{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BM20B(0.8)-40DP-0.4V(53)","brand":"Hirose Electric Co Ltd","brandSlug":"hirose-electric-co-ltd","productSlug":"BM20B~10.8~2-40DP-0.4V~153~2","canonicalUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/BM20B~10.8~2-40DP-0.4V~153~2","factsUrl":"https://icsourcedirect.com/api/mcp/products/BM20B(0.8)-40DP-0.4V(53)","rawCanonicalId":null},"summary":{"shortDescription":"Hirose BM20 series header, outer shroud contacts, 40 positions, 0.016\" (0.40mm) pitch, 2 rows, gold contact finish, surface mount, 0.026\" (0.65mm) height above board, 0.8mm mated stacking height, solder retention features.","salesMarkdown":"The Hirose BM20B(0.8)-40DP-0.4V(53) is a 40-position header from the BM20 series, designed for board-to-board mezzanine stacking at a mated height of 0.8mm. That dimension is set by the connector design — it is not adjustable. The 0.40mm pitch drives tight routing: trace widths and spaces in the breakout region will need to match the fine pitch, typically requiring controlled impedance design if the signal speed is high. The connector includes solder retention features that anchor the part to the PCB during reflow. On a 40-position, 0.40mm-pitch SMT header, those retention pads prevent the connector from shifting as the solder paste reflows — a common failure point on fine-pitch connectors without them. No obsolescence notice or last-time-buy window is on record. There is no official cross-reference or second-source on file; the BM20B(0.8)-40DP-0.4V(51) shares the same pitch, position count, and stack height but carries a different plating thickness spec (2.00µin (0.051µm) gold), which may matter for high-cycle-count applications.","metaTitle":"Hirose BM20B(0.8)-40DP-0.4V(53) 40 Pin Header, 0.40mm Pitch","metaDescription":"Hirose BM20 series 40-position header, 0.40mm pitch, 0.8mm stacking height, gold-plated contacts, SMT with solder retention. Active lifecycle, RoHS compliant.","metaKeywords":null},"attributes":{"series":"BM20","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":"BM20","Package":"Tape & Reel (TR) Cut Tape (CT)","Features":"Solder Retention","Mounting Type":"Surface Mount","Connector Type":"Header, Outer Shroud Contacts","Contact Finish":"Gold","Number of Rows":"2","Product Status":"Active","lifecycle_stage":"unknown","Height Above Board":"0.026\\\" (0.65mm)","Base Product Number":"BM20B","Number of Positions":"40","Mated Stacking Heights":"0.8mm","Contact Finish Thickness":"-"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.7500","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.75000","currency":"USD"},{"qty":10,"price":"$1.51900","currency":"USD"},{"qty":25,"price":"$1.45440","currency":"USD"},{"qty":50,"price":"$1.42200","currency":"USD"},{"qty":100,"price":"$1.35740","currency":"USD"},{"qty":250,"price":"$1.22816","currency":"USD"},{"qty":500,"price":"$1.13120","currency":"USD"},{"qty":1000,"price":"$0.96960","currency":"USD"},{"qty":2000,"price":"$0.93728","currency":"USD"},{"qty":3000,"price":"$0.90496","currency":"USD"},{"qty":5000,"price":"$0.85971","currency":"USD"},{"qty":10000,"price":"$0.84032","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/6c7b71a2bff88c630f5ef7f13273a272.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the mated stacking height of BM20B(0.8)-40DP-0.4V(53)?","answer":"The mated stacking height is 0.8mm. This is the fixed distance between the two PCBs when the header is mated with its corresponding receptacle. It is not adjustable — the board-to-board spacing is set by the connector design."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/BM20B~10.8~2-40DP-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~10.8~2-40DP-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":"2026-07-22T19:46:37.382Z","lastPublished":"2026-07-22T19:46:37.382Z","indexable":true}}