{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BM20B(0.8)-20DP-0.4V(53)","brand":"Hirose Electric Co Ltd","brandSlug":"hirose-electric-co-ltd","productSlug":"BM20B~10.8~2-20DP-0.4V~153~2","canonicalUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/BM20B~10.8~2-20DP-0.4V~153~2","factsUrl":"https://icsourcedirect.com/api/mcp/products/BM20B(0.8)-20DP-0.4V(53)","rawCanonicalId":null},"summary":{"shortDescription":"Hirose BM20 series header, outer shroud contacts, 20 positions, 0.016\" (0.40mm) pitch, dual-row, surface mount, gold contact finish, 0.026\" (0.65mm) height above board, 0.8mm mated stacking height, solder retention.","salesMarkdown":"## 0.40mm Pitch Mezzanine Header for Tight Stack Heights The Hirose BM20B(0.8)-20DP-0.4V(53) is a 20-position, dual-row header from the BM20 series, designed for board-to-board mezzanine connections where PCB real estate is at a premium. Its 0.016\" (0.40mm) pitch is among the tightest in the mezzanine connector class, letting you route dense signal traces between two parallel boards without expanding the board footprint. The connector sits 0.026\" (0.65mm) above the board and mates to a stacking height of 0.8mm — a z-height budget that fits slim handheld devices, camera modules, or sensor assemblies where every tenth of a millimeter counts. The outer shroud contacts guide alignment during mating and shield the signal pins from accidental stubbing. ## SMT Footprint and Solder Retention This keeps the header from lifting or shifting under the shear load of a mated cable or during thermal cycling. The Tape & Reel packaging (also available in Cut Tape) feeds directly into a pick-and-place line, which keeps assembly throughput high for volume builds.","metaTitle":"Hirose BM20B(0.8)-20DP-0.4V(53) Header, 20 Pos, 0.40mm Pitch","metaDescription":"Hirose BM20 series header, 20 positions, 0.016\" (0.40mm) pitch, dual-row SMT, gold contacts, 0.8mm stacking height. 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":"20","Mated Stacking Heights":"0.8mm","Contact Finish Thickness":"-"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.3500","priceTiers":[{"qty":1,"price":"$1.35000","currency":"USD"},{"qty":10,"price":"$1.13800","currency":"USD"},{"qty":25,"price":"$1.09200","currency":"USD"},{"qty":50,"price":"$1.06860","currency":"USD"},{"qty":100,"price":"$1.02210","currency":"USD"},{"qty":250,"price":"$0.92920","currency":"USD"},{"qty":500,"price":"$0.83628","currency":"USD"},{"qty":1000,"price":"$0.74336","currency":"USD"},{"qty":2000,"price":"$0.69690","currency":"USD"},{"qty":3000,"price":"$0.67367","currency":"USD"},{"qty":5000,"price":"$0.65044","currency":"USD"},{"qty":10000,"price":"$0.61792","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/6c7b71a2bff88c630f5ef7f13273a272.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/BM20B(0.8)-20DP-0.4V(53)/alternatives.json"},"ai":{"faq":[{"question":"What is the pitch of BM20B(0.8)-20DP-0.4V(53)?","answer":"The pitch is 0.016\" (0.40mm), which is the center-to-center spacing between adjacent contacts. This tight pitch allows dense signal routing on the PCB but requires careful trace width/spacing design and via placement within the keep-out zone."},{"question":"What is the recommended mating connector for BM20B(0.8)-20DP-0.4V(53)?","answer":"This header mates with a Hirose BM20 series receptacle of the same position count and stacking height — look for a mating part with the same 0.8mm mated stacking height and 20-position, dual-row configuration. The outer shroud contacts on this header align with the receptacle's inner contact beams."},{"question":"Where can I buy BM20B(0.8)-20DP-0.4V(53)?","answer":"This part is sourced to order against your BOM quantity."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/BM20B~10.8~2-20DP-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~10.8~2-20DP-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}}