{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"FX8C-140P-SV(91)","brand":"Hirose Electric Co Ltd","brandSlug":"hirose-electric-co-ltd","productSlug":"FX8C-140P-SV~191~2","canonicalUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/FX8C-140P-SV~191~2","factsUrl":"https://icsourcedirect.com/api/mcp/products/FX8C-140P-SV(91)","rawCanonicalId":null},"summary":{"shortDescription":"Hirose FunctionMax™ FX8C header, 140 positions, 0.60 mm pitch, dual-row, SMT, gold-plated contacts, outer shroud contacts, board guide, mated stacking heights 5 mm and 10 mm.","salesMarkdown":"At a 0.024\" (0.60 mm) pitch, it packs 70 contacts per row into a compact SMT footprint — the tight pitch is the main constraint on board routing density and per-circuit current, not the contact itself. Outer shroud contacts surround the signal array to provide a ground reference and mechanical alignment, while the integrated board guide takes the shear load during mating so the signal pins don't absorb the misalignment. Typical use is inside telecom switches, servers, or industrial controllers where a high-signal-count mezzanine card needs to stack at a fixed board-to-board gap. ## Stack Height Selection — One Header, Two Gaps The FX8C-140P-SV(91) supports mated stacking heights of 5 mm and 10 mm. The header itself is a fixed 4.45 mm above the board; the stack height is determined by which mating receptacle is used. That means one BOM line for the header covers two board-spacing requirements — useful if the same baseboard design mates with two different daughtercards at different gaps. The same-position siblings FX8C-140P-SV1(91) (5.45 mm board height), FX8C-140P-SV2(91) (6.45 mm), and FX8C-140P-SV4(91) (8.45 mm) share the identical 140-position, 0.60 mm pitch, gold-plated layout and outer shroud contacts. The only variable is the header's own height above the PCB, which shifts the mated stack by the same delta. If the design already calls for a 5 mm or 10 mm gap, the SV(91) is the correct call; if a non-standard gap is needed, one of the SV1/SV2/SV4 variants covers it without changing the footprint or pinout. No single-vendor lock — the FunctionMax FX8C series is a standard Hirose mezzanine family, so the footprint and mating half are consistent across the series if a different stack height is needed later.","metaTitle":"Hirose FX8C-140P-SV(91) FunctionMax Header, 140 Pos","metaDescription":"Hirose FX8C-140P-SV(91) FunctionMax™ FX8C header, 140 positions, 0.60 mm pitch, SMT, gold contacts. Active production, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":"FunctionMax™ FX8C","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Board-to-Board Connectors","Mezzanine & Stacking Connectors"],"specifications":{"Mfr":"Hirose Electric Co Ltd","Pitch":"0.024\\\" (0.60mm)","Series":"FunctionMax™ FX8C","Package":"Tube","Features":"Board Guide","Mounting Type":"Surface Mount","Connector Type":"Header, Outer Shroud Contacts","Contact Finish":"Gold","Number of Rows":"2","Product Status":"Active","lifecycle_stage":"unknown","Height Above Board":"0.175\\\" (4.45mm)","Base Product Number":"FX8","Number of Positions":"140","Mated Stacking Heights":"5mm, 10mm","Contact Finish Thickness":"-"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.4200","stockQuantity":26,"priceTiers":[{"qty":1,"price":"$6.42000","currency":"USD"},{"qty":10,"price":"$5.80800","currency":"USD"},{"qty":25,"price":"$5.48680","currency":"USD"},{"qty":50,"price":"$5.35300","currency":"USD"},{"qty":100,"price":"$5.08540","currency":"USD"},{"qty":250,"price":"$4.55004","currency":"USD"},{"qty":500,"price":"$4.28240","currency":"USD"},{"qty":1000,"price":"$3.74710","currency":"USD"},{"qty":2500,"price":"$3.55974","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/cae8b3a967cd7743271e0a88850ee978.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the mating connector for FX8C-140P-SV(91)?","answer":"The FX8C-140P-SV(91) mates with the matching FunctionMax FX8C receptacle (the female counterpart in the same series). The mated stack height — 5 mm or 10 mm — is set by which receptacle variant is chosen, not by the header itself."},{"question":"Is FX8C-140P-SV(91) RoHS compliant?","answer":"Yes, the FX8C-140P-SV(91) is ROHS3 compliant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/FX8C-140P-SV~191~2","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/hirose-electric-co-ltd/FX8C-140P-SV~191~2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:46:37.382Z","lastPublished":"2026-07-22T19:46:37.382Z","indexable":true}}