{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DF12E(4.0)-40DP-0.5V(81)","brand":"Hirose Electric Co Ltd","brandSlug":"hirose-electric-co-ltd","productSlug":"DF12E~14.0~2-40DP-0.5V~181~2","canonicalUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/DF12E~14.0~2-40DP-0.5V~181~2","factsUrl":"https://icsourcedirect.com/api/mcp/products/DF12E(4.0)-40DP-0.5V(81)","rawCanonicalId":null},"summary":{"shortDescription":"Hirose DF12 series, 40-position header with outer shroud contacts, 0.50mm pitch, 4mm mated stacking height, gold-plated contacts, surface mount, tape and reel. Obsolete — quoted to order against the BOM line.","salesMarkdown":"## 40-position, 0.50mm-pitch mezzanine header — 4mm stack height The DF12E(4.0)-40DP-0.5V(81): This is a Hirose DF12 series header with outer shroud contacts, 40 positions in two rows on a 0.50mm pitch. ## What the 4mm stack height and 0.50mm pitch mean for your board The 0.50mm pitch (0.020\") forces a fine-line PCB fan-out — expect at least two signal layers to escape the inner rows cleanly. The two-row arrangement with 40 total positions gives 20 per row, which balances density against routing complexity. Gold flash (8.00µin) is a signal-grade finish, not high-cycle — plan for a few hundred mate/unmate cycles, not thousands.","metaTitle":"DF12E(4.0)-40DP-0.5V(81) Obsolete Hirose Board-to-Board","metaDescription":"Hirose DF12E(4.0)-40DP-0.5V(81) header, 40 positions, 0.50mm pitch, 4mm stack height, gold contacts. Obsolete — sourced per 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":"Header, Outer Shroud Contacts","Contact Finish":"Gold","Number of Rows":"2","Product Status":"Obsolete","lifecycle_stage":"unknown","Height Above Board":"0.130\\\" (3.30mm)","Number of Positions":"40","Mated Stacking Heights":"4mm","Contact Finish Thickness":"8.00µin (0.203µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.8300","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/801352e576480b4c19254a5dc0f8f8a7.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/DF12E(4.0)-40DP-0.5V(81)/alternatives.json"},"ai":{"faq":[{"question":"What is the replacement for DF12E(4.0)-40DP-0.5V(81)?","answer":"Hirose has not published a direct successor for this order code. A cross-reference search against your exact board stack-up is needed — request a quote and we'll check available alternatives."},{"question":"How can I order DF12E(4.0)-40DP-0.5V(81)?","answer":"This obsolete part is sourced per RFQ against your BOM quantity."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/DF12E~14.0~2-40DP-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/DF12E~14.0~2-40DP-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}}