{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DF40C-50DS-0.4V(51)","brand":"Hirose Electric Co Ltd","brandSlug":"hirose-electric-co-ltd","productSlug":"DF40C-50DS-0.4V~151~2","canonicalUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/DF40C-50DS-0.4V~151~2","factsUrl":"https://icsourcedirect.com/api/mcp/products/DF40C-50DS-0.4V(51)","rawCanonicalId":null},"summary":{"shortDescription":"Hirose DF40 series, receptacle, center strip contacts, 50 positions, 2 rows, 0.016\" (0.40mm) pitch, surface mount, gold contact finish.","salesMarkdown":"## Board-to-Board Mezzanine Connector for Tight Stack Heights The Hirose DF40C-50DS-0.4V(51) is a 50-position receptacle from the DF40 series, designed as a center strip contact connector for board-to-board mezzanine stacking. Its defining feature is the 0.016\" (0.40mm) pitch across two rows, which packs 50 circuits into a compact footprint suited for space-constrained portable electronics, camera modules, and internal display interconnects where the PCB real estate is at a premium. The mated stacking height is 1.5mm, making this part a fit for thin-profile assemblies where the gap between boards is tight. ## What the 0.40mm Pitch and 1.45mm Height Mean for Your Layout At 0.40mm pitch, the routing density between pads is high — expect trace-and-space limitations on the PCB that may require via-in-pad or microvia fan-out for the inner rows. The 0.057\" (1.45mm) height above board sets the z-axis clearance between the two PCBs after mating, so the total stack height of 1.5mm (per the mated spec) governs the enclosure thickness budget. This is not a connector you hand-solder; the surface mount termination demands a reflow profile matched to the gold-plated contacts. ## Position Count Choice: 50 vs 40 vs 60 The DF40C family shares the same 0.40mm pitch, 2-row layout, and 1.45mm board height across position counts. The DF40C-50DS-0.4V(51) sits between the 40-position DF40C-40DS-0.4V(51) and the 60-position DF40C-60DS-0.4V(51). The decision is purely a circuit-count match — the footprint grows linearly with positions, so the 50-position version is for a 50-signal BOM line where 40 is too few and 60 wastes board area. The contact finish thickness is identical at 2.00µin across all three, so there is no duty-cycle trade-off. ## Mating and Stacking Height Options This receptacle mates with the corresponding DF40 series header (typically the DF40C-xxDP-0.4V series) to form a 1.5mm mated stack. For applications needing a taller gap, the DF40C(2.0)-50DS-0.4V(51) variant offers a 0.077\" (1.95mm) board height, which changes the mated stack to 2.0mm — a direct swap on the same footprint if the z-axis budget allows. The gold-over-nickel contact finish at 2.00µin is standard for the series and supports the moderate mating cycle counts typical of internal board-to-board connections.","metaTitle":"Hirose DF40C-50DS-0.4V(51) Receptacle, 50 Pos, 0.40mm Pitch","metaDescription":"Hirose DF40C-50DS-0.4V(51) receptacle, 50 positions, 0.40mm pitch, 1.45mm stacking height. Gold-plated SMT, active production. Sourced per 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":"0.057\\\" (1.45mm)","Base Product Number":"DF40C","Number of Positions":"50","Mated Stacking Heights":"1.5mm","Contact Finish Thickness":"2.00µin (0.051µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.1100","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.11000","currency":"USD"},{"qty":10,"price":"$0.94000","currency":"USD"},{"qty":25,"price":"$0.90200","currency":"USD"},{"qty":50,"price":"$0.88280","currency":"USD"},{"qty":100,"price":"$0.84440","currency":"USD"},{"qty":250,"price":"$0.76760","currency":"USD"},{"qty":500,"price":"$0.69084","currency":"USD"},{"qty":1000,"price":"$0.61408","currency":"USD"},{"qty":2500,"price":"$0.55651","currency":"USD"},{"qty":5000,"price":"$0.53732","currency":"USD"},{"qty":10000,"price":"$0.51045","currency":"USD"},{"qty":15000,"price":"$0.49894","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/aec32b0d4a5f742c03de5786d68c7607.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the mating connector for DF40C-50DS-0.4V(51)?","answer":"The DF40C-50DS-0.4V(51) mates with a DF40 series header, typically the DF40C-xxDP-0.4V series, to achieve a 1.5mm mated stacking height."},{"question":"What is the stacking height of DF40C-50DS-0.4V(51)?","answer":"The mated stacking height is 1.5mm, with the receptacle sitting 0.057\" (1.45mm) above the board surface."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/DF40C-50DS-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-50DS-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}}