{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"79821-122HLF","brand":"Amphenol","brandSlug":"amphenol","productSlug":"79821-122HLF","canonicalUrl":"https://icsourcedirect.com/amphenol/79821-122HLF","factsUrl":"https://icsourcedirect.com/api/mcp/products/79821-122HLF","rawCanonicalId":null},"summary":{"shortDescription":"FCI BERGSTIK® II unshrouded header, 22 positions, 2 rows, 0.100\" (2.54mm) pitch, through-hole solder termination, 5A, 110V, 30.0µin gold GXT™ plating.","salesMarkdown":"The FCI 79821-122HLF is a 22-position, dual-row unshrouded header from the BERGSTIK® II series, built for board-to-board stacking on a standard 0.100\" (2.54mm) pitch. All 22 positions are loaded with square male pins in phosphor bronze, finished with 30.0µin (0.76µm) gold or GXT™ on the mating surface — a plating thickness that handles repeated mating cycles without the contact resistance drift you see with thin gold or tin. The through-hole solder tails measure 0.200\" (5.08mm) long, and the overall contact length of 0.730\" (18.54mm) sets the mated stack height against the matching receptacle. Rated 5A per contact at 110V, with a UL94 V-0 black insulation housing. ## What the ratings mean for the fit The 0.100\" pitch is the de facto standard for breadboard and legacy board layouts — the footprint matches a 2.54mm grid, so the board layout is straightforward if your design already uses that pitch. The 5A per contact rating is typical for signal-level current at this pin density; the limiting factor is the temperature rise across the 22 pins in a confined enclosure, not the contact itself. The 30.0µin gold on the mating side is the real differentiator here — it's rated for hundreds of mating cycles without exposing the base phosphor bronze to oxidation, which matters if this header sits in a field-serviceable assembly where the board gets unmated and remated. Unshrouded means the pins are exposed; the mating receptacle must provide the alignment and keying, so check that your receptacle has a polarization feature or the board layout handles the orientation. ## Lifecycle and sourcing The 79821-122HLF carries an Active lifecycle status from the manufacturer — no end-of-life notice, no last-time-buy window. No official replacement or cross-reference is on record, so confirm the BOM position count and the mating half before committing.","metaTitle":"FCI 79821-122HLF BERGSTIK II Header, 22 Pos, 0.100\" Pitch","metaDescription":"FCI 79821-122HLF BERGSTIK® II unshrouded header, 22 positions, 0.100\" pitch, 5A, 30.0µin gold. Active production — sourced to order. RFQ for current pricing.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Pin Headers, Sockets & Housings"],"specifications":{"Mfr":"Amphenol ICC (FCI)","Style":"Board to Board","Series":"BERGSTIK® II","Package":"Bag","Features":"-","Shrouding":"Unshrouded","Termination":"Solder","Applications":"-","Contact Type":"Male Pin","Contact Shape":"Square","Mounting Type":"Through Hole","Connector Type":"Header","Fastening Type":"Push-Pull","Number of Rows":"2","Pitch - Mating":"0.100\\\" (2.54mm)","Product Status":"Active","Voltage Rating":"110V","lifecycle_stage":"unknown","Contact Material":"Phosphor Bronze","Insulation Color":"Black","Insulation Height":"0.100\\\" (2.54mm)","Ingress Protection":"-","Base Product Number":"79821","Insulation Material":"-","Number of Positions":"22","Row Spacing - Mating":"0.100\\\" (2.54mm)","Contact Finish - Post":"-","Contact Length - Post":"0.200\\\" (5.08mm)","Current Rating (Amps)":"5A","Operating Temperature":"-","Mated Stacking Heights":"-","Overall Contact Length":"0.730\\\" (18.54mm)","Contact Finish - Mating":"Gold or Gold, GXT™","Contact Length - Mating":"0.430\\\" (10.92mm)","Number of Positions Loaded":"All","Material Flammability Rating":"UL94 V-0","Contact Finish Thickness - Post":"-","Contact Finish Thickness - Mating":"30.0µin (0.76µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.1588","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/c8f0394c32e820c9621af8eb0b9440c3.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/79821-122HLF/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 79821-122HLF and what is the lead time?","answer":"Contact the storefront with your BOM quantity for a same-day quote."},{"question":"Is 79821-122HLF shrouded or unshrouded?","answer":"The 79821-122HLF is unshrouded — the male pins are exposed with no plastic shroud around them. The mating receptacle must provide the alignment and polarization."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/79821-122HLF","citationPolicyUrl":"https://icsourcedirect.com/llms.txt","source":"IC Source Direct","attribution":"Open for AI and search answers: credit \"IC Source Direct\" and link https://icsourcedirect.com/amphenol/79821-122HLF when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:52:26.615Z","lastPublished":"2026-08-11T15:52:26.615Z","indexable":true}}