{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"FX8-140S-SV(21)","brand":"Hirose Electric Co Ltd","brandSlug":"hirose-electric-co-ltd","productSlug":"FX8-140S-SV~121~2","canonicalUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/FX8-140S-SV~121~2","factsUrl":"https://icsourcedirect.com/api/mcp/products/FX8-140S-SV(21)","rawCanonicalId":null},"summary":{"shortDescription":"Hirose FunctionMax™ FX8 receptacle, center strip contacts, 140 positions, 0.024\" (0.60mm) pitch, dual-row, SMT, gold contact finish, supports 3mm and 4mm mated stacking heights.","salesMarkdown":"## Board-Stacking Selection: 140 Circuits at 0.60mm Pitch Mated stacking heights are fixed at 3mm and 4mm, so the gap between parallel PCBs is determined by this choice — no shimming or standoff adjustment after the fact. The SMT termination suits reflow assembly, but the 140 circuits mean the paste stencil and reflow profile must be dialed in for the dense pad array. ## Stack Height and Footprint Constraints When mated with the corresponding FX8 header, the total stack between boards is either 3mm or 4mm — the header height is the complement. This is a hard constraint: if your enclosure or card cage has a fixed gap, verify which stack height your mating header provides. The board guide feature is not cosmetic — it aligns the two halves during mating and prevents the fine-pitch contacts from stubbing or bending. Without it, the 0.60mm pitch leaves almost no margin for misalignment during blind mating.","metaTitle":"Hirose FX8-140S-SV(21) FunctionMax™ Receptacle, 140 Pos","metaDescription":"Hirose FX8-140S-SV(21) FunctionMax™ FX8 receptacle, 140 positions, 0.60mm pitch, SMT, gold contacts, ROHS3. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":"FunctionMax™ FX8","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™ FX8","Package":"Tube","Features":"Board Guide","Mounting Type":"Surface Mount","Connector Type":"Receptacle, Center Strip Contacts","Contact Finish":"Gold","Number of Rows":"2","Product Status":"Active","lifecycle_stage":"unknown","Height Above Board":"0.089\\\" (2.26mm)","Base Product Number":"FX8","Number of Positions":"140","Mated Stacking Heights":"3mm, 4mm","Contact Finish Thickness":"-"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.1100","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$6.11000","currency":"USD"},{"qty":10,"price":"$5.54800","currency":"USD"},{"qty":25,"price":"$5.25520","currency":"USD"},{"qty":50,"price":"$5.13280","currency":"USD"},{"qty":100,"price":"$4.88840","currency":"USD"},{"qty":250,"price":"$4.27736","currency":"USD"},{"qty":500,"price":"$4.15514","currency":"USD"},{"qty":1000,"price":"$3.54409","currency":"USD"},{"qty":2500,"price":"$3.29967","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/6be5391f9f5173fb13fd2362c80670d8.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What stacking heights does FX8-140S-SV(21) support?","answer":"The FX8-140S-SV(21) supports mated stacking heights of 3mm and 4mm when paired with the corresponding FX8 header. The 0.089\" (2.26mm) height above board is the receptacle's Z-height contribution."},{"question":"Is FX8-140S-SV(21) RoHS compliant?","answer":"Yes, the FX8-140S-SV(21) is ROHS3 compliant, meeting the current EU restriction of hazardous substances directive."},{"question":"Are there equivalents or replacements for FX8-140S-SV(21)?","answer":"The FX8-140S-SV(22) and FX8-140S-SV(23) are functionally identical — same 140 positions, 0.60mm pitch, gold contacts, and 3mm/4mm stack heights — differing only in packaging (Tape & Reel options). The base FX8-140S-SV is the tray-packaged equivalent. All are active and ROHS3 compliant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/FX8-140S-SV~121~2","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/FX8-140S-SV~121~2 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}}