{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"71991-309LF","brand":"Amphenol","brandSlug":"amphenol","productSlug":"71991-309LF","canonicalUrl":"https://icsourcedirect.com/amphenol/71991-309LF","factsUrl":"https://icsourcedirect.com/api/mcp/products/71991-309LF","rawCanonicalId":null},"summary":{"shortDescription":"Amphenol ICC (FCI) Dubox™ series, 18-position dual-row receptacle, 0.100\" (2.54mm) pitch, through-hole solder termination, 30.0µin gold on mating contacts, 11.04mm mated stack height, UL94 V-0 thermoplastic housing, blue insulation.","salesMarkdown":"## Dubox™ Dual-Row Receptacle for Board-to-Board Stacking The 71991-309LF: The push-pull fastening type allows tool-less unmating, which is typical for card-edge or mezzanine connectors where access is limited. ## Board Fit and Stack Height Budget This receptacle accepts a mating header with 0.100\" pitch and 0.025\" square pins. The 0.118\" (3.00mm) solder tail length suits standard 1.6mm-thick PCBs — the tail protrudes below the board for wave-solder fillet formation. The 11.04mm mated stack height is a fixed value — it determines the spacing between the two PCBs in a mezzanine configuration. For a given enclosure z-height, subtract the board thicknesses and component keep-outs to verify clearance. The bottom or top entry style means the receptacle can be mounted on either side of the board, which helps with board orientation in multi-card cages. It is supplied in tube packaging. The part is RoHS-compliant per the manufacturer's standard declaration.","metaTitle":"71991-309LF Dubox™ 18-Position Receptacle, 0.100\" Pitch","metaDescription":"Amphenol ICC (FCI) Dubox™ 71991-309LF: 18-position dual-row receptacle, 0.100\" pitch, 30.0µin gold mating finish, 11.04mm stack height, UL94 V-0.","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":"18","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":"Gold","Number of Positions Loaded":"All","Material Flammability Rating":"UL94 V-0","Contact Finish Thickness - Post":"78.7µin (2.00µm)","Contact Finish Thickness - Mating":"30.0µin (0.76µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.6900","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/d12387c44afc462d5fb4943551712d4d.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the pitch of 71991-309LF?","answer":"This is the standard Dubox™ pitch and matches the footprint of any 0.100\" square-pin header."},{"question":"Is 71991-309LF RoHS compliant?","answer":"Yes, the 71991-309LF is RoHS-compliant per Amphenol ICC (FCI) standard manufacturing. No separate RoHS certificate is required for BOM entry."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"isd-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/71991-309LF","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/71991-309LF 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}}