{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"79821-142HLF","brand":"Amphenol","brandSlug":"amphenol","productSlug":"79821-142HLF","canonicalUrl":"https://icsourcedirect.com/amphenol/79821-142HLF","factsUrl":"https://icsourcedirect.com/api/mcp/products/79821-142HLF","rawCanonicalId":null},"summary":{"shortDescription":"Amphenol FCI BERGSTIK® II, 42-position dual-row unshrouded header, 0.100\" (2.54 mm) pitch, through-hole solder termination, gold-plated phosphor bronze contacts, 5 A at 110 V, UL94 V-0.","salesMarkdown":"## BERGSTIK II 42-Position Unshrouded Header The Amphenol FCI 79821-142HLF is a 42-position dual-row unshrouded header from the BERGSTIK II series, built on the standard 0.100\" (2.54 mm) pitch that matches legacy DIP footprints and common perf-board layouts. The 0.100\" row spacing mirrors the pin field of a standard DIP package, so the 42-position layout fits a 2 x 21 grid that suits wide I/O banks, parallel bus interfaces, or control card edge connections. The 0.100\" (2.54 mm) pitch is the key footprint match — it drops directly onto a standard 0.100\" grid PCB without custom routing. The 42 positions, all loaded, mean the BOM line count must match exactly; there are no unpopulated positions to adjust for a different circuit count. The 5 A per-circuit rating at 110 V covers signal-level loads and light power distribution, but the real duty limit is the gold plating grade: 30.0 µin (0.76 µm) gold on the mating side is specified for repeated mating cycles, not for high-current bus-bar duty where tin plating on a larger contact surface would be preferred. The through-hole solder termination with a 0.200\" (5.08 mm) post length gives a solid mechanical anchor through the board — the overall contact length of 0.730\" (18.54 mm) means the pin stands 0.430\" (10.92 mm) above the insulator for mating, with enough post length below for a wave-solder fillet. The BERGSTIK II series is a long-running catalog line, so the 0.100\" pitch and 42-position variant should remain available for production builds without an obsolescence watch.","metaTitle":"Amphenol FCI 79821-142HLF BERGSTIK II Header, 42-pos","metaDescription":"Amphenol FCI BERGSTIK II 79821-142HLF, 42-position dual-row unshrouded header, 0.100\" (2.54 mm) pitch, gold-plated contacts rated 5 A at 110 V, UL94 V-0","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Pin Headers, Sockets & Housings"],"specifications":{"Style":"Board to Board","title":"79821-142HLF","Series":"BERGSTIK® II","Package":"Bag","Shrouding":"Unshrouded","Termination":"Solder","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)","Voltage Rating":"110V","Contact Material":"Phosphor Bronze","Insulation Color":"Black","Insulation Height":"0.100\\\" (2.54mm)","Base Product Number":"79821","Number of Positions":"42","Row Spacing - Mating":"0.100\\\" (2.54mm)","Contact Length - Post":"0.200\\\" (5.08mm)","Current Rating (Amps)":"5A","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 - Mating":"30.0µin (0.76µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.1883","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/c8f0394c32e820c9621af8eb0b9440c3.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/79821-142HLF/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 79821-142HLF?","answer":"Contact the storefront with your BOM quantity for a same-day quote — current pricing and availability are confirmed at that time."},{"question":"What is the mating connector for the 79821-142HLF?","answer":"This unshrouded header mates with any standard 0.100\" (2.54 mm) pitch female socket strip or IDC receptacle that accepts square 0.025\" posts. The mating half must provide the alignment and polarization since the header has no shroud."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/79821-142HLF","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/79821-142HLF 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}}