{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DF12D(5.0)-40DP-0.5V(81)","brand":"Hirose Electric Co Ltd","brandSlug":"hirose-electric-co-ltd","productSlug":"DF12D~15.0~2-40DP-0.5V~181~2","canonicalUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/DF12D~15.0~2-40DP-0.5V~181~2","factsUrl":"https://icsourcedirect.com/api/mcp/products/DF12D(5.0)-40DP-0.5V(81)","rawCanonicalId":null},"summary":{"shortDescription":"Hirose DF12 series header, outer shroud contacts, 40 positions, 2 rows, 0.020\" (0.50mm) pitch, 5mm mated stack height, surface mount, gold contact finish.","salesMarkdown":"## 0.50 mm Pitch Mezzanine Header, 40 Positions, 5 mm Stack The Hirose DF12D(5.0)-40DP-0.5V(81) is a 40-position header from the DF12 series, designed for board-to-board mezzanine stacking. The connector is surface-mount and includes an integrated board guide to help locate the mating receptacle during assembly. Hirose has marked the DF12D(5.0)-40DP-0.5V(81) as Obsolete. This means the factory no longer manufactures it as a standard catalog item. The 0.50 mm pitch drives the PCB footprint: each signal pad sits on a 0.50 mm grid, which limits trace escape width between pads to roughly 0.20 mm on outer layers with standard PCB fab capabilities. The 5 mm mated stack height sets the standoff between the two boards — check that the mating receptacle (the DF12 series receptacle half) also specifies a 5 mm stack height to achieve the correct mated dimension. The board guide feature adds a pair of alignment posts that engage before the contacts, reducing the risk of stubbing the fine-pitch terminals during manual or automated assembly. ## Contact Finish and Duty The outer shroud contacts provide a ground-return path and some EMI containment around the signal pins, though the primary signal integrity benefit is the controlled impedance environment the shroud creates between the two boards.","metaTitle":"Hirose DF12D(5.0)-40DP-0.5V(81) Header, 40 Pos, 0.50mm Pitch","metaDescription":"Hirose DF12 series 40-position header, 0.50mm pitch, 5mm stack height. Gold-plated outer shroud contacts, SMT. 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) Cut Tape (CT)","Features":"Board Guide","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":"0.169\\\" (4.30mm)","Number of Positions":"40","Mated Stacking Heights":"5mm","Contact Finish Thickness":"-"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.0500","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/801352e576480b4c19254a5dc0f8f8a7.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/DF12D(5.0)-40DP-0.5V(81)/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy DF12D(5.0)-40DP-0.5V(81) available via RFQ confirmation?","answer":"The DF12D(5.0)-40DP-0.5V(81) is obsolete from Hirose, so it is not stocked as a current-production item. Submit a request for current availability and pricing."},{"question":"Is DF12D(5.0)-40DP-0.5V(81) obsolete?","answer":"Yes, Hirose has listed the DF12D(5.0)-40DP-0.5V(81) as Obsolete. The factory no longer manufactures it as a standard catalog item."},{"question":"What is the mating height for DF12D(5.0)-40DP-0.5V(81)?","answer":"The mated stacking height for this header is 5mm when paired with the matching DF12 series receptacle. The connector itself has a height above board of 0.169\" (4.30mm) before mating."},{"question":"Does DF12D(5.0)-40DP-0.5V(81) have a board guide?","answer":"Yes, the connector includes a board guide feature — alignment posts that engage before the contacts to prevent stubbing during assembly."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/DF12D~15.0~2-40DP-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/DF12D~15.0~2-40DP-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}}