{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DF40TC(4.0)-20DS-0.4V(58)","brand":"Hirose Electric Co Ltd","brandSlug":"hirose-electric-co-ltd","productSlug":"DF40TC~14.0~2-20DS-0.4V~158~2","canonicalUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/DF40TC~14.0~2-20DS-0.4V~158~2","factsUrl":"https://icsourcedirect.com/api/mcp/products/DF40TC(4.0)-20DS-0.4V(58)","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, 4mm mated stacking height.","salesMarkdown":"The Hirose DF40TC(4.0)-20DS-0.4V(58) is a 20-position receptacle from the DF40T series, designed for board-to-board mezzanine stacking. It uses a 0.40mm pitch and a center strip contact arrangement across two rows, giving you a compact signal interconnect for tight PCB layouts. The 4mm mated stacking height is fixed by the (4.0) designation in the order code — this part mates with a matching DF40T header to create a precise 4mm gap between boards. ## Footprint and Assembly — What the 0.40mm Pitch Means At 0.40mm pitch, the footprint is dense — each contact sits on a 0.40mm centerline, which drives the trace-and-space capability of your PCB. You need a fabricator comfortable with fine-pitch SMT routing; the solder pads are small and the keep-out zone between rows is tight. The connector includes pick-and-place features and solder retention aids, so it handles reflow soldering without tombstoning. Surface mount termination means no through-holes, which frees up routing channels on inner layers directly under the connector. The DF40T series has no official cross-reference or second-source; the mating header must be a Hirose DF40T series part with the matching (4.0) stack height code.","metaTitle":"Hirose DF40TC(4.0)-20DS-0.4V(58) Receptacle, 0.40mm Pitch","metaDescription":"Hirose DF40T series receptacle, 20 positions, 0.40mm pitch, 4mm stacking height. Gold-plated contacts, SMT with pick-and-place. Active, RoHS. Sourced to order.","metaKeywords":null},"attributes":{"series":"DF40T","packageCase":null,"mountingType":null,"rohsStatus":"RoHS Compliant","productStatus":"Active","categoryPath":["Board-to-Board Connectors","Mezzanine & Stacking Connectors"],"specifications":{"Mfr":"Hirose Electric Co Ltd","Pitch":"0.016\\\" (0.40mm)","Series":"DF40T","Package":"Tape & Reel (TR) Cut Tape (CT)","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":"20","Mated Stacking Heights":"4mm","Contact Finish Thickness":"1.97µin (0.050µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.8333","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.53000","currency":"USD"},{"qty":1,"price":"$1.50000","currency":"USD"},{"qty":10,"price":"$1.30700","currency":"USD"},{"qty":10,"price":"$1.32900","currency":"USD"},{"qty":25,"price":"$1.27280","currency":"USD"},{"qty":25,"price":"$1.25120","currency":"USD"},{"qty":50,"price":"$1.22320","currency":"USD"},{"qty":50,"price":"$1.24440","currency":"USD"},{"qty":100,"price":"$1.18780","currency":"USD"},{"qty":100,"price":"$1.16760","currency":"USD"},{"qty":250,"price":"$1.05640","currency":"USD"},{"qty":250,"price":"$1.07464","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/ee353916a52fdc0d2aa13cbbf97c384a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can the DF40TC(4.0)-20DS-0.4V(58) be used with a 5mm stacking height header?","answer":"No. The (4.0) in the order code fixes the mated stacking height at 4mm. A header designed for a 5mm stack height will not mate correctly with this receptacle. Use the DF40T series variant with the matching stack height code."},{"question":"Where can I buy DF40TC(4.0)-20DS-0.4V(58) and what is the lead time?","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~14.0~2-20DS-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/DF40TC~14.0~2-20DS-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":"2026-08-11T15:52:26.615Z","lastPublished":"2026-08-11T15:52:26.615Z","indexable":true}}