{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DF40TC(3.5)-20DS-0.4V(51)","brand":"Hirose Electric Co Ltd","brandSlug":"hirose-electric-co-ltd","productSlug":"DF40TC~13.5~2-20DS-0.4V~151~2","canonicalUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/DF40TC~13.5~2-20DS-0.4V~151~2","factsUrl":"https://icsourcedirect.com/api/mcp/products/DF40TC(3.5)-20DS-0.4V(51)","rawCanonicalId":null},"summary":{"shortDescription":"Hirose DF40T series receptacle, center strip contacts, 20 positions, 2 rows, 0.016\" (0.40mm) pitch, surface mount, gold contact finish, 3.5mm mated stacking height, tape and reel.","salesMarkdown":"## Board-to-Board Mezzanine Stacking with the DF40TC The Hirose DF40TC(3.5)-20DS-0.4V(51) is a 20-position, 2-row receptacle with center strip contacts, part of the DF40T series of fine-pitch board-to-board mezzanine connectors. It is designed for parallel PCB stacking at a fixed 3.5 mm mated height, with a 0.40 mm pitch that packs 20 signal lines into a compact footprint. The gold-plated contacts and SMT termination suit high-density digital interfaces where signal integrity and reliable mating are critical — think camera modules, display drivers, or compact processor boards in handheld or portable equipment. ## Stack Height and Footprint — What the 3.5 mm and 0.40 mm Pitch Mean The 20 positions in two rows give a 10-per-row layout; the receptacle's center strip contacts are mirrored on the mating plug, so the board layout must match the plug's footprint exactly. ## SMT Assembly — Pick-and-Place and Solder Retention ## Contact Finish — Gold Flash for Limited-Cycle Mezzanine Duty In a mezzanine stack that is mated once at board assembly and rarely unmated, this is adequate. For applications requiring frequent reconnection or hot-plug duty, a thicker gold plating would be needed; this connector is designed for a fixed, low-cycle interconnect.","metaTitle":"Hirose DF40TC(3.5)-20DS-0.4V(51) Receptacle, 20 Pos","metaDescription":"Hirose DF40TC(3.5)-20DS-0.4V(51) 20-position receptacle, 0.40 mm pitch, 3.5 mm stacking height. Gold-plated contacts, SMT, active production.","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":"DF40T","Package":"Tape & Reel (TR)","Features":"Pick and Place, 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":"0.134\\\" (3.40mm)","Number of Positions":"20","Mated Stacking Heights":"3.5mm","Contact Finish Thickness":"1.97µin (0.050µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4848","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/ee353916a52fdc0d2aa13cbbf97c384a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the stacking height of DF40TC(3.5)-20DS-0.4V(51)?","answer":"The mated stacking height is 3.5 mm, which is the spacing between the two PCBs when the connector pair is fully mated."},{"question":"Where can I buy DF40TC(3.5)-20DS-0.4V(51) and what is the lead time?","answer":"This part is sourced to order against your RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/DF40TC~13.5~2-20DS-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/DF40TC~13.5~2-20DS-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}}