{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"79821-440HLF","brand":"Amphenol","brandSlug":"amphenol","productSlug":"79821-440HLF","canonicalUrl":"https://icsourcedirect.com/amphenol/79821-440HLF","factsUrl":"https://icsourcedirect.com/api/mcp/products/79821-440HLF","rawCanonicalId":null},"summary":{"shortDescription":"Amphenol ICC BERGSTIK® II, 0.100\" (2.54mm) pitch, 40-position (2x20) unshrouded header, 5A per contact, tin-plated contacts, through-hole solder termination, UL94 V-0 black housing.","salesMarkdown":"## Product Introduction The Amphenol ICC 79821-440HLF is a 40-position (2x20) unshrouded male pin header from the BERGSTIK® II series, built on the industry-standard 0.100\" (2.54mm) pitch. It is a board-to-board interconnect component designed for through-hole solder termination to a PCB. The header carries a 5A per contact current rating at a 110V voltage rating, with all 40 positions loaded. The 0.100\" (2.54mm) pitch and dual-row layout with 0.100\" (2.54mm) row spacing place this header on a standard grid that matches legacy perf-board patterns and common IDC socket footprints. The overall contact length of 0.730\" (18.54mm) breaks down into a 0.430\" (10.92mm) mating length and a 0.200\" (5.08mm) solder post length, which sets the board-to-board stack height when mated with a standard receptacle. The through-hole solder termination is straightforward for wave or hand-solder assembly; the 0.200\" (5.08mm) post length provides adequate protrusion through the board for a reliable solder fillet on standard 0.062\" PCBs. For volume builds, the bag packaging (tray or tube equivalent) means it feeds into a standard through-hole assembly line without special handling — no reel, but no MSL concern either.","metaTitle":"Amphenol BERGSTIK II 79821-440HLF, 40-Pin Header","metaDescription":"Amphenol BERGSTIK II 79821-440HLF unshrouded header, 40 positions (2x20), 0.100\" pitch, 5A per contact, tin plating, 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":"79821-440HLF","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":"40","Row Spacing - Mating":"0.100\\\" (2.54mm)","Contact Finish - Post":"Tin","Contact Length - Post":"0.200\\\" (5.08mm)","Current Rating (Amps)":"5A","Overall Contact Length":"0.730\\\" (18.54mm)","Contact Finish - Mating":"Tin","Contact Length - Mating":"0.430\\\" (10.92mm)","Number of Positions Loaded":"All","Material Flammability Rating":"UL94 V-0","Contact Finish Thickness - Mating":"100.0µin (2.54µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$8.3900","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/c8f0394c32e820c9621af8eb0b9440c3.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/79821-440HLF/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 79821-440HLF?","answer":"Submit your BOM quantity to the storefront for a same-day quote with current pricing and availability."},{"question":"What is the current rating of 79821-440HLF?","answer":"The 79821-440HLF is rated at 5A per contact. This is a per-circuit rating at ambient temperature; derate above 25°C per the manufacturer's derating curve."},{"question":"What is the pinout of 79821-440HLF?","answer":"The 79821-440HLF is a 40-position header arranged as 2 rows of 20 pins on a 0.100\" (2.54mm) pitch with 0.100\" (2.54mm) row spacing. All 40 positions are loaded. Pin 1 is typically marked by a chamfer or square pad on the PCB footprint."},{"question":"What is the mating connector for 79821-440HLF?","answer":"As an unshrouded 0.100\" pitch dual-row header with 0.025\" square pins, it mates with any standard dual-row receptacle housing or IDC socket designed for that pin grid. Common mates include the Amphenol ICC DUBOX or similar 0.100\" pitch socket strips."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/79821-440HLF","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/79821-440HLF 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}}