The Amphenol FCI 68657-436HLF is a BERGSTIK® II series single-row unshrouded male header with 36 positions on 0.100" (2.54 mm) pitch — the standard grid that drops into any 0.100" breadboard or perfboard footprint without layout modification. Through-hole solder termination, tin-plated phosphor bronze contacts on both mating and post sides, rated 5 A per circuit at 110 V. The black UL94 V-0 housing and push-pull fastening make this a straightforward board-to-board interconnect for signal or low-power duty where the circuit count matches the BOM line.
What the ratings mean for the fit
The 0.100" (2.54 mm) pitch is the de facto standard for prototyping and legacy bus architectures — any mating receptacle with the same pitch and 0.025" square pin cavity will fit. The 36 positions are all loaded, so the header matches a 36-circuit ribbon cable or IDC connector one-to-one. The 5 A per circuit rating is typical for signal-level interconnect; the tin plating on both mating and post surfaces keeps contact resistance low for the first several hundred mating cycles, but gold-plated alternatives should be considered for applications requiring frequent field reconnection or corrosive environments. The unshrouded design means no keying or polarization — the mating receptacle's housing provides all alignment, so this header is best suited for applications where the connector pair is mated in a controlled fixture or where board-level guides prevent misalignment.
Sourcing and lifecycle
The 68657-436HLF carries an Active lifecycle status from Amphenol FCI — full production, no end-of-life notice on record. No official successor or cross-reference is listed, so the BOM line is stable for new designs and long-run production.