{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DF40B-50DS-0.4V(51)","brand":"Hirose Electric Co Ltd","brandSlug":"hirose-electric-co-ltd","productSlug":"DF40B-50DS-0.4V~151~2","canonicalUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/DF40B-50DS-0.4V~151~2","factsUrl":"https://icsourcedirect.com/api/mcp/products/DF40B-50DS-0.4V(51)","rawCanonicalId":null},"summary":{"shortDescription":"Hirose DF40 series, 50 position receptacle, center strip contacts, 0.016\" (0.40mm) pitch, surface mount, gold plating, 1.5mm mated stack height, solder retention feature.","salesMarkdown":"The Hirose DF40B-50DS-0.4V(51) is a 50-position receptacle with center strip contacts from the DF40 series, a family of fine-pitch board-to-board connectors designed for compact, parallel-stacked PCBs. The 0.40mm pitch and 1.5mm mated stacking height place it squarely in the mezzanine interconnect space for handheld devices, camera modules, and other dense electronics where every millimeter of z-height is budgeted. It is the receptacle half — the board-mount side that receives the mating header — and carries gold-plated contacts on two rows. At 0.40mm pitch, this is a fine-pitch part that demands a controlled SMT process — no hand-soldering, no rework without a hot-air station and a steady hand. If your assembly has a 1.6mm board pair, the total stack with this connector lands at about 4.7mm, which fits inside a typical 5mm housing gap. The gold contact finish is 2.00µin (0.051µm) thick — a light flash. If your application requires dozens of mate-unmate cycles, look for a heavier gold option in the DF40 family. For a one-time board stack that stays mated, this plating is perfectly fine and keeps the cost down. It is in normal production and available through the independent distribution channel.","metaTitle":"Hirose DF40B-50DS-0.4V(51) Receptacle, 50 Pos, 0.40mm Pitch","metaDescription":"Hirose DF40B-50DS-0.4V(51) receptacle, 50 positions, 0.40mm pitch, 1.5mm stack height, SMT, 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":"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":"50","Mated Stacking Heights":"1.5mm","Contact Finish Thickness":"2.00µin (0.051µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5439","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/aec32b0d4a5f742c03de5786d68c7607.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy DF40B-50DS-0.4V(51) available via RFQ confirmation?","answer":"DF40B-50DS-0.4V(51) is sourced to order through independent distribution. Submit an RFQ for current availability and pricing — stock levels and lead time are confirmed at quote time."},{"question":"What is the mated stacking height of DF40B-50DS-0.4V(51)?","answer":"The mated stacking height is 1.5mm. This is the distance between the two PCBs when the receptacle is mated with its matching header."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/DF40B-50DS-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/DF40B-50DS-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}}