The Amphenol FCI 93939-438HLF is a 38-position, 2-row male pin header from the BERGSTIK® II series, designed for board-to-board or wire-to-board applications. It uses the industry-standard 0.100" (2.54 mm) pitch on both the pin-to-pin and row spacing, so the footprint matches legacy PCBs and common prototyping grids. The unshrouded, push-pull design means no locking ramp — the retention comes from the contact interference fit with the mating receptacle. Rated 5 A per circuit at 110 V, with tin-plated phosphor bronze contacts carrying a 100.0 µin tin finish on the mating surface.
The 0.100" pitch and row spacing set the board footprint — a 38-position, 2-row header needs 19 pins per row on a 0.100" grid, so the board layout requires 38 plated through-holes on a 0.100" square matrix. The 5 A per circuit rating is typical for a tin-plated header in this size class; the 100.0 µin tin thickness on the mating surface gives a higher number of insertion cycles than a thinner tin plate, but tin contacts are best suited to applications with limited reconnection frequency — think internal harnesses or semi-permanent board stacks rather than field-service connectors. The right-angle orientation means the header body sits at 90° to the board, so the mated height from the PCB surface to the mating interface is around 0.190" (4.83 mm) plus the mating contact length.