{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DF40C-12DP-0.4V(51)","brand":"Hirose Electric Co Ltd","brandSlug":"hirose-electric-co-ltd","productSlug":"DF40C-12DP-0.4V~151~2","canonicalUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/DF40C-12DP-0.4V~151~2","factsUrl":"https://icsourcedirect.com/api/mcp/products/DF40C-12DP-0.4V(51)","rawCanonicalId":null},"summary":{"shortDescription":"Hirose DF40 series, DF40C-12DP-0.4V(51) plug, outer shroud contacts, 12 positions, 2 rows, 0.016\" (0.40mm) pitch, surface mount, gold contact finish, tape and reel.","salesMarkdown":"The Hirose DF40C-12DP-0.4V(51) is the 12-position plug half of the DF40 series board-to-board mezzanine connector system. ## Stack height compatibility and board layout The mated stacking height range of 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, and 4mm is the key mechanical spec to check against your PCB-to-PCB spacing. The plug itself sits 0.045\" (1.14mm) above the board — that unmated height matters for clearance under the connector during pick-and-place and for visual inspection of the solder fillets. The 0.40mm pitch is fine enough that the board footprint needs tight routing discipline; the two rows keep the 12 positions in a compact body without pushing the signal density too high for a standard PCB fab.","metaTitle":"Hirose DF40C-12DP-0.4V(51) Plug, 12 Pos, 0.4mm Pitch","metaDescription":"Hirose DF40C-12DP-0.4V(51) 12-position plug, 0.40mm pitch, 1.14mm height above board, gold contacts. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Board-to-Board Connectors"],"specifications":{"Mfr":"Hirose Electric Co Ltd","Pitch":"0.016\\\" (0.40mm)","Series":"DF40","Package":"Tape & Reel (TR)","Features":"Solder Retention","Mounting Type":"Surface Mount","Connector Type":"Plug, Outer Shroud Contacts","Contact Finish":"Gold","Number of Rows":"2","Product Status":"Active","lifecycle_stage":"unknown","Height Above Board":"0.045\\\" (1.14mm)","Base Product Number":"DF40C","Number of Positions":"12","Mated Stacking Heights":"1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm","Contact Finish Thickness":"2.00µin (0.051µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3197","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/aec32b0d4a5f742c03de5786d68c7607.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is DF40C-12DP-0.4V(51) compatible with a 1.5mm stacking height?","answer":"Yes — 1.5mm is the lowest mated stacking height in the supported range, which also includes 2mm, 2.5mm, 3mm, 3.5mm, and 4mm. The DF40C-12DP-0.4V(51) plug mates with the matching DF40C receptacle to achieve any of these heights."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/DF40C-12DP-0.4V~151~2","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/DF40C-12DP-0.4V~151~2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:52:26.615Z","lastPublished":"2026-08-11T15:52:26.615Z","indexable":true}}