The Amphenol FCI 75844-150-72LF is a 72-circuit dual-row BERGSTIK® breakaway header in 0.100" (2.54mm) pitch — the largest position count in this series. The 30µin GXT gold plating on the mating interface distinguishes this from tin-plated variants, giving it the durability for repeated mate cycles that field-service and test-fixture work demands. Rated 5 A per contact at 110V, it covers board-to-board stacking and cable-side termination across the full industrial temperature window of -65°C to 130°C.
Board-level fit and stack height
The 0.100" insulation height acts as the board standoff in a mated pair — the header's own body sets the separation between adjacent boards without a separate spacer. The 0.230" engagement length gives the receptacle pin enough travel to seat fully before the connector body bottoms out, which matters when the board-to-board gap is held by the header's shoulder rather than the post. The square post geometry accepts the corresponding IDC or crimp-style receptacle without orientation ambiguity — square pins don't rotate in the housing, so polarization relies entirely on the shrouding, and this connector is unshrouded, meaning keying depends on the mating half or the board layout.
Applications and environments
Board-to-board stacking, cable termination, and test-point routing are the primary uses for a dual-row 2.54mm breakaway at this circuit count. The -65°C to 130°C range covers industrial enclosures that run cold in unheated facilities and hot near heat-generating components. UL94 V-0 thermoplastic makes it acceptable in most safety-rated enclosures without a secondary flame-barrier. For any application involving vibration — motor drive boards, process automation backplanes — confirm the mating receptacle provides positive latch retention, since the push-pull push-pull header alone relies on contact normal force rather than a mechanical lock.