Hirose DF13 Connector Complete Guide: Specs, Pin Counts, the DF12 Mix-Up & the KONNRA KR1256 Equivalent

Quick answer: The Hirose DF13 is a 1.25mm pitch miniature crimping connector — a wire-to-board family sold under Hirose’s SignalBee™ brand, offered in one or two rows, with positions listed as 2 through 15 plus 20, 30 and 40. It is rated 150V AC and 150V DC, carries a rated current of 1.0A and 2.5A across the series, is rated for 30 or 50 mating/unmating cycles depending on variant, and operates from −35°C to +85°C. Hirose lists the connector types as header, socket and contact, with crimping as the wire termination method for discrete wire. Documented contact finishes are gold and tin, at plating thicknesses of 0.2μm, 0.76μm and 1.0μm. The KONNRA KR1256 series is documented as its cross-reference equivalent, covering 2–15 positions in single row and 2×5 to 2×20 positions in dual row at 1.25mm pitch, in DIP and SMT wafers with single-row and dual-row housings and a crimp terminal. If your note says “DF12” but describes a 1.25mm wire-to-board crimp connector, you almost certainly mean the DF13 — see the next section.

At a glance

Manufacturer of the original	Hirose Electric Co., Ltd. — not JST, not Molex
Series	DF13 (Hirose SignalBee™ range)
Pitch	1.25mm
Configuration	Wire-to-board crimp — header, socket and contact
Rows	1 or 2
Positions	2–15, plus 20, 30, 40 in the series listing
Voltage rating	150V (Hirose documents AC 150.0V and DC 150.0V)
Current rating	1.0A and 2.5A across the series
Operating temperature	−35°C to +85°C
Connector heights	3.4mm to 5.4mm across the series
Mating / unmating cycles	30 or 50, depending on variant
Wire termination	Crimping, discrete wire
Safety standard	UL
Typical use	Board-to-wire signal and low-current links inside compact equipment
KONNRA equivalent	KR1256 (2–15 single row; 2×5 to 2×20 dual row, 1.25mm pitch)

The DF13 sits in the busiest corner of the connector market: 1.25mm pitch wire-to-board, where a dozen families from Hirose, JST, Molex and their second sources all look alike on a bench and none of them mate with each other. That is why the questions engineers and buyers actually ask about this series are narrow and practical — how many positions, one row or two, which wafer orientation, which wire, and whether a documented second source exists.

This guide answers those with every figure traced to Hirose’s or KONNRA’s own published documentation, and it flags the places where the two documents disagree instead of averaging them.

What this guide covers:

• DF13 or DF12? — the naming mix-up, and how to settle it in thirty seconds (the section most people arrive for)
• What the DF13 actually is, and what it is not
• A glossary, because the DF13 uses different words than the DF19 and DF14
• Hirose DF13 and KONNRA KR1256 specifications, side by side
• Part number cross-reference and how to read a DF13 number
• DF13 against the other Hirose series in and around its pitch class
• The specification differences to verify before you sign off a cross-reference
• Design and use notes for a 1.25mm crimp interface
• Components and configuration options on the KONNRA side
• Applications, cable assembly options, and the procurement questions that decide a second source
• A checklist of what to send us, and a pre-release checklist for the drawing

DF13 or DF12? Getting the series right first

This is the single most common error on this series, and it is worth thirty seconds because everything downstream depends on it.

The DF13 is a 1.25mm pitch wire-to-board crimping connector. The DF12 is a different Hirose series designation. They are not the same family, they do not share a mating interface, and a drawing or a purchase order that says “DF12” while describing a 1.25mm crimp wire-to-board connector has the wrong series written on it.

The mix-up is not carelessness. It happens for three reasons:

1. The designations are one digit apart and both belong to Hirose’s “DF” numbering block. DF12, DF13, DF14, DF19 and DF20 all sit inside the same block, and the numbers were issued as the series were developed rather than as a mnemonic system.
2. The two names travel together in the same documents. Hirose’s own catalogue and distributor listings interleave the DF series, so a quick search for “DF12” returns DF13 material and vice versa, and the wrong digit gets copied into a BOM.
3. The DF13 is very often the part someone is actually holding. It is one of the highest-volume 1.25mm crimp families in the world, so when a drawing says DF12 and the physical part is a 1.25mm crimp connector, DF13 is the usual intended answer.

How to settle it in thirty seconds, without documentation:

Check	What it tells you
Measure the contact pitch — centre-to-centre between adjacent contacts	A 1.25mm pitch points at the DF13 class. Any pitch other than 1.25mm rules the DF13 out entirely
Count the rows	The DF13 is offered in 1 or 2 rows. A single-row 1.25mm crimp family in this block is also DF13 territory
Count the positions	The DF13 series listing covers 2–15 plus 20, 30 and 40. A position count outside that set needs the original series page opened, not a guess
Look at the mating half	A DF13 header on the board takes a socket housing with a crimped contact. If the mating half is a flat cable, a board-to-board stack, or a different pitch, it is a different series
Read the marking or the reel label	The full part number is the only thing that identifies a series with certainty

Rule of thumb: at 1.25mm and 1.0mm pitch, cross-reference on the part number, never on the pitch or the appearance. DF12, DF13, DF14, DF19, DF20, DF50, JST GH, JST SH and Molex PicoBlade all live within a fraction of a millimetre of each other, and none of them mate with any other.

What this guide does with DF12. Every figure in this guide is taken from the Hirose DF13 series documentation and from KONNRA’s KR1256 documentation. Where a DF12 figure would be required, it is marked Not documented and left for you to confirm on Hirose’s DF12 series page rather than quoted from memory. That is deliberate: on a cross-reference question the cost of a wrong number is a scrapped board, not a corrected sentence.

One more naming trap, and it is inside the DF13 itself. The DF13 does not use the words “receptacle” and “plug”. Hirose lists its connector types as header, socket and contact. The header is the board-mounted half, the socket is the cable-side housing, and the contact is the crimp terminal that goes inside the socket. If you come to the DF13 from the DF19 or JST SH world expecting “receptacle” and “plug”, you will mis-map the halves. See the glossary below.

What Is the Hirose DF13 Connector?

The DF13 is a 1.25mm pitch miniature crimping connector for wire-to-board connections, positioned by Hirose inside its SignalBee™ range of signal connectors. Hirose’s own summary of the series is short and functional: compact size, multi-contact, pick-and-place mounting, basic functionality at a small size, and UL certification.

It is a crimp family, and that word carries most of the engineering. The board-mounted half is a header — a wafer that is either a straight-through (THT) or surface-mount (SMT) part, in straight or right-angle orientation. The cable-side half is a socket housing that receives a crimped contact on a discrete wire. There is no insulation-displacement path and no flat-cable path: the DF13 terminates discrete wire only and does so by crimping.

Key characteristics, as documented by Hirose:

• 1.25mm contact pitch, 1.25mm mounting pitch — the same figure for both
• One or two rows — the series page lists the number of rows (interface) as 1 and 2
• Multi-contact — positions listed as 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 20, 30, 40
• Rated current of 1.0A and 2.5A across the series
• Rated voltage of 150V — Hirose documents AC 150.0V and DC 150.0V
• Both SMT and THT mounting — the series page lists mounting styles as SMT and THT
• Straight and right-angle orientations
• Standard on-board mounting side, with soldering as the PCB stabilising feature
• Pick-and-place compatible — Hirose lists automatic mounting as a series feature, and states there is no staggered lead
• Compact envelope — documented connector heights across the series run 3.4mm, 3.6mm, 4.0mm, 4.3mm, 4.8mm, 5.0mm and 5.4mm; widths run 3.2mm to 5.5mm; lengths run 4.15mm to 30.85mm
• 30 or 50 mating/unmating cycles, depending on variant
• Gold or tin contact plating, at 0.2μm, 0.76μm or 1.0μm plating thickness
• Beige housing, colour as documented
• Recommended wire type: discrete wire, with recommended wire sizes spanning AWG 26 to AWG 32
• UL as the safety standard
• Operating temperature −35°C to +85°C

Figure 1 — KONNRA KR1256 series: 1.25mm pitch connector for the Hirose DF13 interface

➡️ View the KONNRA KR1256 Hirose DF13 Equivalent

A short glossary, because the DF13 uses different words than the DF19

• Header — the board-mounted half of a DF13 pair. Header part numbers carry a P. Hirose lists headers in both SMT and THT mounting, in straight and right-angle orientation.
• Socket — the cable-side housing. Socket part numbers carry an S. The socket receives crimped contacts. This is the half the DF19 calls a “plug” and the JST SH world calls a “housing”.
• Contact — the crimp terminal. Hirose lists it as its own connector type alongside header and socket, which is the tell that this is a crimp family: the terminal is a separately ordered line item, not a pre-fitted part.
• Wafer — KONNRA’s word for the board-mounted half. A KONNRA “wafer” maps to a Hirose DF13 header.
• Discrete wire — ordinary insulated hook-up wire, stripped, crimped into a contact and inserted into a socket. This is the only wire type the DF13 series recommends.
• Pitch — centre-to-centre distance between adjacent contacts. The DF13 is 1.25mm on both contact pitch and mounting pitch.
• Crimping — the termination method: the contact is deformed around the conductor and the insulation by a tool, rather than soldered or insulation-displaced. Crimp quality is a function of the tool and the wire, which is why tooling is part of the specification on this family.
• THT / DIP — through-hole technology. The header pins pass through the board and are soldered on the far side. KONNRA uses the term DIP for the same thing.
• SMT — surface-mount technology. The header is reflowed onto pads on the board surface.
• Right angle / straight — the direction the mating axis points relative to the board. A straight header mates vertically, with the cable leaving perpendicular to the board; a right-angle header mates parallel to the board, with the cable leaving along the board surface.

Hirose DF13 and KONNRA KR1256 Specifications

Parameter	Hirose DF13 (Hirose documentation)	KONNRA KR1256 (KONNRA documentation)
Series positioning	SignalBee™ 1.25mm pitch miniature crimping connector, UL certified	1.25mm pitch miniature crimp connector for the Hirose DF13 interface
Connector types	Header, Socket, Contact	Wafer (DIP and SMT), Housing (single row and dual row), Terminal
Contact pitch	1.25mm	1.25mm
Mounting pitch	1.25mm	Not documented
Number of rows	1, 2	1 or 2
Positions	2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 20, 30, 40	2–15 (single row); 2×5 to 2×20 (dual row)
Rated current	1.0A and 2.5A across the series	1A
Rated voltage	AC 150.0V and DC 150.0V	150V
Operating temperature	−35°C to +85°C	−40°C to +105°C
Connector height	3.4, 3.6, 4.0, 4.3, 4.8, 5.0, 5.4mm across the series	Not documented
Connector width	3.2, 3.4, 3.6, 4.3, 4.8, 5.0, 5.2, 5.5mm across the series	Not documented
Connector length	4.15mm to 30.85mm across the series	Not documented
Mounting style	SMT, THT	SMT and DIP
Connector orientation	Straight, Right angle	Straight and right angle
Mounting side	Standard on-board	Not documented
PCB stabilising feature	Soldering	Not documented
Staggered lead	No	Not documented
Mating / unmating cycles	30 or 50	Not documented
Contact plating	Gold, Tin	Gold flash / Tin over Nickel
Plating thickness	0.2μm, 0.76μm, 1.0μm	Not documented
Housing colour	Beige	Not documented
Wire termination method	Crimping	Crimping
Recommended wire type	Discrete wire	Not documented
Recommended wire size	AWG 26 to AWG 32 across the series (the series page lists minimum recommended sizes of AWG 30 and AWG 32 against maximum recommended sizes of AWG 26 and AWG 30)	Not documented
Applicable insulation O.D.	Not documented in the series data reviewed	1.0mm max
Withstanding voltage	Not documented in the series data reviewed	500V AC / minute
Contact resistance	Not documented in the series data reviewed	30mΩ max
Insulation resistance	Not documented in the series data reviewed	500MΩ min
Materials	Contact material documented as tin plated or gold plated	PA66 / PA6T / UL94 / Phosphor Bronze / Brass
Flammability rating	Not documented in the series data reviewed	UL94
Safety standard	UL	UL compliance stated
RoHS	Not documented in the series data reviewed	RoHS compliance stated

“—” and Not documented mean the parameter is not stated in the manufacturer documentation reviewed for this guide. Confirm any blank against the current Hirose DF13 specification sheet and the KR1256 product specification before releasing a drawing.

A note on the two “current rating” rows, because this is the row engineers misread first. Hirose’s DF13 series page lists a rated current of 1.0A and 2.5A — both figures belong to the series, and which one applies depends on the specific part. Hirose’s part page for undefined, a 2-position socket housing, lists a rated current of 2.5A, with a connector length of 4.15mm, a width of 3.2mm and a height of 4.0mm. KONNRA documents the KR1256 at 1A. Neither figure is “wrong”: they are published against different part numbers, and the safe reading is that 1A is the figure you can rely on across the KONNRA range, while 2.5A exists on the Hirose side for specific low-position parts. If your design needs more than 1A, that has to be confirmed against the specific Hirose part number before the cross-reference is settled — see the difference list below.

Hirose DF13 Part Number Cross-Reference

Hirose DF13 component	Hirose part number form	KONNRA equivalent
Socket, discrete wire (cable side)	DF13-□S-1.25C — confirmed example: DF13-2S-1.25C	KR1256 single-row housing / dual-row housing + KR1256 terminal
Socket, dual row	DF13-□S-1.25C in the dual-row position counts	KR1256 dual-row housing + KR1256 terminal
Header, straight, through-hole	DF13-□P-1.25DSA form — confirm exact suffix against the Hirose series page	KR1256 DIP single-row straight wafer
Header, right angle, through-hole	DF13-□P-1.25DSA right-angle variant — confirm exact suffix	KR1256 DIP single-row right-angle wafer
Header, straight, SMT	DF13-□P-1.25DS form — confirm exact suffix	KR1256 SMT single-row straight wafer
Header, right angle, SMT	Confirm exact suffix	KR1256 SMT single-row right-angle wafer
Header, dual row, straight, SMT	Confirm exact suffix	KR1256 SMT dual-row straight wafer
Crimp contact (terminal)	Hirose lists Contact as a distinct connector type in the series	KR1256 terminal

Read this table the way it is written. The KONNRA column is drawn from KONNRA’s own component list for the KR1256 series, which is complete and published. The Hirose column gives the part number structure and one confirmed example part number; where a suffix is marked “confirm”, the safest route is to send us the full original part number rather than reconstruct it from the pattern. On this series a wrong suffix is a wrong footprint, and a wrong footprint is a scrapped board.

How to read a DF13 part number

DF13 - 2 S - 1.25 C

Field	Meaning
DF13	Series name
2	Number of positions — the series listing covers 2–15 plus 20, 30, 40
S	Socket — the cable-side housing. A P in this position denotes a header, the board-mounted half
1.25	Contact pitch, 1.25mm
C	Crimp termination, for discrete wire

What is documented and what is not. Hirose’s series page lists the connector types (header, socket, contact), the mounting styles (SMT, THT), the orientation (straight, right angle), and the full position list, so those field meanings follow directly from the documentation. The suffix that distinguishes a straight header from a right-angle one, and an SMT header from a THT one, is not documented in the series data reviewed for this guide — it lives in the individual part numbers and the series catalogue. Confirm it against the catalogue before you commit a footprint.

One trap in this numbering: the DF13 and the DF19 use different vocabulary for the same two halves. On a DF19 the board half is a receptacle (P) and the cable half is a plug (S). On a DF13 the board half is a header (P) and the cable half is a socket (S). The letters happen to agree on which half is which, but the words do not, and a harness drawing that says “plug” on a DF13 build will be read as a socket by one person and as something else by the next.

Positions: what each side actually offers

	Single row	Dual row
Hirose DF13	2 through 15	20, 30, 40 listed in the series position set
KONNRA KR1256	2 through 15	2×5 through 2×20 (a continuous range of per-row counts)

Read that table carefully, because the two columns are not describing the same thing. Hirose’s series page publishes a flat position set — 2 through 15, then 20, 30 and 40 — without stating which of those counts are single row and which are dual row. KONNRA publishes a range: 2–15 positions in single row, and 2×5 to 2×20 positions in dual row, which describes a continuous span of per-row counts rather than three discrete values.

On the dual-row side the two descriptions are not equivalent. A 2×10 dual-row socket is 20 circuits, which corresponds to Hirose’s 20; 2×15 corresponds to 30; 2×20 corresponds to 40. But a continuous 2×5 to 2×20 range also implies intermediate configurations — 2×6, 2×7, 2×8 and so on — which do not appear in the Hirose series position set. If your build calls for an intermediate dual-row count, confirm availability in writing rather than assuming a continuous range on either side.

DF13 vs the Other Hirose Series in Its Pitch Class

“1.25mm pitch” does not identify a connector, and neither does “DF”. The table below separates the series that get confused with each other, using each series’ own published data.

Series	Pitch	Positions	Rows	Max current	KONNRA equivalent
DF13	1.25mm	2–15, plus 20, 30, 40	1, 2	1.0A / 2.5A	KR1256
DF12	Not documented in the material reviewed — confirm on Hirose’s DF12 series page	Not documented	Not documented	Not documented	Not documented
DF14	1.25mm	Single row 2–10, 15, 20, 25, 30 (as published in KONNRA’s Hirose DF19 guide, drawn from Hirose series data)	1	1.0A	KR1255; KR1258 = DF14 with lock
DF19	1.0mm	Single row 8, 14, 20, 30	1	0.5A to 1.0A by wire gauge	KR1002
DF20	1.0mm	Double row 10, 20, 30, 40, 50	2	0.3A to 1.0A by gauge	Not documented
DF50	1.0mm	Single row 2–16; double row 20, 30, 40, 50	1, 2	1.0A	Not documented

What this table shows.

• DF13 and DF14 share a pitch and differ in purpose. Both are 1.25mm, and they are not the same interface. In KONNRA’s cross-reference range the DF13 is KR1256, the DF14 is KR1255, and the DF14 with a lock is KR1258 — three separate part families, three separate mating geometries.
• The DF19 is a different pitch class entirely. At 1.0mm it will not mate with anything at 1.25mm, and it is built around a three-way interface — crimped wire, FPC or micro-coaxial cable — that the DF13 does not have. If your design is an LVDS display link, the DF19 is the candidate; if it is a general wire-to-board signal link, the DF13 class is.
• DF20 and DF50 are also 1.0mm, and are included here only because they are the other names that come up in the same search. Neither is a 1.25mm part.
• DF12 is the one row in this table that is deliberately blank. This guide’s figures come from DF13 documentation. Quoting a DF12 figure from anywhere else would break the single rule this guide is built on, so it is left for confirmation.
• Only the DF13 row carries a 2.5A figure. That is the series-level rating on the Hirose side; the 1.25mm family above and below it are documented at 1.0A. It is also the figure that has to be reconciled before a 1A-rated cross-reference is signed off.

➡️ Explore the full 1.25mm pitch range · HIROSE alternatives connector range

Specification Differences to Verify Before You Cross-Reference

Ten points deserve attention before you sign off a DF13 cross-reference. Every one of them is a place where the two documents do not say the same thing — or where one of them says nothing at all.

1. The rated current is a dual figure on the Hirose side and a single figure on the KONNRA side. Hirose’s DF13 series page lists 1.0A and 2.5A; Hirose’s part page for DF13-2S-1.25C lists 2.5A. KONNRA documents the KR1256 at 1A. If your application draws more than 1A, this is the first thing to settle, and it has to be settled against your specific position count and part number, not against the series headline. Source: Hirose DF13 series page and Hirose part page for DF13-2S-1.25C; KONNRA KR1256 main product page.

1. Position counts are described as a set on one side and a range on the other. Hirose publishes 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 20, 30, 40. KONNRA publishes 2–15 single row and 2×5 to 2×20 dual row. The single-row spans are equivalent. The dual-row descriptions are not equivalent: KONNRA’s range implies intermediate per-row counts that Hirose’s set does not list. Confirm the exact count you need. Source: both series pages.

1. Contact plating is described differently and neither side states a thickness on the KONNRA side. Hirose documents gold or tin plating at 0.2μm, 0.76μm or 1.0μm. KONNRA documents gold flash / Tin over Nickel with no thickness figure. Gold flash is a thin gold deposit, and Hirose’s thinnest documented option is 0.2μm — so the two descriptions are not interchangeable and cannot be compared without a number from KONNRA. Ask for the plating thickness in microns if contact finish is part of your qualification. Source: Hirose DF13 series page; KONNRA KR1256 main product page.

1. Operating temperature: the KONNRA range is 20°C wider at the top and 5°C wider at the bottom. Hirose specifies −35°C to +85°C. KONNRA specifies −40°C to +105°C. If your application genuinely relies on operation above +85°C, request the test data behind the KONNRA figure rather than accepting the headline range — a wider declared range on a second source is normal, but the qualification evidence behind it is what your design review will be asked for. Source: Hirose DF13 series page; KONNRA KR1256 main product page.

1. Rated voltage: the two sides agree. Both publish 150V — Hirose as AC 150.0V and DC 150.0V, KONNRA as 150V. This one is consistent, with a single presentational difference: KONNRA’s figure carries no AC/DC qualifier, while Hirose publishes both. If your design depends on the DC rating specifically, take the DC figure from the Hirose side. Source: both series pages.

1. Withstanding voltage: no contradiction found, and the KONNRA field is not a mis-filled rating. KONNRA documents 500V AC / minute for the KR1256, against its own 150V rated voltage — a factor of about 3.3, which is the shape of a genuine dielectric-withstand test rather than a rating copied into the wrong field. Hirose’s DF13 withstanding figure is Not documented in the series data reviewed here, so the two cannot be compared directly; confirm it on Hirose’s DF13 specification sheet. One observation worth carrying into that check: the same 500V AC / minute figure appears in KONNRA’s documentation for its KR1002 series, the Hirose DF19 equivalent. That suggests a common dielectric-withstand test applied across KONNRA’s small-pitch ranges rather than a series-specific measurement — which is fine, as long as your design review knows it. Source: KONNRA KR1256 and KR1002 product pages; Hirose DF13 series page.

1. Mating durability is published on the Hirose side and not on the KONNRA side. Hirose documents 30 or 50 mating/unmating cycles depending on variant. KONNRA does not document a cycle count for the KR1256. On a 1.25mm crimp interface this matters less than it does on a display connector — the mating half is usually a harness that is fitted once — but if your service model involves re-mating, ask for the figure. Source: Hirose DF13 series page; KONNRA KR1256 main product page.

1. Applicable wire is specified two different ways. Hirose specifies a wire type — discrete wire, recommended sizes spanning AWG 26 to AWG 32 — and cites a Ø0.6±0.03 dimension in its catalogue material. KONNRA specifies an outer dimension instead: insulation O.D. 1.0mm max, with no wire gauge or conductor construction listed. These are not the same kind of specification. A maximum jacket diameter of 1.0mm is generous — wider than most cable that would crimp reliably into a 1.25mm contact — so pin the accepted conductor size and insulation diameter to the drawing for your specific assembly rather than working to the 1.0mm ceiling. Source: Hirose DF13 series page and DF13 series catalogue entry; KONNRA KR1256 main product page.

1. Connector envelope dimensions are published on the Hirose side and not on the KONNRA side. Hirose documents heights of 3.4mm to 5.4mm, widths of 3.2mm to 5.5mm and lengths of 4.15mm to 30.85mm across the series. KONNRA does not publish an envelope dimension on the product page. The mechanical envelope governs board stacking, cable bend clearance and whether the connector fits under a cover — so this has to come from the KR1256 engineering drawing before the footprint is released rather than from the product page. Source: Hirose DF13 series page; KONNRA KR1256 main product page and engineering drawing.

1. Materials and flammability are documented in different terms. KONNRA publishes a material list — PA66 / PA6T / UL94 / Phosphor Bronze / Brass — and a UL94 flammability entry. Hirose’s series page documents the contact material as tin plated or gold plated and lists the housing colour as beige, but does not publish a flammability rating in the series data reviewed here. If the housing material is a constraint for you — high-temperature reflow narrows the acceptable resin, and PA66 and PA6T are not interchangeable on that point — the specific resin has to be confirmed per part. Source: KONNRA KR1256 main product page; Hirose DF13 series page.

One more thing this table does not show. Every “Not documented” in this guide is a gap in the documentation reviewed, not a statement that the property does not exist. Hirose publishes a DF13 specification sheet with the full electrical and mechanical tables, and KONNRA publishes the KR1256 specification PDF. Neither was fully retrievable in the research pass behind this guide, and rather than fill those cells from a third-party aggregator, they are left open. That is why the sources section at the end names each file individually.

Design and Use Notes for a 1.25mm Crimp Interface

A 1.25mm crimp connector is a mature, well-understood part, and the failures that reach a customer are almost never electrical. They are mechanical and process-related, and they cluster in five places.

Do not assume the series letter tells you the mating geometry

The DF13 and the DF14 are both 1.25mm, and neither mates with the other. Cross-reference on the part number, and if the part number is unreadable, measure the pitch and inspect the mating half before ordering anything. A DF13 header takes a DF13 socket; there is no adapter that makes the two families mate inside the same footprint.

Treat the KONNRA family assignment as three separate parts, not one

In KONNRA’s cross-reference range the three 1.25mm answers sit next to each other:

Hirose series	KONNRA series	Note
DF13	KR1256	This guide
DF14	KR1255	Different mating geometry from the DF13, same pitch
DF14 with lock	KR1258	DF14 interface with a locking feature

A quotation that offers “a 1.25mm equivalent” without naming which of the three it is has not answered the question. Ask which series is being quoted.

Wire selection is the deciding variable, and KONNRA’s data sheet only gives you half of it

Hirose specifies the wire side of the DF13 as discrete wire, with recommended sizes spanning AWG 26 to AWG 32 across the series. KONNRA specifies insulation O.D. 1.0mm max. Those two statements do not overlap cleanly, and the gap is where field problems live.

Practical rule. Choose the wire from the gauge side — stay inside Hirose’s AWG 26 to AWG 32 window — then verify that the jacket diameter also satisfies KONNRA’s 1.0mm max. A 1.0mm ceiling will not stop you using an oversized jacket, but an oversized jacket will not crimp properly, and crimp quality on a 1.25mm contact is most of the assembly’s reliability. Pin both numbers to the harness drawing.

Crimp quality is a tooling question, not a wire question

The DF13 terminates by crimping, and Hirose lists Contact as a separate connector type — meaning the terminal is ordered as its own line item and installed with its own tooling. Two consequences:

• If you build harnesses in house, ask which applicator and press the terminal is validated against before you buy a reel of contacts. A contact that is crimped with the wrong tool will pass a pull test on the bench and fail in the field.
• If you buy finished assemblies, the tooling question becomes your supplier’s, and it is worth asking directly, because it is the difference between a harness vendor and an assembly bench.

Ask us which tooling the KR1256 terminal is validated against — it is a legitimate question and it is documented on the connector side, not the cable side.

Friction locking is a feature, and it changes how you design the harness

KONNRA documents a friction locking mechanism on the KR1256 series, describing it as a design that improves the robustness of the mated connection and maintains connection stability under vibration or shock. Practical consequences:

• The unmating force is not zero. Route the harness so that a service technician can get a grip on the socket and pull it squarely. A harness routed hard against a wall or bent immediately at the connector gives nothing to pull on.
• Leave a strain-relief loop. The lock holds the connector, not the wire. A straight, taut run from the socket into a cable tie puts every pull force into the crimp.
• Do not rely on the lock alone in a shock environment. Lock plus a cable tie to the board is the combination that survives.

KONNRA also documents an anti-skew box structure intended to prevent mis-insertion — the box geometry guides the socket home rather than relying on the operator to align it. That is a genuine process benefit, but it does not remove the need for a polarisation check on the drawing: confirm which way round the socket goes before the harness is released, because a harness built with reversed orientation will still physically fit some designs.

Board-side routing and the keep-out

The KR1256 board-mounted half is a wafer — a header in Hirose’s vocabulary — available in DIP (through-hole) and SMT, in straight and right-angle orientation. Three routing notes:

• Right-angle wafers put the cable along the board. They are the right answer when the harness has to travel across the board or exit through a side wall, and the wrong answer when it has to exit upward.
• Straight wafers put the cable perpendicular to the board. Reserve enough height above the connector for the cable’s minimum bend radius, not just for the connector.
• Check the footprint from the engineering drawing, not from the product page. KONNRA’s product page does not publish an envelope dimension; the drawing does. On this family, the drawing is the document that decides whether the part fits.

➡️ KR1256 series engineering drawing (PDF)

Temperature and process

KONNRA documents the KR1256 operating range as −40°C to +105°C, which is wider than Hirose’s −35°C to +85°C. That is useful, but the figure that usually bites in production is the reflow or soldering profile for the SMT wafer, and that is Not documented in the material reviewed here. Take it from the KR1256 specification PDF before you set a profile, and confirm the same profile is valid for the housing resin you are using.

➡️ KR1256 product specification (PDF) · KR1256 package specification (PDF)

Components and Configuration Options

The KR1256 series is not a single part. It is a small configuration space — two board-mounting technologies, two wafer orientations, one or two rows, and a housing and terminal to match. KONNRA publishes eight components against the series.

Component	KONNRA part page	What it is	What it maps to on the Hirose side
DIP single-row right-angle wafer	1256-dip90	Through-hole header, cable exits parallel to the board	DF13 THT right-angle header
DIP single-row straight wafer	1256-dip180	Through-hole header, cable exits perpendicular to the board	DF13 THT straight header
SMT single-row right-angle wafer	1256-smt90	Surface-mount header, cable exits parallel to the board	DF13 SMT right-angle header
SMT single-row straight wafer	1256-smt180	Surface-mount header, cable exits perpendicular to the board	DF13 SMT straight header
SMT dual-row straight wafer	1256-smt180l	Surface-mount dual-row header, straight orientation	DF13 dual-row SMT header
Single-row housing	1256-hs	Cable-side socket for 2–15 positions	DF13 single-row socket
Dual-row housing	1256-hl	Cable-side socket for 2×5 to 2×20 positions	DF13 dual-row socket
Terminal	1256-t	Crimp contact for discrete wire	Hirose lists Contact as its own DF13 connector type

Figure 2 — KR1256 DIP single-row right-angle wafer: through-hole header, cable parallel to the board

➡️ DIP Single Row Right Angle Wafer

Figure 3 — KR1256 1.25mm pitch DIP single-row straight wafer: through-hole header, cable perpendicular to the board

➡️ DIP Single Row Straight Wafer

Figure 4 — KR1256 SMT single-row straight wafer: surface-mount header for reflow assembly

➡️ SMT Single Row Straight Wafer

Figure 5 — KR1256 SMT dual-row straight wafer: the dual-row option, 2×5 to 2×20 positions

➡️ SMT Dual Row Straight Wafer

Figure 6 — KR1256 crimp terminal: the contact that carries the connection

➡️ KR1256 Terminal

How to read this list. Every row is a separately ordered item with its own drawing, which mirrors the way Hirose splits the family into header, socket and contact. If you are cross-referencing a DF13 bill of materials, the mapping is mechanical: headers become wafers, sockets become housings, contacts become terminals. What does not map mechanically is the footprint — the KONNRA wafer geometry has to be checked against the Hirose header footprint position by position, and that is the single most common reason a first-article build fails.

KONNRA’s published series description adds two things the Hirose page does not state. The KR1256 is described as supporting automatic mounting to improve productivity, and as using an anti-skew box structure to avoid mis-insertion and a friction locking mechanism to hold the mated connection under vibration or shock. Hirose lists pick-and-place mounting as a DF13 series feature and states there is no staggered lead, which is the board-side enabler for automatic placement — so the two descriptions agree in substance on automatic assembly, while the locking and anti-skew features are KONNRA’s own characterisation of the part.

What the Hirose DF13 Is Used For

The DF13’s documented application is broad rather than narrow. Hirose positions it as a signal connector for wire-to-board links in compact equipment, and the series features — compact size, multi-contact, pick-and-place mounting, basic functionality at a small size — describe a general-purpose part rather than a specialised one.

Application	Why the DF13 fits
Compact consumer and handheld electronics	1.25mm pitch with multi-contact counts up to 15 in a single row, in a compact envelope
Board-to-harness signal links inside industrial equipment	Crimped discrete wire is a serviceable, repairable termination — the harness can be replaced without touching the board
Servers and industrial control boards	Multi-contact single-row and dual-row options concentrate signals in a small footprint
Medical products and instrumentation	Supported by KONNRA’s ISO13485 medical device quality system where the product falls in that scope
Automotive sub-assemblies outside the sealed-connector scope	KONNRA’s automotive-grade series hold LV214 and US CAR-2 where the application requires them
Anywhere a cable has to be replaced in the field	The crimp-and-socket architecture lets a technician swap the harness rather than rework the board
Designs that need a second source with an identical footprint	KONNRA documents the KR1256 against the DF13 interface at 1.25mm pitch in DIP and SMT wafers
Boards that mix single-row and dual-row connectors	Both layouts are in the same series, in the same pitch, from the same supplier

What the DF13 is not for. It is not a power connector. The series is documented at 1.0A and 2.5A, and the KONNRA side is documented at 1A — so it carries signal and modest supply current, not motor, heater or lighting loads. If your design needs materially more than 1A across the range, the answer is a larger pitch class, not a different DF13 variant. And because the series terminates discrete wire only, it is not the part for a flat-cable link or a board-to-board stack — those are different families.

Cable Assembly Options

KONNRA builds assemblies on the KR1256 interface in the standard harness configurations.

Figure 7 — KR1256 single-row housing: the cable-side half, 2–15 positions

➡️ Single Row Housing

Figure 8 — KR1256 dual-row housing: the cable-side half, 2×5 to 2×20 positions

➡️ Dual Row Housing

Cable type	Description	Typical use
Single-headed	Housing on one end, bare wire leads on the other	Pigtail from a board header to a termination block
Same-side-head	Housing on both ends, same orientation	Extending an existing harness between two boards
Reverse-side-head	Housing on both ends, reversed orientation	Routing a harness through a hinge, a fold or a cabinet wall
Adapter and transition cables	KR1256 on one end, another interface on the other	Where one board uses a DF13 header and the other end does not match
Locking-housing assemblies	Built on the KR1258 interface where a DF14-with-lock variant is required	Applications that need positive retention rather than friction

Transition harnesses are a routine request on this family, because the connectors that get confused with the DF13 are all nearby in pitch and none of them mate. A 1.25mm header on one board and a different 1.25mm interface on the other end cannot be joined by a direct mate — the conversion has to happen in the cable. KONNRA’s harness division builds these to order.

Connector lead time is typically 2–3 weeks; wiring harness lead time is typically 3–4 weeks.

➡️ Explore KONNRA wiring harness capabilities

Sourcing the Hirose DF13: What Procurement Teams Ask

Engineering decides that a connector will work. Procurement decides whether the supply chain around it is safe.

“Can you be a second source without changing our design?” That is what a documented cross-reference is for. The KR1256 is specified against the Hirose DF13 at 1.25mm pitch in DIP and SMT wafers with single-row and dual-row housings and a crimp terminal. We confirm equivalence against your specific part number, because position count, row count, wafer orientation and mounting technology all change the answer.

“What are your lead times?” Connector production lead time is typically 2–3 weeks. Wiring harness lead time is typically 3–4 weeks. Key materials are prestocked.

“How long for samples?” Complete connector set samples can be delivered within 45 days. Sample harnesses can be supplied from the same process used in production, which matters on a 1.25mm pitch part where crimp quality is most of the reliability.

“What qualifications do you hold?” ISO9001, ISO14001, IATF16949, ISO45001:2018, ISO13485, IPC620, and UL product and operational safety certifications. Automotive-grade series additionally hold LV214 and US CAR-2.

“How do we know the parts match your documentation?” A CNAS-accredited laboratory with 45+ sets of precision testing instruments, with dimensional and electrical verification data available on request. 95% of production processes carry full-line intelligent visual CCD inspection; automotive series receive 100% CCD inspection.

“Are you a manufacturer or a trader?” A manufacturer. Dongguan Konnra Electronics Co., Ltd., founded 2004, with in-house mould design, injection moulding, stamping, assembly, and inspection — so the connector and the cable assembly come from one quality system.

“What volumes can you support?” KONNRA reported 2025 sales of RMB 310 million, with connectors at 60% and wiring harnesses at 40% of the product mix, across four production bases with automation coverage exceeding 95%.

“Who else buys from you?” KONNRA states that it serves global cooperative clients including BYD, Volkswagen, and DJI.

➡️ Request the vendor qualification pack — certificates, test capability summary, product drawings, and a sample plan in one enquiry.

How to Get a Cross-Reference Check on Your DF13 Part Number

Most DF13 sourcing enquiries stall on the same thing: the buyer is not sure what information the supplier needs, so the enquiry never gets sent. Here is the complete list.

Send us:

1. The original Hirose part number, if you have it — for example DF13-2S-1.25C, or the full header part number including its suffix
2. Position count — and whether it is single row (2–15) or dual row (2×5 to 2×20)
3. Row count — one or two. The DF13 is offered in both, and the two are different hardware
4. Wafer orientation and mounting technology — straight or right angle, and DIP (through-hole) or SMT
5. Wire specification — gauge, strand construction and jacket diameter. Hirose’s recommended sizes span AWG 26 to AWG 32 and KONNRA’s jacket ceiling is 1.0mm, so the jacket diameter is not optional information on this series
6. Current per contact — especially if your design draws more than 1A, because that is the figure where the two sides are documented differently
7. Application, annual volume and whether you buy connectors or finished harnesses
8. A drawing or photo if the part number is unreadable, if the design has been reverse-engineered, or if the note says “DF12” and you need it resolved to a series

When you send a part number, we will confirm three things against Hirose’s own documentation: the applicable current rating for your specific part number and wire, the mounting footprint your wafer geometry corresponds to, and whether your row count and position count are covered by the KONNRA range. Those are the three places a DF13 cross-reference most often goes wrong.

What you get back: a mapped KONNRA part number with the relevant product and engineering drawings, a specification comparison against your original part, and a sample and quote plan.

Engineer’s Pre-Release Checklist

Run this before you release a drawing for a DF13-family connector.

• Series confirmed by part number, not by name or pitch. DF13 and DF14 are both 1.25mm and do not mate. DF12 is a separate Hirose designation, and a drawing that says “DF12” while describing a 1.25mm wire-to-board crimp connector has the wrong series on it.
• The half is named correctly. On a DF13 the board-mounted half is a header (P) and the cable-side half is a socket (S); the crimp terminal is a separately ordered contact. On a KONNRA drawing the same parts are a wafer, a housing and a terminal.
• Row count decided — one or two rows, and the position count confirmed against the KONNRA range: 2–15 single row, 2×5 to 2×20 dual row. Confirm intermediate dual-row counts in writing rather than assuming a continuous range.
• Wafer orientation and mounting technology chosen — straight or right angle, DIP or SMT — and the footprint taken from the KR1256 engineering drawing, not from the product page or from the Hirose footprint.
• Current per contact checked against the 1A documented figure, and against the 2.5A series-level figure on the Hirose side if your design needs more. This is the most consequential difference in the comparison.
• Wire specified as gauge plus jacket diameter. Stay inside Hirose’s recommended AWG 26 to AWG 32 window and inside KONNRA’s 1.0mm max insulation O.D., and write both on the harness drawing.
• Crimp tooling identified. The DF13 terminates by crimping and the contact is its own line item. Confirm which applicator and press the KR1256 terminal is validated against, whether you build in house or buy the harness.
• Plating finish confirmed with a thickness. KONNRA documents gold flash / tin over nickel with no micron figure; Hirose documents 0.2μm, 0.76μm and 1.0μm. If contact finish is part of your qualification, get the number.
• Mating durability accepted. Hirose documents 30 or 50 cycles depending on variant; KONNRA does not document a cycle count. If your service model depends on re-mating, request the figure.
• Housing resin confirmed if your process is temperature-sensitive. KONNRA lists PA66 / PA6T / UL94; PA66 and PA6T are not interchangeable on high-temperature reflow, and the resin has to be confirmed per part number.
• Reflow or soldering profile taken from the KR1256 specification PDF. It is Not documented on the product page, and the SMT wafer needs it.
• Retention and strain relief designed. The KR1256 friction lock holds the connector, not the wire — leave a gripping surface for service and a relief loop in the harness.
• Polarisation checked on the drawing so the harness is not built with the socket reversed.

➡️ Send us your drawing. We will review it against the KR1256 specification and come back with any mismatch we find — before you commit tooling. Submit a drawing for review

Why Source DF13 Connectors from KONNRA

Dongguan Konnra Electronics Co., Ltd. (brand: KONNRA) was founded in 2004 and is a National High-Tech Enterprise specialising in connector and wiring harness research, development, production, and sales.

Manufacturing depth. A vertically integrated process covering precision mould design and manufacturing, automation design, precision injection moulding, stamping, assembly, and CCD visual inspection. Automation coverage exceeds 95% across production lines.

Testing and validation. A CNAS-accredited laboratory with 45+ sets of precision testing instruments, and CAE analysis — contact nonlinear analysis, material nonlinear analysis, motion simulation, thermal field analysis, and high-frequency analysis — performed in Ansys 2022 R1. Verification data is available on request.

Inspection coverage. Full-line intelligent visual CCD inspection covers 95% of production processes, using Mitsubishi and Panasonic PLC control systems with FA25–35mm optical lenses and 5-megapixel cameras. Automotive connector series receive 100% CCD visual inspection.

Quality systems. ISO9001, ISO14001, IATF16949, ISO45001:2018, ISO13485, IPC620, and UL product and operational safety certifications, with automotive-grade series additionally certified to LV214 and US CAR-2.

Capacity and delivery. Production bases in Dongguan Wangniudun (30,000 m², 350+ employees), Dongguan Changan (10,000 m², 150+ employees), and Hunan Daoxian (2,600 m², 100+ employees), with regional offices in Beijing, Chongqing, Hunan, Shanghai, and Kunshan. Key materials are prestocked, and complete connector set samples can be delivered within 45 days. KONNRA reported 2025 sales of RMB 310 million, with connectors at 60% and wiring harnesses at 40% of the product mix, and has served global cooperative clients including BYD, Volkswagen, and DJI.

Custom and joint R&D. Where a standard part does not fit — an unterminated position count, a specific wafer orientation, or a harness that has to transition between two interfaces — KONNRA supports customer joint R&D customisation.

How to Identify Whether Your Connector Is a DF13

If you are holding a connector and a drawing you cannot match, work through these in order:

1. Measure the pitch — centre-to-centre between adjacent contacts. 1.25mm points at the DF13 or DF14 class (Hirose), or another 1.25mm family. 1.0mm points at DF19, DF20, DF50 or FX15, and rules the DF13 out entirely.
2. Count the rows. The DF13 is offered in 1 or 2 rows. A two-row 1.25mm crimp connector is in DF13 territory.
3. Count the positions. The DF13 series position set is 2–15, plus 20, 30 and 40. A count outside that set needs the original series page opened rather than a guess.
4. Identify the halves correctly. A DF13 header sits on the board; a DF13 socket holds a crimped contact and is at the end of a discrete-wire harness. If the cable-side half is a flat cable or a soldered assembly, it is not a DF13.
5. Check the termination method. The DF13 terminates by crimping discrete wire. If the conductor is insulation-displaced into a flat ribbon, you are looking at a different family.
6. Confirm the pitch against the housing, not just the header. Measuring both halves is what catches a mixed pair of families — a DF13 header and a DF14 socket will look plausible on the header side and fail to mate.

If you are still unsure, photograph the connector next to a ruler, with the part number markings visible if any, and send it to us. On a 1.25mm pitch part a photo identifies the pitch reliably; the part number identifies the series. And if your drawing says DF12, mention it — that is the mix-up this guide opens with, and it is resolvable from the pitch alone.

Frequently Asked Questions

What is a Hirose DF13 connector?

A 1.25mm pitch miniature crimping connector for wire-to-board connections, sold by Hirose Electric under its SignalBee™ range. Hirose lists the connector types as header, socket and contact, offers the series in one or two rows, and lists positions of 2 through 15 plus 20, 30 and 40. It is rated 150V AC and 150V DC, with a rated current of 1.0A and 2.5A across the series, 30 or 50 mating cycles depending on variant, gold or tin plating at 0.2μm, 0.76μm or 1.0μm, and an operating range of −35°C to +85°C. It terminates discrete wire by crimping, and is UL certified.

Is the DF13 the same as the DF12?

No. The DF12 is a separate Hirose series designation, and DF13 is the 1.25mm pitch wire-to-board crimping family described in this guide. They do not share a mating interface. The DF12’s own specifications are outside the DF13 documentation used for this guide and are marked Not documented here rather than quoted from memory — confirm them on Hirose’s DF12 series page. If a drawing says “DF12” but the part is a 1.25mm crimp wire-to-board connector, the drawing most likely means DF13.

What is the KONNRA equivalent of the Hirose DF13?

The KONNRA KR1256 series — a 1.25mm pitch wire-to-board connector documented from 2–15 positions in single row and 2×5 to 2×20 positions in dual row, at 1A and 150V, offered as DIP and SMT wafers in single row and dual row, with a single-row housing, a dual-row housing and a crimp terminal.

How many pins does the DF13 have?

Hirose’s series listing covers 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 20, 30 and 40. KONNRA documents the KR1256 as 2–15 in single row and 2×5 to 2×20 in dual row. The single-row spans are equivalent; the dual-row descriptions are not — verify the exact count before you release a drawing.

What is the current rating of the DF13?

Hirose lists 1.0A and 2.5A across the series, and its part page for DF13-2S-1.25C lists 2.5A for that specific 2-position socket housing. KONNRA documents the KR1256 at 1A. Both figures are correct against their own part numbers — but a single “1A” quoted as a cross-reference is not the same statement as “1.0A and 2.5A” quoted as a series rating. If your design draws more than 1A, confirm the applicable rating for your specific part number.

What is the voltage rating of the DF13?

150V. Hirose documents it as AC 150.0V and DC 150.0V; KONNRA documents the KR1256 as 150V. On this parameter the two sides agree — the only difference is that Hirose publishes both the AC and the DC figure while the KONNRA value carries no AC/DC qualifier.

What is the DF13’s withstanding voltage?

KONNRA documents 500V AC / minute for the KR1256, against its own 150V rating — a genuine dielectric-withstand figure rather than a rating copied into the wrong field. Hirose’s DF13 withstanding voltage is Not documented in the series data reviewed for this guide, so the two cannot be compared directly; confirm it on the Hirose DF13 specification sheet. The same 500V AC / minute figure appears in KONNRA’s documentation for its KR1002 series, which suggests a common withstand test across its small-pitch ranges.

What wire does the DF13 use?

Discrete wire, terminated by crimping. Hirose’s recommended wire sizes span AWG 26 to AWG 32 across the series, and its catalogue material cites a Ø0.6±0.03 dimension. KONNRA documents an insulation O.D. of 1.0mm max and no wire gauge. Specify both the gauge and the jacket diameter on the harness drawing, and take the conductor size from the Hirose AWG window rather than from the 1.0mm ceiling.

Does the DF13 support IDC or FPC termination?

Not as documented. The DF13 series is a crimping connector for discrete wire — Hirose lists header, socket and contact as its connector types and crimping as the wire termination method, and its own catalogue title describes the series as a miniature crimping connector. Flat-cable and FPC termination belong to other Hirose families, not to the DF13. If a drawing asks for a DF13 with IDC or FPC termination, resolve the part number before ordering.

What is the difference between the DF13 and the DF14?

Mating geometry, at the same pitch. Both are 1.25mm and neither mates with the other. In KONNRA’s cross-reference range the DF13 is KR1256, the DF14 is KR1255, and the DF14 with a lock is KR1258. KONNRA’s published comparison of the Hirose 1.0mm and 1.25mm series lists the DF14 as a single-row family at 1.0A. Cross-reference on the part number, and if you have both on the same board, keep the harnesses physically distinguishable.

What is the difference between the DF13 and the DF19?

Pitch, interface and purpose. The DF13 is 1.25mm, wire-to-board, crimp-only, in one or two rows. The DF19 is 1.0mm, single row, in 8, 14, 20 and 30 positions, and is built around a three-way interface where one receptacle accepts crimped wire, FPC or micro-coaxial cable. The DF13 has no equivalent of that third path. KONNRA’s equivalents are KR1256 for the DF13 and KR1002 for the DF19, and the two do not mate.

What mounting options does the DF13 offer?

Hirose lists the series mounting styles as SMT and THT, with straight and right-angle orientation, standard on-board mounting side, soldering as the PCB stabilising feature, and no staggered lead. Connector heights across the series run from 3.4mm to 5.4mm and widths from 3.2mm to 5.5mm. KONNRA offers the KR1256 as DIP (through-hole) wafers and SMT wafers, each in straight and right-angle versions.

How many times can a DF13 be mated?

Hirose documents 30 or 50 mating/unmating cycles, depending on variant. KONNRA does not publish a cycle count for the KR1256. On most designs in this pitch class the socket is fitted once and left in place, so the durability figure rarely binds — but if your service model involves repeated re-mating, request the data.

Where is the DF13 used?

Broadly, wire-to-board signal links inside compact equipment — consumer and handheld electronics, industrial control boards, servers and instrumentation, and medical products, supported by KONNRA’s ISO13485 medical device quality system where the product falls in that scope. It is a general-purpose signal connector at 1.0A/2.5A across the series, not a power connector and not a display interface.

How long does it take to get samples?

KONNRA can deliver complete connector set samples within 45 days. Connector production lead time is typically 2–3 weeks and wiring harness lead time typically 3–4 weeks.

Start Your Cross-Reference Check

KONNRA supplies the KR1256 series as individual components or as complete pre-crimped cable assemblies, and builds adapter and transition harnesses to order.

• Request a quote — KR1256 pricing, MOQ and configuration options for your position count, row count, wafer orientation and mounting technology
• Request a sample — complete connector set samples within 45 days
• Request cross-reference verification — confirm KR1256-to-Hirose-DF13 equivalence against your specific part number, including the applicable current rating
• Request the DF12-to-DF13 series resolution — if your drawing or BOM names DF12 for a 1.25mm wire-to-board crimp connector, send it and we will confirm which series the part number resolves to
• Request drawings — series engineering drawing, product specification and package specification
• Request a vendor qualification pack — certificates, test capability summary and quality documentation
• Request adapter harnesses — DF13 to DF14, DF13 to DF19, or DF13 to another interface on the far end of the cable
• Submit a drawing for review — we will flag any specification mismatch before you commit tooling

Contact KONNRA Electronics

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

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Sources and method. This guide is built from four primary documents and one published secondary source, and every figure in it is traceable to one of them. Where a figure could not be traced, the cell reads Not documented rather than being filled from a third-party aggregator.

Hirose DF13 documentation. Hirose Electric’s DF13 series page (https://www.hirose.com/en/product/series/DF13) supplied: the series positioning as a SignalBee™ 1.25mm pitch miniature crimping connector, UL certified; the series features as compact size, multi-contact, pick-and-place mounting, basic functionality at a small size, and UL certification; the connector types header, socket, contact; the mounting styles SMT, THT; the mounting side standard on-board; the PCB stabilising feature soldering; staggered lead: no; the orientation straight, right angle; the number of rows (interface) 1, 2; the contact pitch and mounting pitch 1.25mm; the position list 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 20, 30, 40; the rated current 1.0, 2.5 A; the rated voltage AC 150.0V and DC 150.0V; the connector length set 4.15, 5.4, 6.65, 7.15, 7.9, 8.4, 9.15, 9.65, 10.4, 10.9, 11.65, 12.1, 12.15, 12.9, 13.4, 14.15, 14.65, 15.4, 15.9, 16.65, 17.15, 17.9, 18.35, 18.4, 19.15, 19.65, 20.4, 22.15, 22.9, 23.4, 24.6, 27.85, 29.15, 30.85 mm; the connector width set 3.2, 3.4, 3.6, 4.3, 4.8, 5.0, 5.2, 5.5 mm; the connector height set 3.4, 3.6, 4.0, 4.3, 4.8, 5.0, 5.4 mm; the mating/unmating cycle figures 30, 50; the contact plating types gold, tin and plating thicknesses 0.2, 0.76, 1.0 μm; the housing colour beige; the wire termination method crimping; the recommended wire type discrete wire; the recommended wire sizes (minimum AWG 30, 32; maximum AWG 26, 30); the operating temperature limits −35°C to +85°C; and the safety standard UL.

Hirose part-level documentation. Hirose’s product page for undefined (Hirose part reference CL0536-0001-4-00) supplied the part-level figures used in the current-rating discussion: rated current 2.5A, connector length 4.15mm, connector width 3.2mm, connector height 4.0mm, contact pitch 1.25mm. The DF13 Series Catalog entry (Hirose catalogue download, category DF13) supplied the catalogue title describing the series as a 1.25mm pitch miniature crimping connector (UL listed), the contact material note tin plated or gold plated, and the conductor dimension Ø0.6±0.03. The DF13 specification sheet was not retrievable in the research pass behind this guide; every parameter that would normally be taken from it — withstanding voltage, contact resistance, insulation resistance, durability per variant, soldering and reflow conditions — is therefore marked Not documented rather than quoted.

KONNRA documentation. KONNRA’s KR1256 main product page (https://konnra.com/product/kr1256-equivalent-to-hirose-df13-alternatives-connector/) supplied: pitch 1.25mm; circuits 2-15pin / 2×5-2×20pin; current 1A; voltage 150V; the general specification table (Material: PA66/UL94/PA6T/Phosphor Bronze/Brass; Insulation O.D. 1.0mm Max; Withstanding Voltage 500V AC/minute; Temperature Range −40°C to +105°C; Contact Resistance 30mΩ Max; Insulation Resistance 500MΩ Min; Product Plating Gold flash/Tin over Nickel); the component list and part pages (DIP single-row right-angle wafer 1256-dip90, DIP single-row straight wafer 1256-dip180, SMT single-row right-angle wafer 1256-smt90, SMT single-row straight wafer 1256-smt180, SMT dual-row straight wafer 1256-smt180l, single-row housing 1256-hs, dual-row housing 1256-hl, terminal 1256-t); the series description including automatic mounting support, the anti-skew box structure and the friction locking mechanism; and the document links to the KR1256 Series Drawing (2026.1.26), Specification undefined and Package Specification. KONNRA’s KR1002 (Hirose DF19) product page supplied the cross-comparison of the 500V AC / minute withstanding figure. Company figures in the KONNRA section — founded 2004, National High-Tech Enterprise, Dongguan Wangniudun 30,000 m² / 350+ employees, Dongguan Changan 10,000 m² / 150+ employees, Hunan Daoxian 2,600 m² / 100+ employees, CNAS-accredited laboratory with 45+ sets of precision testing instruments, Ansys 2022 R1, 95% automation coverage and 95% CCD inspection coverage with 100% on automotive series, ISO9001 / ISO14001 / IATF16949 / ISO45001:2018 / ISO13485 / IPC620 / UL and LV214 / US CAR-2, 45 days for complete connector set samples, connector lead time 2–3 weeks, harness lead time 3–4 weeks, RMB 310 million 2025 sales with connectors at 60% and harnesses at 40%, and cooperative clients including BYD, Volkswagen and DJI — are KONNRA’s own published company figures, reproduced without alteration.

Secondary source. The comparison rows for the DF14, DF19, DF20 and DF50 series in the “DF13 vs the Other Hirose Series” table are taken from KONNRA’s published Hirose DF19 connector guide (https://konnra.com/hirose-df19-connector-complete-guide/), which draws those figures from Hirose series data, together with the cross-reference assignments KR1002 = Hirose DF19, KR1255 = Hirose DF14, KR1256 = Hirose DF13 and KR1258 = Hirose DF14 with lock.

Method. Hirose figures and KONNRA figures were read from their respective published pages and placed side by side without reconciliation. Where the two disagree, the disagreement is stated in the difference list above rather than averaged. Where one side is silent, the cell reads Not documented and the gap is named in the difference list, so that a reader knows exactly which parameters remain open before committing a drawing. Two verification points are flagged for manual confirmation: the Hirose DF13 specification-sheet parameters that were not retrievable in this research pass, and the DF12 series specifications, which are outside the documentation this guide is built on.