40-Position BERGSTIK II Header for Board-to-Board Interconnects
At a 0.100" (2.54mm) pitch with a matching row spacing of 0.100" (2.54mm), it follows the standard 0.1" grid that dominates prototype and production PCB layouts.
The 0.100" (2.54 mm) pitch drives the board footprint — standard 0.025" square pins on a 0.1" grid, compatible with most prototyping perfboards and production layouts. The 40 positions in two rows mean a 20-pin-per-row footprint, 2.54 mm apart, with 2.54 mm row spacing. The 110 V rating is the working voltage — the unshrouded pins reduce creepage distance compared to a box header, so keep adjacent traces clear.
Pinout and Mating Considerations
The 67998-440HLF is a through-hole male pin header with all 40 positions loaded. The pinout follows standard dual-row numbering: pin 1 at one end of row A, pin 2 opposite in row B, alternating down the length. The 0.318" (8.08 mm) mating pin length and 0.107" (2.71 mm) solder post length are fixed — the overall contact length of 0.525" (13.34 mm) determines the board-to-board stack height when mated with a matching receptacle. Use a female socket header with 0.100" (2.54 mm) pitch and 0.025" square pin acceptance for a reliable mate.