What it is
The Amphenol FCI 93939-170HLF is the 70-circuit member of the BERGSTIK II dual-row header series, configured board-to-board with a 0.100 inch (2.54 mm) pitch and right-angle through-hole mounting. Unshrouded square pins accept the matching BERGSTIK II receptacle housing; the push-pull fastening relies on header geometry rather than a locking latch. Gold flash over nickel on the mating face delivers 30.0 µin (0.76 µm) of contact finish, rated 5 A per circuit at 110 V — the tin solder tails are post-plated for wave or hand-solder board assembly.
Position count and stack-up
With 70 positions across two rows on a 0.100 inch (2.54 mm) pitch, this header requires careful trace fan-out at the board entry. The 0.190 inch (4.83 mm) insulation height sets the mated stack profile; the 0.160 inch (4.06 mm) contact engagement length and 0.120 inch (3.05 mm) post length are sized for standard PCB thickness.
Plating and current duty
Gold flash on the mating interface with tin solder tails is the standard BERGSTIK II configuration — the precious metal governs first-mate resistance and cycle life at the interface, while the tin post plating handles solder joint reliability. Rated 5 A per contact with a phosphor bronze body — the 110 V rating covers signal and low-power distribution within industrial automation, instrumentation, and control modules.
Mating and termination
Mates with the matching BERGSTIK II dual-row receptacle housing in the same 0.100 inch (2.54 mm) dual-row pitch and 70-position configuration. Solder termination is through-hole — the square pin shape provides self-alignment during insertion and resists rotation in the hole. The housing ships in a bag with all 70 positions pre-loaded.
Compliance and sourcing
Listed Active. The housing carries a UL94 V-0 flammability rating for industrial equipment enclosures. No official successor or cross-reference — the BOM line should be confirmed against the BERGSTIK II 70-position pin-out before committing. Sourced to order against RFQ; confirm lead time and MOQ with your distributor.