal force rises by exactly 0.20 per row pair then exactly 0.10 — with the sole exception of the 2×20 insertion row noted above. In per-circuit terms those become insertion force = 1.50 + 0.50 × (circuits) and initial withdrawal force = 0.60 + 0.10 × (circuits), both valid to 16 circuits. The post-30-cycle withdrawal column was then differenced against the initial column and found to be exactly 0.20 kgf lower at all nineteen position counts. The single-row 2.00mm force laws were then set against these, producing an exact equality of insertion force at every common circuit count to 16 and a constant +0.30 kgf withdrawal difference, both reported as published-data observations with an explicit caution against substituting one connector system for the other on that basis. Dimensional tables for both manufacturers were transcribed and compared position by position, which is how the exact A-and-B match across all fourteen overlapping housing sizes and the consistent +0.10mm wafer B difference were established. The two header material variants, the absence of an -B variant at 8 circuits, the four housing insulator codes and their V-0/V-2 split, and the terminal’s shared applicability to the KR2014 series were all read directly from the JST and KONNRA tables rather than inferred.