{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DF40C-34DS-0.4V(51)","brand":"Hirose Electric Co Ltd","brandSlug":"hirose-electric-co-ltd","productSlug":"DF40C-34DS-0.4V~151~2","canonicalUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/DF40C-34DS-0.4V~151~2","factsUrl":"https://icsourcedirect.com/api/mcp/products/DF40C-34DS-0.4V(51)","rawCanonicalId":null},"summary":{"shortDescription":"Hirose DF40 series receptacle, center strip contacts, 34 positions, 0.016\" (0.40mm) pitch, dual row, surface mount, gold contact finish, 1.5mm mated stacking height.","salesMarkdown":"The Hirose DF40C-34DS-0.4V(51) is a 34-position receptacle from the DF40 series, designed for board-to-board mezzanine stacking. ## Pitch and Footprint — The Board Layout Constraint At this pitch, trace escape between pads requires fine-line routing — typically 0.10mm to 0.12mm traces with 0.10mm clearance — and micro-vias or laser-drilled vias under the component. The 1.5mm stacking height sets the z-axis budget: the opposing board must sit exactly 1.5mm above the host board, with no taller components in the keep-out zone under the mezzanine pair. ## Contact Plating and Signal Duty Gold contact finish at 2.00µin thickness is a signal-grade plating. It provides a stable, low-resistance interface for repeated mating cycles in low-current signal paths — think data lines, control signals, or low-power I/O. This is not a power-contact plating; the thin gold layer is optimised for corrosion resistance and cycle life, not bulk current transfer. For a 34-position connector at this pitch, the current per contact will be derated well below what a thicker gold or tin plating would carry in a larger format. ## Comparing the (51) and (58) Suffix Variants The DF40C-34DS-0.4V(58) is electrically and mechanically identical to the (51) variant — same pitch, same 34 positions, same 1.5mm stacking height, same gold plating. The only difference is packaging: the (51) ships in Tape & Reel and Cut Tape, while the (58) adds Digi-Reel as an option. For the board layout engineer or the sourcing desk, there is no design decision between them — the choice is purely a procurement preference based on reel quantity and reel type.","metaTitle":"Hirose DF40C-34DS-0.4V(51), 34 Pos 0.40mm Pitch Receptacle","metaDescription":"Hirose DF40C-34DS-0.4V(51) receptacle, 34 positions, 0.40mm pitch, gold contacts, 1.5mm stacking height. Active production, ROHS3 compliant.","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":"-","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":"DF40C","Number of Positions":"34","Mated Stacking Heights":"1.5mm","Contact Finish Thickness":"2.00µin (0.051µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.8800","priceTiers":[{"qty":1,"price":"$0.88000","currency":"USD"},{"qty":10,"price":"$0.74200","currency":"USD"},{"qty":25,"price":"$0.71200","currency":"USD"},{"qty":50,"price":"$0.69680","currency":"USD"},{"qty":100,"price":"$0.66660","currency":"USD"},{"qty":250,"price":"$0.60600","currency":"USD"},{"qty":500,"price":"$0.54540","currency":"USD"},{"qty":1000,"price":"$0.48480","currency":"USD"},{"qty":2500,"price":"$0.43935","currency":"USD"},{"qty":5000,"price":"$0.42420","currency":"USD"},{"qty":10000,"price":"$0.40299","currency":"USD"},{"qty":15000,"price":"$0.39390","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/aec32b0d4a5f742c03de5786d68c7607.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/DF40C-34DS-0.4V(51)/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy DF40C-34DS-0.4V(51) and get a price?","answer":"The DF40C-34DS-0.4V(51) is sourced to order through independent distribution. Submit an RFQ for current availability and pricing — both are confirmed at quote time."},{"question":"What is the mated stacking height of DF40C-34DS-0.4V(51)?","answer":"The mated stacking height is 1.5mm, which sets the board-to-board gap for the mezzanine pair."},{"question":"What is the pitch of DF40C-34DS-0.4V(51)?","answer":"The contact pitch is 0.016\" (0.40mm), which dictates the PCB footprint and routing density required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/DF40C-34DS-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/DF40C-34DS-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}}