KR2525 Series Single Row Wire to Board Card Edge Connectors

Circuits & Dimensions (Drawing No. 2525FR101-A-S)

* Engineered for 1.55 ±0.1mm standard PCB edge card thickness. Polarization keying options (XP standard, XP-L left latch, XP-R right latch, XP-LR dual latch) available.

Overview

The KONNRA KR2525 series is an engineered 2.50 mm pitch one-piece card edge connector built in compliance with the European RAST 2.5 (Raster Appliance Software Technology) standard. Specially developed for compact, vibration-prone wire-to-board interconnects, the KR2525 connects directly onto the edge contact pads of a 1.55 mm (±0.1 mm) printed circuit board without requiring a mating pin header or SMT wafer.

Constructed with high-temperature, glow-wire compliant thermoplastic housing (UL 94V-0 / IEC 60335-1) and precision-stamped copper alloy contacts with bright tin-over-nickel plating, the KR2525 delivers outstanding current carrying capacity (3A AC/DC), high insulation resistance (≥1000MΩ), and low contact resistance (≤10mΩ) across an operating temperature range of -40°C to +125°C. Available from 2P to 10P with versatile polarization ribs and locking latches (XP, XP-L, XP-R, XP-LR), the KR2525 guarantees 100% error-free mating in automated harness assemblies for global home appliance and automotive manufacturers.

Key Advantages of KR2525 RAST 2.5 Connectors

• Direct Edge Card Mating (Zero Pin Header BOM Cost): Eliminates the requirement for board-mounted male pin headers or wafers and corresponding surface-mount or wave-soldering processes. This direct-to-board interface reduces total interconnect BOM costs by up to 35% and saves valuable vertical clearance above the PCB.
• Standardized RAST 2.5 Mechanical Keying & Latches: Complies with RAST 2.5 standard keying configurations (including XP center, XP-L left-side latch, XP-R right-side latch, and XP-LR dual latch). Distinct mechanical polarization notches prevent incorrect pin alignment and accidental reverse insertion during high-speed manual or robotic wiring assembly.
• High-Temperature & Glow-Wire Safety (IEC 60335-1 & UL 94V-0): Rated for harsh environments from -40°C to +125°C. Thermoplastic insulating housing meets UL 94V-0 flammability and passes the Glow Wire Test (GWT / GWFI) per IEC 60335-1, making it fully certified for unattended household appliances and automotive thermal zones.
• Exceptional Electrical Integrity & Vibration Resistance: High-conductivity copper alloy terminal contacts with bright tin plating over a nickel underplate maintain low contact resistance (≤10mΩ Max.) and high dielectric withstanding voltage (1000V AC/minute), ensuring stable signal and power delivery even under severe operating vibrations.
• Engineered for Standard 1.55mm PCB Thickness: Housing features precision guide ribs and chamfered insertion slots tailored for standard 1.55 ± 0.1 mm PCB edge tabs, providing optimal terminal normal contact force, low insertion effort, and secure card retention.