{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"71991-436LF","brand":"Amphenol","brandSlug":"amphenol","productSlug":"71991-436LF","canonicalUrl":"https://icsourcedirect.com/amphenol/71991-436LF","factsUrl":"https://icsourcedirect.com/api/mcp/products/71991-436LF","rawCanonicalId":null},"summary":{"shortDescription":"Amphenol ICC (FCI) Dubox 71991-436LF, 72-position dual-row board-to-board receptacle, 0.100\" (2.54mm) pitch, 11.04mm mated stacking height, tin-plated phosphor bronze contacts, through-hole solder termination, UL94 V-0 glass-filled thermoplastic housing in blue.","salesMarkdown":"## Board-to-Board Stacking Fit – 72 Positions at 2.54mm Pitch ## Contact and Termination – Tin-Plated Phosphor Bronze, Through-Hole Solder The solder posts are 0.118\" (3.00mm) long, through-hole termination. The receptacle accepts either bottom or top entry, so it can sit on either the top or bottom board in the stack — the same part number works in either position. This reduces the number of unique line items needed for a two-board mezzanine assembly. Standard packaging is a tube. ## Application Range – Automotive, Industrial, Telecom, General Purpose The 2.54mm pitch and through-hole termination suit it for environments where vibration is moderate and the board stack is not subject to continuous shock — the push-pull retention relies on contact friction, not a secondary lock.","metaTitle":"71991-436LF Dubox Receptacle – 72-Pos, 2.54mm Pitch","metaDescription":"Amphenol ICC (FCI) Dubox 71991-436LF: 72-position dual-row board-to-board receptacle, 0.100\" (2.54mm) pitch, 11.04mm mated stack height.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Pin Headers, Sockets & Housings"],"specifications":{"Style":"Board to Board","title":"71991-436LF","Series":"Dubox™","Package":"Tube","Termination":"Solder","Applications":"Automotive, General Purpose, Industrial, Telecommunications","Contact Type":"Female Socket","Contact Shape":"Square","Mounting Type":"Through Hole","Connector Type":"Receptacle, Bottom or Top Entry","Fastening Type":"Push-Pull","Number of Rows":"2","Pitch - Mating":"0.100\\\" (2.54mm)","Contact Material":"Phosphor Bronze","Insulation Color":"Blue","Insulation Height":"0.275\\\" (6.99mm)","Base Product Number":"71991","Insulation Material":"Thermoplastic, Glass Filled","Number of Positions":"72","Row Spacing - Mating":"0.100\\\" (2.54mm)","Contact Finish - Post":"Tin","Contact Length - Post":"0.118\\\" (3.00mm)","Mated Stacking Heights":"11.04mm","Contact Finish - Mating":"Tin","Number of Positions Loaded":"All","Material Flammability Rating":"UL94 V-0","Contact Finish Thickness - Post":"78.7µin (2.00µm)","Contact Finish Thickness - Mating":"78.7µin (2.00µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.9788","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/d12387c44afc462d5fb4943551712d4d.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the mated stacking height of the 71991-436LF?","answer":"The mated stacking height is 11.04mm. This is the fixed board-to-board gap when the receptacle is mated with its matching header."},{"question":"What is the pitch and number of positions for the 71991-436LF?","answer":"The pitch is 0.100\" (2.54mm) with 72 positions in a dual-row configuration. Row spacing is also 0.100\" (2.54mm)."},{"question":"What applications is the 71991-436LF suitable for?","answer":"The Dubox series is listed for Automotive, General Purpose, Industrial, and Telecommunications applications. The through-hole solder and tin-plated contacts suit moderate-vibration board-to-board stacks."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"isd-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/71991-436LF","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/71991-436LF when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-23T20:41:44.623Z","lastPublished":"2026-07-23T20:41:44.623Z","indexable":true}}