{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"87185-431HLF","brand":"Amphenol","brandSlug":"amphenol","productSlug":"87185-431HLF","canonicalUrl":"https://icsourcedirect.com/amphenol/87185-431HLF","factsUrl":"https://icsourcedirect.com/api/mcp/products/87185-431HLF","rawCanonicalId":null},"summary":{"shortDescription":"Amphenol/FCI BERGSTIK® II Series, Board to Board Header, 31 Positions, 0.100\" (2.54mm) Pitch, 1 Row, Unshrouded, Through Hole, Solder Termination, Tin Mating/Post, 5A, 110V.","salesMarkdown":"The Amphenol/FCI 87185-431HLF is a 31-position, single-row BERGSTIK® II unshrouded header with a 0.100\" (2.54 mm) pitch. It uses square male pins in a through-hole solder termination, with tin plating on both the mating surface and the solder posts. The overall contact length runs 1.238\" (31.45 mm), with a mating length of 1.043\" (26.49 mm) and a post length of 0.095\" (2.41 mm). Rated at 5 A per contact and 110 V, it carries a UL94 V-0 flammability rating on the black insulation. ## What the 0.100\" Pitch and Unshrouded Design Mean for Your Build The 0.100\" (2.54 mm) pitch fits directly into 0.100\" perfboard patterns and legacy prototyping grids. The unshrouded design has no plastic wall around the pins. ## Current Rating and Contact Plating — Signal Duty, Not Bus Power Rated 5 A per contact at 110 V, this header is sized for signal-level interconnects and low-current power distribution — think logic-level lines, sensor inputs, or control signals on a PCB. The tin-on-tin plating (100.0 µin / 2.54 µm on the mating side, tin on the posts) is cost-effective for moderate mating cycles in controlled environments. Tin is not rated for the high-cycle or corrosive-duty applications where gold would be specified; for a connector that will be mated and unmated dozens of times inside a clean enclosure, tin holds up fine. The phosphor bronze contact material provides good spring properties and corrosion resistance for the duty class. ## Sourcing and Lifecycle This part carries an Active lifecycle status from the manufacturer — full production, no end-of-life notice. There is no official successor or cross-reference on record; the 31-position count is specific enough that a substitution would require a full BOM review.","metaTitle":"FCI 87185-431HLF BERGSTIK II Header, 31 Pos, 0.100\" Pitch","metaDescription":"Amphenol/FCI 87185-431HLF BERGSTIK® II unshrouded header, 31 positions, 0.100\" pitch, tin-plated, 5 A, UL94 V-0. Active production, sourced to order.","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":"BERGSTIK® II","Package":"Bag","Features":"-","Shrouding":"Unshrouded","Termination":"Solder","Applications":"-","Contact Type":"Male Pin","Contact Shape":"Square","Mounting Type":"Through Hole","Connector Type":"Header","Fastening Type":"Push-Pull","Number of Rows":"1","Pitch - Mating":"0.100\\\" (2.54mm)","Product Status":"Active","Voltage Rating":"110V","lifecycle_stage":"unknown","Contact Material":"Phosphor Bronze","Insulation Color":"Black","Insulation Height":"0.100\\\" (2.54mm)","Ingress Protection":"-","Base Product Number":"87185","Insulation Material":"-","Number of Positions":"31","Row Spacing - Mating":"-","Contact Finish - Post":"Tin","Contact Length - Post":"0.095\\\" (2.41mm)","Current Rating (Amps)":"5A","Operating Temperature":"-","Mated Stacking Heights":"-","Overall Contact Length":"1.238\\\" (31.45mm)","Contact Finish - Mating":"Tin","Contact Length - Mating":"1.043\\\" (26.49mm)","Number of Positions Loaded":"All","Material Flammability Rating":"UL94 V-0","Contact Finish Thickness - Post":"-","Contact Finish Thickness - Mating":"100.0µin (2.54µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.4298","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/92307fceaf3148c5e5d11d6ec0b95cb1.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/87185-431HLF/alternatives.json"},"ai":{"faq":[{"question":"What is the pitch of 87185-431HLF?","answer":"The pitch is 0.100\" (2.54 mm), which is the standard breadboard-compatible spacing."},{"question":"Is 87185-431HLF shrouded or unshrouded?","answer":"It is unshrouded — there is no plastic wall around the pins, so the mating housing must provide its own keying or polarization to prevent reverse-mating."},{"question":"What series is 87185-431HLF from?","answer":"It is from the BERGSTIK® II series by Amphenol/FCI."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/87185-431HLF","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/87185-431HLF 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}}