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Wire to Board Connector
Industrial, IT Datacom
Designed for demanding power distribution in ATX power supplies, industrial control units, and server motherboards, CONSHARE presents this 4.2mm pitch hollow pin connector. The straight, 180° DIP version combines a rugged LCP housing (UL94V-0, black) with tin-plated brass terminals, delivering stable electrical performance in temperatures up to 105°C. Unlike generic connectors that rely on solid pins, our hollow pin design reduces mating wear and maintains consistent contact force over thousands of cycles.
Traditional solid pin connectors often suffer from high insertion resistance, leading to bent pins or damaged PCB pads during assembly. The hollow (tubular) pin used here acts as a compliant mechanism: it slightly compresses during mating, creating a balanced normal force without over-stressing the housing. End users benefit from easier cable assembly, fewer rejected joints, and >1,500 mating cycles without signal degradation.
With a vertical orientation and through-hole mounting, this connector simplifies PCB routing. The 180° design allows direct mating with wire harnesses from above, minimizing loop inductance in high‑current paths – critical for CPU and GPU power rails where voltage ripple must stay below 1%.
The black liquid crystal polymer (LCP) body withstands peak reflow temperatures up to 260°C, ideal for lead‑free soldering processes. More importantly, the housing meets UL94V-0 (no dripping under fire) and carries the “W” category (water-resistant) per CONSHARE’s internal standard. While not fully submersible, it reliably survives condensation, splashes, and high-humidity environments (85% RH at 85°C) – a common failure point for cheaper nylon housings.
Brass base offers excellent conductivity (≈28% IACS). The tin plating layer (2–4 µm) provides three practical benefits:
Low contact resistance (<10 mΩ initial) for minimal power loss.
Protection against fretting corrosion in vibration‑prone equipment like UPS or CNC machines.
Easy visual solder inspection – tin’s wetting angle gives clear fillet formation.
Both configurations share the same 4.2mm pitch, hollow pin design, and black LCP housing. The table below highlights their dimensional envelopes and typical use cases – numbers are derived from CONSHARE’s verified tooling data.
Specification | 2x4 Pin (8 circuits) | 2x12 Pin (24 circuits) |
|---|---|---|
Row spacing | 4.20 mm (fixed) | 4.20 mm (fixed) |
Body length (A) | 12.60 mm | 46.20 mm |
Overall width (B) | 18.20 mm | 51.80 mm |
Mating height | 9.50 mm (typical) | 9.50 mm (typical) |
Rated current | Up to 9A per pin* | Up to 9A per pin* |
Typical application | ATX 4+4 CPU power, PCIe auxiliary | Server main power (24‑pin), industrial motor drives |
*Current rating derated when >70% pins are simultaneously loaded at ambient >60°C – refer to CONSHARE’s thermal derating curve.
2x4 pin (2x04) – Replaces legacy Mini-Fit Jr. 8‑circuit connectors but with a more robust hollow pin that self‑cleans minor oxidation during mating. Ideal for retrofitting power entry modules on 3D printers or LED wall controllers.
2x12 pin (2x12) – Directly compatible with standard ATX 24‑pin power layouts. The longer body (46.2mm) still leaves enough PCB clearance for surrounding capacitors. Because of the hollow pin’s lower insertion force, you can plug/unplug the 24‑pin harness three times easier than solid‑pin equivalents – a concrete benefit for field service technicians
Most “4.2mm pitch connectors” on the market are reverse‑engineered copies with three hidden flaws:
Inconsistent pin retention – They use stamped solid pins that loosen after 200 cycles. Our hollow pin maintains >3N minimum retention force even after 1,500 cycles (tested per EIA-364-09).
Poor high‑temperature creep resistance – PA66 housings soften at 125°C, causing terminal misalignment. CONSHARE’s LCP black housing has HDT of 280°C (1.82 MPa), so no warping even next to VRM heatsinks.
No water‑resistant verification – Many sellers claim “moisture protection” but skip IPx2 testing. This connector passes a 10‑minute drip test (1 mm/min) with no electrical leakage, thanks to the housing’s optimized labyrinth path.
Additionally, every CONSHARE connector is 100% electrically tested (Hi-Pot and contact resistance) before spooling. You receive a lot traceable label with each bulk pack – essential for ISO‑compliant manufacturers.
This 4.2mm pitch platform supports far beyond just 2x4 and 2x12. Based on the same tooling, CONSHARE offers:
Any pole count from 2x01 to 2x12 (e.g., 2x06 for 12‑pin EPS, 2x10 for 20‑pin legacy ATX).
Housing colors – Black (standard), Natural, Red, Orange, Yellow, Green, Blue, Purple, Gray, White, Pink, Beige.
Plastic material options – PA66 V2 (cost‑effective) or PA46 (higher CTI for 600V applications).
Terminal plating – Tin (standard) or optional gold (for signal integrity below 50mV).
We’ve seen this hollow pin connector solve three recurring customer issues:
High vibration in telecom rectifiers – The hollow pin’s elastic zone absorbs micro‑movements, preventing intermittent power loss. One base station provider reduced field returns by 62% after switching from solid‑pin headers.
Limited PCB space in drone battery management – The 180° vertical profile plus 12.6mm body length (2x4) allowed a 7mm reduction in board width compared to right‑angle alternatives.
Manual assembly errors in contract manufacturing – Low insertion force (<35N for 24‑pin) eliminated bent pins during hand assembly, increasing first‑pass yield from 91% to 99.3%.
For high‑current designs, pair the connector with CONSHARE’s recommended 16–18 AWG crimp terminals (sold separately) to achieve <5°C temperature rise at 8A continuous.
CONSHARE maintains engineering stock of 2x4 and 2x12 black LCP variants for same‑day shipment. Free samples (up to 5 pieces) are available via our website request form – include your target application and expected mating cycles for customized durability testing.
For volume orders , we provide a certificate of conformance with Cpk values on pin retention and coplanarity (≤0.1 mm standoff variation).
All specifications are typical at 25°C unless noted. CONSHARE reserves the right to improve designs without prior notice. This product is RoHS compliant and REACH SVHC‑free.
