The Amphenol 75844-318-72LF is a 72-position, dual-row unshrouded breakaway header from the BERGSTIK® series. It uses a 0.100" (2.54mm) pitch on both rows and between rows, matching the standard 0.100" grid that dominates through-hole PCB layouts. The breakaway construction means the 72-position strip can be snapped to shorter lengths — useful for prototyping or when the BOM calls for a non-standard position count. The header is rated 5A per contact at 110V, with tin plating on the mating surface at 150.0µin (3.81µm) thickness, and carries a UL94 V-0 flammability rating on the black thermoplastic insulator.
Board Layout and Fit
For the board layout engineer: the 2.54mm pitch and 0.100" row spacing define a standard footprint — the 72 positions occupy a 35.56mm (1.400") row length. The through-hole solder tails are 0.120" (3.05mm) long, suited for standard 1.6mm PCBs. The overall contact length is 0.445" (11.30mm), with a mating pin length of 0.225" (5.72mm). The unshrouded design gives the assembler access to probe points on the backplane, but provides no keying — the mating half must be aligned by the board stack or a secondary alignment feature.
Lifecycle and Sourcing
The 75844-318-72LF carries an Active lifecycle status from Amphenol — no end-of-life notice, no last-time-buy window. No official direct replacement or cross-reference is on record — the BERGSTIK series includes many position counts and plating options, but this exact 72-position tin-plated variant has no listed substitute.