{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"87185-421HLF","brand":"Amphenol","brandSlug":"amphenol","productSlug":"87185-421HLF","canonicalUrl":"https://icsourcedirect.com/amphenol/87185-421HLF","factsUrl":"https://icsourcedirect.com/api/mcp/products/87185-421HLF","rawCanonicalId":null},"summary":{"shortDescription":"Amphenol FCI BERGSTIK® II, Board to Board Header, 21 Positions, 1 Row, 0.100\" (2.54mm) Pitch, Through Hole, Solder, Tin Mating Finish, 5A.","salesMarkdown":"## What This Connector Is The Amphenol FCI 87185-421HLF is a 21-position, single-row, unshrouded male header from the BERGSTIK® II series. It uses the industry-standard 0.100\" (2.54 mm) pitch, making it a drop-in fit for any board laid out for a 0.100\" header footprint. The contacts are square phosphor bronze pins with tin plating on both the mating surface and the solder tails, rated for 5 A per circuit. The housing is black UL94 V-0 polyamide, and the overall contact length is 1.238\" (31.45 mm) — a long-pin version suited for through-hole soldering into a standard PCB. ## What the Ratings Mean for the Build The 5 A per-circuit rating is a signal-grade figure — fine for logic-level loads, low-current I/O, or control signals, but not a power rail. The 0.100\" pitch limits the creepage between adjacent pins, so the 110 V rating is realistic for low-voltage signal paths, not mains-level isolation. The tin-on-tin contact interface is cost-effective but wears faster than gold under repeated mating; this header is best suited for a one-time build or a low-cycle interconnect where the connector is mated once and left alone. The unshrouded design means the pins are exposed — the mating receptacle must align squarely, and the board layout should keep adjacent components clear of the bare pins to avoid accidental shorts. ## Sourcing and Lifecycle The 87185-421HLF is listed as Active in production — no last-time-buy or end-of-life notice on record. There is no official replacement or cross-reference; the original part number is the correct BOM line item.","metaTitle":"Amphenol FCI 87185-421HLF Bergstik II Header, 21 Pos, 5 A","metaDescription":"Amphenol FCI Bergstik II 87185-421HLF, 21-position single-row unshrouded header, 0.100\" pitch, tin-plated contacts rated 5 A, through-hole solder.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Pin Headers, Sockets & Housings"],"specifications":{"Style":"Board to Board","title":"87185-421HLF","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":"1","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":"87185","Number of Positions":"21","Contact Finish - Post":"Tin","Contact Length - Post":"0.095\\\" (2.41mm)","Current Rating (Amps)":"5A","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 - Mating":"100.0µin (2.54µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.1406","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/92307fceaf3148c5e5d11d6ec0b95cb1.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/87185-421HLF/alternatives.json"},"ai":{"faq":[{"question":"What is the mating connector for 87185-421HLF?","answer":"The 87185-421HLF is an unshrouded male header. It mates with any standard 0.100\" (2.54 mm) pitch female receptacle housing designed for 21 positions in a single row — typically a Bergstik II or compatible socket strip."},{"question":"Is 87185-421HLF RoHS compliant?","answer":"The part is listed with tin plating on both the mating and post surfaces, consistent with RoHS-compliant finishes. Specific compliance documentation is available on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/87185-421HLF","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/87185-421HLF 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}}