{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DF12C-40DS-0.5V(81)","brand":"Hirose Electric Co Ltd","brandSlug":"hirose-electric-co-ltd","productSlug":"DF12C-40DS-0.5V~181~2","canonicalUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/DF12C-40DS-0.5V~181~2","factsUrl":"https://icsourcedirect.com/api/mcp/products/DF12C-40DS-0.5V(81)","rawCanonicalId":null},"summary":{"shortDescription":"Hirose DF12 series receptacle, center strip contacts, 40 positions, 0.020\" (0.50mm) pitch, 2 rows, SMT, gold 8.00µin contacts, 2.70mm above board, mated stacking heights 3.5mm/4mm/5mm.","salesMarkdown":"## Board-to-Board Mezzanine Connector for Tight Stack Heights The Hirose DF12C-40DS-0.5V(81) is a 40-position, 2-row receptacle with center strip contacts on a 0.020\" (0.50mm) pitch. The connector body sits 0.106\" (2.70mm) above the board, and the same part supports three mated stacking heights — 3.5mm, 4mm, and 5mm — depending on which mating header you pair it with. That flexibility means one receptacle on the BOM can serve multiple board-spacing variants in the same assembly. It packs 40 signal lines into a compact footprint, but it also demands a PCB fab capable of routing between those pads — standard 0.5mm pitch design rules apply. This is an SMT receptacle — it reflows onto the top side of one board. The mating half is a DF12 series header (the pin side) that sits on the opposing board. The three supported mated stacking heights (3.5mm, 4mm, 5mm) come from choosing the corresponding header height variant. The center strip contact arrangement means the mating interface is a row of flat contacts along the centerline of the connector body, not along the edges — this keeps the overall width narrow for dense layouts. ## Sourcing the DF12C-40DS-0.5V(81) Now Because this part is obsolete, the procurement path is the independent surplus and broker channel.","metaTitle":"Hirose DF12C-40DS-0.5V(81), 40 Pos 0.50mm Pitch Receptacle","metaDescription":"Hirose DF12C-40DS-0.5V(81) 40-position 0.50mm pitch receptacle, center strip contacts, SMT, gold plating. Obsolete — sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Board-to-Board Connectors"],"specifications":{"Mfr":"Hirose Electric Co Ltd","Pitch":"0.020\\\" (0.50mm)","Series":"DF12","Package":"Tape & Reel (TR)","Features":"-","Mounting Type":"Surface Mount","Connector Type":"Receptacle, Center Strip Contacts","Contact Finish":"Gold","Number of Rows":"2","Product Status":"Obsolete","lifecycle_stage":"unknown","Height Above Board":"0.106\\\" (2.70mm)","Number of Positions":"40","Mated Stacking Heights":"3.5mm, 4mm, 5mm","Contact Finish Thickness":"8.00µin (0.203µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/801352e576480b4c19254a5dc0f8f8a7.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy the DF12C-40DS-0.5V(81)?","answer":"The DF12C-40DS-0.5V(81) is obsolete and no longer in factory production. It is available through independent distribution on a quoted-to-order basis — submit an RFQ with your quantity and target lead time for current pricing and availability."},{"question":"Is the DF12C-40DS-0.5V(81) obsolete?","answer":"Yes, the DF12C-40DS-0.5V(81) is officially listed as Obsolete by Hirose. Production has ended, and the part is only available through the surplus channel while stock lasts."},{"question":"What is the mated stacking height for the DF12C-40DS-0.5V(81)?","answer":"The DF12C-40DS-0.5V(81) supports three mated stacking heights: 3.5mm, 4mm, and 5mm. The actual height depends on which DF12 series header you pair it with."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/DF12C-40DS-0.5V~181~2","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/DF12C-40DS-0.5V~181~2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:34:25.888Z","lastPublished":"2026-07-20T14:34:25.888Z","indexable":true}}