{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"71991-439LF","brand":"Amphenol","brandSlug":"amphenol","productSlug":"71991-439LF","canonicalUrl":"https://icsourcedirect.com/amphenol/71991-439LF","factsUrl":"https://icsourcedirect.com/api/mcp/products/71991-439LF","rawCanonicalId":null},"summary":{"shortDescription":"FCI Dubox board-to-board receptacle, order code 71991-439LF, 78 positions, dual row, 0.100\" (2.54mm) pitch, 11.04mm mated stack height, through-hole solder termination, tin-plated mating contacts, UL94 V-0.","salesMarkdown":"## Through-hole receptacle for board stacking The 71991-439LF is the 78-position member of FCI's Dubox board-to-board receptacle line, designed for parallel board stacking at an 11.04mm mated height. It uses a dual-row 0.100\" (2.54mm) pitch layout with tin-plated mating contacts and through-hole solder termination, rated UL94 V-0 for the thermoplastic housing.","metaTitle":"71991-439LF Dubox Receptacle, 78-Pos, 2.54mm Pitch","metaDescription":"FCI Dubox 71991-439LF receptacle, 78 positions, dual row, 0.100\" (2.54mm) pitch, through-hole solder, tin-plated contacts, UL94 V-0, active production.","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":"Dubox™","Package":"Tube","Features":"-","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)","Product Status":"Active","Voltage Rating":"-","lifecycle_stage":"unknown","Contact Material":"Phosphor Bronze","Insulation Color":"Blue","Insulation Height":"0.275\\\" (6.99mm)","Ingress Protection":"-","Base Product Number":"71991","Insulation Material":"Thermoplastic, Glass Filled","Number of Positions":"78","Row Spacing - Mating":"0.100\\\" (2.54mm)","Contact Finish - Post":"Tin","Contact Length - Post":"0.118\\\" (3.00mm)","Current Rating (Amps)":"-","Operating Temperature":"-","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":"$5.9692","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/d12387c44afc462d5fb4943551712d4d.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/71991-439LF/alternatives.json"},"ai":{"faq":[{"question":"What is the mated stack height for this receptacle?","answer":"The specified mated stacking height is 11.04mm when paired with the matching Dubox header. This height is set by the receptacle insulation height of 0.275\" (6.99mm) plus the header profile."},{"question":"What compliance documentation is available for the 71991-439LF?","answer":"RoHS and REACH compliance documentation is provided with the shipment; contact the supplier for specific certificates."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/71991-439LF","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/71991-439LF 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}}