The Amphenol FCI (Amphenol FCI Conn) 79821-142HLF is the 42-circuit member of the BERGSTIK II series — a dual-row unshrouded header rated 5 A per contact at 0.100 inch (2.54 mm) pitch, intended for board-to-board stacking in commercial and industrial environments. Gold-over-phosphor-bronze contacts at 30.0 µin (0.76 µm) on the mating interface give a reliable metallic interface for repeated plug cycles, and the push-pull fastening holds the header seated without hardware. UL94 V-0 housing material supports the flammability requirement common in panel and enclosure assemblies.
What it mates with
This is a male pin header — it mates with the matching BERGSTIK II dual-row receptacle or IDC socket housing in the same series and position count. The unshrouded design means keying and polarity protection depend on the housing or the board layout rather than the header shroud; if your system relies on polarisation, confirm the receptacle carries a polarisation feature before committing. The push-pull fastening provides retention without jack-screws or nuts — suitable for applications where the board stack is not repeatedly disconnected in the field.
Sourcing and lifecycle
The 79821-142HLF carries an Active product status. For a 42-position board-to-board header in a long-established series, sourcing is typically quoted to order against the BOM quantity with Amphenol FCI as the primary manufacturer. No official successor order code appears in the on-record data for this member — if your design extends across multiple positions in the same series, the same base product number with a different position suffix is the natural peer to check for multi-position continuity.