{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BM20B(0.8)-40DS-0.4V(53)","brand":"Hirose Electric Co Ltd","brandSlug":"hirose-electric-co-ltd","productSlug":"BM20B~10.8~2-40DS-0.4V~153~2","canonicalUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/BM20B~10.8~2-40DS-0.4V~153~2","factsUrl":"https://icsourcedirect.com/api/mcp/products/BM20B(0.8)-40DS-0.4V(53)","rawCanonicalId":null},"summary":{"shortDescription":"Hirose BM20 series receptacle, center strip contacts, 40 positions, 0.016\" (0.40mm) pitch, dual row, gold, surface mount, 0.031\" (0.80mm) height above board, solder retention.","salesMarkdown":"## 0.40mm Pitch, 40-Position Mezzanine Receptacle — Board-Layout Fit The Hirose BM20B(0.8)-40DS-0.4V(53) is a 40-position receptacle from the BM20 series, designed for board-to-board mezzanine stacking at a mated height of 0.8mm. The 0.016\" (0.40mm) pitch on a dual-row layout packs 40 circuits into a compact footprint — the tight pitch is the primary constraint for PCB trace escape and pad spacing. Gold-plated contacts on both rows handle signal-level duty in dense, low-profile interconnects typical of mobile devices, wearables, and compact embedded systems. ## Position Count and Stack Height — What Drives the Fit The 40 positions match a 40-circuit BOM line directly — the first check against the schematic is the count. The 0.40mm pitch forces a fine-pitch footprint — standard 0.5mm or 0.8mm pitch routing rules do not apply here, and the board house must support the trace/space for 0.40mm pad centers.","metaTitle":"Hirose BM20B(0.8)-40DS-0.4V(53), 0.40mm Pitch","metaDescription":"Hirose BM20 series 40-position receptacle, 0.40mm pitch, 0.80mm stacking height. Gold contacts, SMT, solder retention. Active production — sourced per RFQ.","metaKeywords":null},"attributes":{"series":"BM20","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":"BM20","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":"0.031\\\" (0.80mm)","Base Product Number":"BM20B","Number of Positions":"40","Mated Stacking Heights":"0.8mm","Contact Finish Thickness":"-"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.6400","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.64000","currency":"USD"},{"qty":10,"price":"$1.42400","currency":"USD"},{"qty":25,"price":"$1.36360","currency":"USD"},{"qty":50,"price":"$1.33320","currency":"USD"},{"qty":100,"price":"$1.27260","currency":"USD"},{"qty":250,"price":"$1.15140","currency":"USD"},{"qty":500,"price":"$1.06050","currency":"USD"},{"qty":1000,"price":"$0.90900","currency":"USD"},{"qty":2000,"price":"$0.87870","currency":"USD"},{"qty":3000,"price":"$0.84840","currency":"USD"},{"qty":5000,"price":"$0.80598","currency":"USD"},{"qty":10000,"price":"$0.78780","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/6c7b71a2bff88c630f5ef7f13273a272.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the pitch of BM20B(0.8)-40DS-0.4V(53)?","answer":"The pitch is 0.016\" (0.40mm), dual-row, which defines the pad spacing and trace escape routing on the PCB."},{"question":"What is the stacking height of BM20B(0.8)-40DS-0.4V(53)?","answer":"The mated stacking height is 0.8mm — the z-axis clearance between the two boards in a mezzanine stack."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/BM20B~10.8~2-40DS-0.4V~153~2","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/BM20B~10.8~2-40DS-0.4V~153~2 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}}