{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DF40B-12DS-0.4V(58)","brand":"Hirose Electric Co Ltd","brandSlug":"hirose-electric-co-ltd","productSlug":"DF40B-12DS-0.4V~158~2","canonicalUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/DF40B-12DS-0.4V~158~2","factsUrl":"https://icsourcedirect.com/api/mcp/products/DF40B-12DS-0.4V(58)","rawCanonicalId":null},"summary":{"shortDescription":"Hirose DF40 series, DF40B-12DS-0.4V(58) receptacle, center strip contacts, 12 positions, 0.016\" (0.40mm) pitch, dual row, surface mount, gold contact finish, 0.057\" (1.45mm) height above board, solder retention features.","salesMarkdown":"## Board-to-Board Stacking with the DF40B-12DS-0.4V(58) The Hirose DF40B-12DS-0.4V(58) is a 12-position receptacle from the DF40 series, designed for parallel board-to-board stacking. The connector sits 0.057\" (1.45mm) above the board and mates to a stack height of 1.5mm — a tight z-budget for compact handheld or portable devices where every tenth of a millimeter counts. At 0.40mm pitch, the DF40B-12DS-0.4V(58) demands tight trace routing between pads — expect to run single traces between vias on the inner layers. The 1.5mm mated stack height is the key dimension for mezzanine spacing; if your board-to-board gap needs to be taller, the DF40B(2.0)-12DS-0.4V(58) sibling uses the same 12-position layout but with a 0.077\" (1.95mm) height above board, giving a taller stack. For fewer circuits, the DF40B-10DS-0.4V(58) drops to 10 positions at the same 0.40mm pitch and 1.45mm height — a straight position-count swap if your BOM line needs fewer connections. No official second-source or direct cross-reference exists; the DF40 series is Hirose-specific, so stick with the listed order code for the BOM.","metaTitle":"Hirose DF40B-12DS-0.4V(58) Receptacle, 12 Pos, 0.40mm Pitch","metaDescription":"Hirose DF40B-12DS-0.4V(58) receptacle, 12 positions, 0.40mm pitch, 1.45mm height. Gold contacts, SMT, solder retention. Active, ROHS3. Sourced to order.","metaKeywords":null},"attributes":{"series":"DF40","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Board-to-Board Connectors","Mezzanine & Stacking Connectors"],"specifications":{"Mfr":"Hirose Electric Co Ltd","Pitch":"0.016\\\" (0.40mm)","Series":"DF40","Package":"Tape & Reel (TR) Cut Tape (CT)","Features":"Solder Retention","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":"0.057\\\" (1.45mm)","Base Product Number":"DF40B","Number of Positions":"12","Mated Stacking Heights":"1.5mm","Contact Finish Thickness":"-"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.8200","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.82000","currency":"USD"},{"qty":10,"price":"$0.69300","currency":"USD"},{"qty":25,"price":"$0.66440","currency":"USD"},{"qty":50,"price":"$0.65040","currency":"USD"},{"qty":100,"price":"$0.62220","currency":"USD"},{"qty":250,"price":"$0.56560","currency":"USD"},{"qty":500,"price":"$0.50904","currency":"USD"},{"qty":1000,"price":"$0.45248","currency":"USD"},{"qty":2000,"price":"$0.42420","currency":"USD"},{"qty":3000,"price":"$0.41006","currency":"USD"},{"qty":5000,"price":"$0.39592","currency":"USD"},{"qty":10000,"price":"$0.37612","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/aec32b0d4a5f742c03de5786d68c7607.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy DF40B-12DS-0.4V(58) and how is it quoted?","answer":"Submit a request for your target quantity and we confirm availability and current pricing at quote time."},{"question":"What is the mated stacking height of DF40B-12DS-0.4V(58)?","answer":"The mated stacking height is 1.5mm, with the receptacle sitting 0.057\" (1.45mm) above the board surface."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/DF40B-12DS-0.4V~158~2","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/DF40B-12DS-0.4V~158~2 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}}