{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DF40C-40DP-0.4V(51)","brand":"Hirose Electric Co Ltd","brandSlug":"hirose-electric-co-ltd","productSlug":"DF40C-40DP-0.4V~151~2","canonicalUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/DF40C-40DP-0.4V~151~2","factsUrl":"https://icsourcedirect.com/api/mcp/products/DF40C-40DP-0.4V(51)","rawCanonicalId":null},"summary":{"shortDescription":"Hirose DF40 series plug, outer shroud contacts, 40 positions, 0.016\" (0.40mm) pitch, 2 rows, gold 2.00µin, surface mount, 0.045\" (1.14mm) height above board, solder retention.","salesMarkdown":"## Hirose DF40C-40DP-0.4V(51) — 40-Position Fine-Pitch Board-to-Board Plug The 0.045\" (1.14mm) height above board keeps the mated stack low, and the six available stacking heights — 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, and 4mm — let you pick the board separation that fits your enclosure. The outer shroud design means the receptacle's shroud fits over the plug body, giving the mated pair some mechanical stability without needing separate alignment hardware. Typical use is in compact portable electronics, wearables, or any PCB stack where the 0.40mm pitch saves board real estate and the 1.14mm profile clears a tight lid. ## 40 vs 44 Positions — Same Pitch, Same Footprint Class The DF40C-40DP-0.4V(51) sits alongside the DF40C-44DP-0.4V(51) at the same 0.016\" (0.40mm) pitch and 0.045\" (1.14mm) height. The difference is four positions — 40 circuits here, 44 on the sibling. Both use the same gold plating thickness (2.00µin), same dual-row layout, and same solder retention feature. The board footprint changes by the extra four contact pads on each row, so a layout designed for the 44-position version will have empty pads for the 40-position part. If your BOM calls for 40 signal lines, this is the one; if you need 44, step up to the DF40C-44DP-0.4V(51). No other functional spec shifts between them.","metaTitle":"Hirose DF40C-40DP-0.4V(51) Plug, 40 Pos, 0.40mm Pitch","metaDescription":"Hirose DF40C-40DP-0.4V(51) plug, outer shroud contacts, 40 positions, 0.016\" (0.40mm) pitch, gold plating, 1.14mm height. Active, RoHS. 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":"Plug, Outer Shroud Contacts","Contact Finish":"Gold","Number of Rows":"2","Product Status":"Active","lifecycle_stage":"unknown","Height Above Board":"0.045\\\" (1.14mm)","Base Product Number":"DF40C","Number of Positions":"40","Mated Stacking Heights":"1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm","Contact Finish Thickness":"2.00µin (0.051µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.0300","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.03000","currency":"USD"},{"qty":10,"price":"$0.86600","currency":"USD"},{"qty":25,"price":"$0.83080","currency":"USD"},{"qty":50,"price":"$0.81300","currency":"USD"},{"qty":100,"price":"$0.77770","currency":"USD"},{"qty":250,"price":"$0.70700","currency":"USD"},{"qty":500,"price":"$0.63630","currency":"USD"},{"qty":1000,"price":"$0.56560","currency":"USD"},{"qty":2500,"price":"$0.51258","currency":"USD"},{"qty":5000,"price":"$0.49490","currency":"USD"},{"qty":10000,"price":"$0.47016","currency":"USD"},{"qty":15000,"price":"$0.45955","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/aec32b0d4a5f742c03de5786d68c7607.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the mated stacking height for DF40C-40DP-0.4V(51)?","answer":"The DF40C-40DP-0.4V(51) supports six mated stacking heights: 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, and 4mm. The actual stack height depends on which mating receptacle height you pair it with — the plug itself has a fixed 0.045\" (1.14mm) height above board, so the receptacle's height determines the final board-to-board gap."},{"question":"Is DF40C-40DP-0.4V(51) RoHS compliant?","answer":"Yes, the DF40C-40DP-0.4V(51) is RoHS compliant, so it meets the EU restriction on hazardous substances for electronic equipment."},{"question":"Where can I buy DF40C-40DP-0.4V(51)?","answer":"The DF40C-40DP-0.4V(51) is sourced to order through independent distribution. Submit an RFQ for current pricing and availability — the quote will reflect the real-time supply position for your BOM quantity."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/DF40C-40DP-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-40DP-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}}