The Amphenol BERGSTIK II 93939-428HLF is a 28-position dual-row male header on the standard 0.100" (2.54 mm) pitch, designed for board-to-board interconnect applications. This right-angle through-hole variant mates with matching receptacle housings and IDC sockets on the same pitch, making it a direct fit for legacy 2.54 mm grid layouts. The unshrouded push-pull design keeps the board footprint compact — no side walls to encroach on adjacent components — but also means there is no polarization keying, so orientation must be set at the board layout stage. Tin plating on both the mating surface and the solder tails (100.0 µin on the mating side) keeps per-unit cost low for moderate-cycle-count applications — think internal board stacks, test fixtures, or peripheral interconnects where the connector is mated a handful of times over its service life. The 5 A per-circuit rating at the 0.100" pitch is typical for signal and light power duty; the limiting factor is the temperature rise through the unshrouded housing, not the contact itself. The UL94 V-0 rated black housing and phosphor bronze contacts suit equipment installed inside enclosures that require flammability compliance. Rated at 110 V, this header fits low-voltage signal and power distribution within a board assembly.
Mounting and footprint
Right-angle through-hole termination means the header sits flush against the board edge, with the pin row parallel to the PCB plane. The 0.120" (3.05 mm) post length gives enough tail for a standard wave-solder process through a 0.062" board. Mating pin length is 0.160" (4.06 mm) — sufficient to engage a standard box-header or IDC receptacle without bottoming out. Row spacing matches the pitch at 0.100" (2.54 mm), so the 28 positions occupy a 14-pin-per-row footprint. All positions are loaded — no optional empty slots to account for in the BOM.
Sourcing and lifecycle
The 93939-428HLF carries an Active lifecycle status from Amphenol — no end-of-life notice, no last-time-buy window. No official replacement or cross-reference is on record for this order code.