The Amphenol FCI 79821-442HLF is a 42-position dual-row male pin header in the BERGSTIK II family, designed for board-to-board stacking at 0.100" (2.54 mm) pitch. Phosphor bronze contacts are tin-plated on both the mating face and the solder tail at 100 µin (2.54 µm), delivering 5 A per circuit through a square-pin through-hole termination — a workhorse rating for power-distribution and signal-routing boards in industrial control and instrumentation. The housing is unshrouded and the push-pull fastening type means retention depends on the mating receptacle's latch — the board-mount receptacle or IDC socket must have a positive-lock feature.

Amphenol 79821-442HLF BERGSTIK II Header 42-pos 2.54mm Pitch 5A
Amphenol FCI 79821-442HLF, BERGSTIK II series, 42-position dual-row unshrouded male header, 0.100" (2.54 mm) pitch, 5 A per circuit, tin-plated phosphor bronze contacts, through-hole solder termination, push-pull fastening, UL94 V-0 black housing, board-to-board style.
- New & original stockTraceable channels only — no mixed lots, no re-taped reels.
- Factory packaging where availableSealed reels, trays and bags; cut quantities always stated on the quote.
- Photo-verified countsEvery line counted and photographed before the box closes.
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Specifications
| Parameter | Value |
|---|---|
| Series | BERGSTIK® II |
| Voltage | 110 V |
| Current | 5 A |
| Mounting | Through Hole |
| Connector size | Header |
| Contact material | Phosphor Bronze |
| Pitch | 0.100" (2.54 mm) |
| Package | Bag |
| Positions | 42 |
| Shrouding | Unshrouded |
| Orientation | Board to Board |
| Termination | Solder |
| Gender (Contact) | Male Pin |
| Contact plating | Tin |
| Locking (Fastening) | Push-Pull |
| Rows | 2 |
Product details
Frequently asked questions
What is 79821-442HLF's listed style?
Board to Board. This dual-row 0.100" pitch header is designed for board-to-board stacking or daughtercard-to-backplane header mating.
What series does 79821-442HLF belong to?
BERGSTIK II — the Amphenol FCI 2.54 mm pitch dual-row header series used in industrial control, instrumentation, and embedded-comms boards.
What compliance documentation is available for 79821-442HLF?
The housing carries a UL94 V-0 flammability rating. Specific RoHS, REACH, or UL agency approval documentation should be requested through the official Amphenol FCI product changelog or via an RFQ to the franchised channel.