{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DF40TC(4.0)-40DS-0.4V(51)","brand":"Hirose Electric Co Ltd","brandSlug":"hirose-electric-co-ltd","productSlug":"DF40TC~14.0~2-40DS-0.4V~151~2","canonicalUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/DF40TC~14.0~2-40DS-0.4V~151~2","factsUrl":"https://icsourcedirect.com/api/mcp/products/DF40TC(4.0)-40DS-0.4V(51)","rawCanonicalId":null},"summary":{"shortDescription":"Hirose DF40T series, DF40TC(4.0)-40DS-0.4V(51), 40 position receptacle, center strip contacts, 0.40mm pitch, dual row, SMT, gold flash, 4mm mated stack height, Tape & Reel.","salesMarkdown":"The Hirose DF40TC(4.0)-40DS-0.4V(51) is a 40-position receptacle from the DF40T series, designed for board-to-board mezzanine stacking. It uses center strip contacts on a 0.016\" (0.40mm) pitch in a dual-row layout, with a mated stacking height of 4mm. The connector is surface-mount and comes in Tape & Reel packaging, with pick-and-place and solder retention features for automated assembly. The 0.40mm pitch is the tightest constraint for the board layout engineer — it forces finer trace widths and tighter via escape routing compared to a 0.50mm or 0.80mm pitch part. The dual-row arrangement at this pitch means the footprint is narrow, but the routing channels between pads are tight — expect to use micro-vias or blind vias to escape the inner rows. ## SMT Assembly and Packaging The connector is packaged in Tape & Reel (TR), which is the standard feed for high-speed pick-and-place lines. No manual handling or tray loading is needed — it feeds straight off the reel. Confirm the feeder pocket pitch on your placement machine can handle the 0.40mm pitch component body width.","metaTitle":"Hirose DF40TC(4.0)-40DS-0.4V(51) 40 Position 0.4mm Pitch","metaDescription":"Hirose DF40TC(4.0)-40DS-0.4V(51) receptacle, 40 positions, 0.40mm pitch, 4mm mated stack height. Gold contacts, SMT, Tape & Reel.","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":"0.154\\\" (3.90mm)","Number of Positions":"40","Mated Stacking Heights":"4mm","Contact Finish Thickness":"1.97µin (0.050µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.8526","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/ee353916a52fdc0d2aa13cbbf97c384a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the mated stacking height for DF40TC(4.0)-40DS-0.4V(51)?","answer":"The mated stacking height is 4mm. This is the distance between the two PCBs when the receptacle is mated with the corresponding DF40T header of the same stack height variant."},{"question":"Is DF40TC(4.0)-40DS-0.4V(51) compatible with the DF40T series?","answer":"Yes, this connector is a member of the DF40T series. It mates with the corresponding DF40T header that has the same 0.40mm pitch, 40 positions, and 4mm mated stack height designation."},{"question":"Where can I buy DF40TC(4.0)-40DS-0.4V(51) in tape and reel packaging?","answer":"This part is sourced to order against your BOM quantity."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/DF40TC~14.0~2-40DS-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~14.0~2-40DS-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}}