{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DF40C(2.0)-12DS-0.4V(58)","brand":"Hirose Electric Co Ltd","brandSlug":"hirose-electric-co-ltd","productSlug":"DF40C~12.0~2-12DS-0.4V~158~2","canonicalUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/DF40C~12.0~2-12DS-0.4V~158~2","factsUrl":"https://icsourcedirect.com/api/mcp/products/DF40C(2.0)-12DS-0.4V(58)","rawCanonicalId":null},"summary":{"shortDescription":"Hirose DF40 series receptacle, 12 positions, 0.40mm pitch, 2 rows, gold contacts, surface mount, 2mm mated stacking height.","salesMarkdown":"## High-Density Mezzanine Receptacle at 0.40mm Pitch The Hirose DF40C(2.0)-12DS-0.4V(58) is a 12-position receptacle from the DF40 series, built for board-to-board mezzanine stacking at a tight 0.40mm pitch. Gold-plated center strip contacts in a dual-row layout give it the corrosion resistance and cycle life needed for internal signal interconnects in compact electronics — think smartphones, tablets, or portable instruments where PCB real estate is scarce. ## What the 0.40mm Pitch and 2mm Stack Height Mean for Layout The 0.40mm pitch is the dominant constraint on the PCB footprint — it forces finer trace routing between pads and tighter keep-out zones around the connector body. At this pitch, the land pattern is small enough that an assembler needs good solder-paste registration; the SMD tails are close together. The 2mm mated stacking height is a fixed z-height: the mating header must also be from the DF40 series with the same (2.0) suffix to achieve that exact gap. A 12-position count means this receptacle serves a 12-signal bus; if your BOM calls for 24 lines, the DF40C(2.0)-24DS-0.4V(58) shares the same pitch and stack height but doubles the circuit count. ## Mating Half and Sibling Comparison This receptacle mates with a DF40 series header of the same (2.0) stacking height suffix — the header part number will carry a similar DF40C(2.0) or DF40B(2.0) base code with the matching 12 positions. The DF40B(2.0)-12DS-0.4V(58) is a direct sibling with the same pitch, positions, and stack height, but adds solder retention features — a detail to check if your board assembly sees vibration or reflow shear forces. The DF40C(2.0)-24DS-0.4V(58) is the 24-position variant for a wider signal bus, otherwise identical in pitch and height.","metaTitle":"Hirose DF40C(2.0)-12DS-0.4V(58) Receptacle, 12 Pos","metaDescription":"Hirose DF40C 12-position receptacle, 0.40mm pitch, 2mm stacking height, gold contacts. Active production — sourced to order against an RFQ.","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":"0.077\\\" (1.95mm)","Base Product Number":"DF40C","Number of Positions":"12","Mated Stacking Heights":"2mm","Contact Finish Thickness":"-"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.8200","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.82000","currency":"USD"},{"qty":10,"price":"$0.69300","currency":"USD"},{"qty":25,"price":"$0.66440","currency":"USD"},{"qty":50,"price":"$0.65040","currency":"USD"},{"qty":100,"price":"$0.62220","currency":"USD"},{"qty":250,"price":"$0.56560","currency":"USD"},{"qty":500,"price":"$0.50904","currency":"USD"},{"qty":1000,"price":"$0.45248","currency":"USD"},{"qty":2000,"price":"$0.42420","currency":"USD"},{"qty":3000,"price":"$0.41006","currency":"USD"},{"qty":5000,"price":"$0.39592","currency":"USD"},{"qty":10000,"price":"$0.37612","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/aec32b0d4a5f742c03de5786d68c7607.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the recommended PCB footprint for DF40C(2.0)-12DS-0.4V(58)?","answer":"The 0.40mm pitch and surface-mount termination require a land pattern that matches the dual-row contact layout. The exact pad dimensions and keep-out zone are defined in the Hirose DF40 series product drawing; the 2mm stack height also sets the board-to-board spacing for the mating header."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/DF40C~12.0~2-12DS-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/DF40C~12.0~2-12DS-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":"2026-07-22T19:46:37.382Z","lastPublished":"2026-07-22T19:46:37.382Z","indexable":true}}