{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"10039851-101LF","brand":"Amphenol","brandSlug":"amphenol","productSlug":"10039851-101LF","canonicalUrl":"https://icsourcedirect.com/amphenol/10039851-101LF","factsUrl":"https://icsourcedirect.com/api/mcp/products/10039851-101LF","rawCanonicalId":null},"summary":{"shortDescription":"Amphenol FCI Airmax VS® header, male pins, 54 positions, 9 rows, 6 columns, 0.055\" (1.40mm) pitch, press-fit, right-angle, board edge, gold 30.0µin, UL94 V-0, Natural.","salesMarkdown":"The Amphenol FCI 10039851-101LF is a 54-position right-angle header from the Airmax VS® series, designed as a high-speed daughtercard connector. It uses a 9-row by 6-column grid on a 1.40mm pitch, with all positions loaded. The contact layout is arranged as 18 differential pairs with 18 ground pins — a pinout that keeps each signal pair referenced to an adjacent ground return, which matters for controlled-impedance routing through the backplane. Termination is press-fit, which means the compliant pin displaces the plated-through hole wall rather than relying on solder. That makes this header suited for solderless backplane assembly where rework access is limited and the board sees multiple reflow passes for other components. The mating interface carries 30.0µin gold over the base metal. In a backplane context where the daughtercard may be swapped during field service, the gold preserves contact resistance through those cycles. ## Board mounting and assembly considerations Mounting is board-edge, through-hole, right-angle. The press-fit tail requires a specific PCB hole diameter and plated-through-hole wall thickness to achieve the correct interference fit — the datasheet drawing gives the finished hole size and the recommended pad pattern. The 1.40mm pitch is fine enough to route differential pairs between columns on a standard backplane layer stack, but the 9-row depth means the connector footprint extends about 12.6mm from the board edge, so the keep-out zone on the daughtercard needs to account for that.","metaTitle":"Amphenol FCI 10039851-101LF Airmax VS Header, 54 Pos","metaDescription":"Amphenol FCI 10039851-101LF Airmax VS® right-angle header, 54 positions (9x6), 1.40mm pitch, press-fit termination, 30µin gold.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circular Connectors"],"specifications":{"Color":"Natural","Pitch":"0.055\\\" (1.40mm)","Series":"Airmax VS®","Features":"-","Packaging":"Bulk","Part Status":"Active","Termination":"Press-Fit","Manufacturer":"Amphenol ICC (FCI)","Mounting Type":"Board Edge, Through Hole, Right Angle","Connector Type":"Header, Male Pins","Contact Finish":"Gold","Number of Rows":"9","Voltage Rating":"-","Connector Style":"High Speed","Connector Usage":"Daughtercard","lifecycle_stage":"unknown","Number of Columns":"6","Base Product Number":"10039851","Number of Positions":"54","Current Rating (Amps)":"-","Operating Temperature":"-","Contact Layout, Typical":"18 Differential Pairs, 18 Ground","Contact Finish Thickness":"30.0µin (0.76µm)","Number of Positions Loaded":"All","Material Flammability Rating":"UL94 V-0"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$14.6200","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/2a73d2357a222b1db22ee09c834f5a84.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/10039851-101LF/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 10039851-101LF and get a price?","answer":"Submit a quote request for current pricing and availability — both are confirmed at quote time."},{"question":"What is the compatible mating connector for 10039851-101LF?","answer":"This is a male-pin header from the Airmax VS series. It mates with the matching Airmax VS receptacle (female) daughtercard connector from the same series — the receptacle uses the same 9-row, 6-column grid and 1.40mm pitch. Confirm the specific receptacle order code against the BOM position count."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/10039851-101LF","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/10039851-101LF 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}}