{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DF40B-10DS-0.4V(51)","brand":"Hirose Electric Co Ltd","brandSlug":"hirose-electric-co-ltd","productSlug":"DF40B-10DS-0.4V~151~2","canonicalUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/DF40B-10DS-0.4V~151~2","factsUrl":"https://icsourcedirect.com/api/mcp/products/DF40B-10DS-0.4V(51)","rawCanonicalId":null},"summary":{"shortDescription":"Hirose DF40 Series, 0.016\" (0.40mm) Pitch, 10 Position, 2 Row, Receptacle, Center Strip Contacts, Surface Mount, Gold, 0.057\" (1.45mm) Height Above Board.","salesMarkdown":"## Board-Stacking Receptacle for Tight Z-Budget Designs The Hirose DF40B-10DS-0.4V(51) is a 10-position receptacle from the DF40 series of board-to-board mezzanine connectors. It uses a 0.016\" (0.40mm) pitch across two rows, with a mated stacking height of 1.5mm — the tightest vertical profile in the DF40 family. This makes it a fit for handheld or portable devices where board spacing is at a premium. The gold-plated center strip contacts are suited for signal-level current, and the solder retention feature keeps the part anchored during reflow. ## What the 0.40mm Pitch and 1.5mm Stack Mean for Layout The 0.016\" (0.40mm) pitch sets a tight trace-and-space requirement on the PCB — expect 0.20mm lines and 0.20mm clearances between pads for a two-layer board. The 1.5mm mated stacking height means the opposing board sits 1.45mm above the receptacle's mounting surface, so the total z-height from the bottom board to the top board is the sum of both connector heights plus the air gap. Gold contact finish at 2.00µin (0.051µm) is a signal-grade plating; it handles the mating cycles typical of a battery or display interconnect without the cost of a thicker hard-gold layer. ## Position Count and Series Variants The DF40B-10DS-0.4V(51) carries 10 positions. For a different circuit count, the DF40B-12DS-0.4V(58) offers 12 positions at the same 0.016\" (0.40mm) pitch and 1.5mm stacking height — the choice is strictly the number of signal lines needed. If shielding is required, the DF40GB(1.5)-10DS-0.4V(58) adds a metal shield over the same 10-position layout, though it changes the footprint slightly and must be paired with a shielded mating header.","metaTitle":"Hirose DF40B-10DS-0.4V(51) 10-Position 0.40mm Pitch","metaDescription":"Hirose DF40B-10DS-0.4V(51) 10-position 0.40mm pitch receptacle, 1.5mm stacking height, gold contacts, RoHS compliant. Active production, quoted to order.","metaKeywords":null},"attributes":{"series":"DF40","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":"DF40","Package":"Tape & Reel (TR) Cut Tape (CT)","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":"10","Mated Stacking Heights":"1.5mm","Contact Finish Thickness":"2.00µin (0.051µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5700","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.57000","currency":"USD"},{"qty":10,"price":"$0.49600","currency":"USD"},{"qty":25,"price":"$0.45320","currency":"USD"},{"qty":50,"price":"$0.42660","currency":"USD"},{"qty":100,"price":"$0.40880","currency":"USD"},{"qty":250,"price":"$0.37328","currency":"USD"},{"qty":500,"price":"$0.35552","currency":"USD"},{"qty":1000,"price":"$0.29330","currency":"USD"},{"qty":2500,"price":"$0.26664","currency":"USD"},{"qty":5000,"price":"$0.25775","currency":"USD"},{"qty":10000,"price":"$0.23998","currency":"USD"},{"qty":15000,"price":"$0.23642","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/aec32b0d4a5f742c03de5786d68c7607.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the mated stacking height of DF40B-10DS-0.4V(51)?","answer":"The mated stacking height is 1.5mm, which defines the total z-height between the two PCBs when mated with the corresponding DF40 series header."},{"question":"Is DF40B-10DS-0.4V(51) RoHS compliant?","answer":"Yes, the DF40B-10DS-0.4V(51) is RoHS Compliant."},{"question":"Does DF40B-10DS-0.4V(51) have solder retention?","answer":"Yes, the part includes a solder retention feature that holds the connector in place during SMT reflow, reducing the risk of tombstoning or misalignment."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/DF40B-10DS-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-10DS-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":"2026-07-22T19:46:37.382Z","lastPublished":"2026-07-22T19:46:37.382Z","indexable":true}}