{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BM28B0.6-50DP/2-0.35V(51)","brand":"Hirose Electric Co Ltd","brandSlug":"hirose-electric-co-ltd","productSlug":"BM28B0.6-50DP-2-0.35V~151~2","canonicalUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/BM28B0.6-50DP-2-0.35V~151~2","factsUrl":"https://icsourcedirect.com/api/mcp/products/BM28B0.6-50DP%2F2-0.35V(51)","rawCanonicalId":null},"summary":{"shortDescription":"Hirose BM28 series header, outer shroud contacts, 50 positions, 0.014\" (0.35mm) pitch, dual-row, surface mount, gold contacts, 0.018\" (0.46mm) height above board, 0.6mm mated stack height.","salesMarkdown":"## Ultra-Compact 0.35 mm Pitch Header for High-Density Mezzanine Interconnects The Hirose BM28B0.6-50DP/2-0.35V(51) is a 50-position, dual-row header from the BM28 series, designed for board-to-board mezzanine stacking where PCB real estate is at a premium. Its defining feature is the 0.014\" (0.35 mm) pitch — one of the tightest in the Hirose lineup — which allows 50 signal lines to route through a footprint roughly the width of a grain of rice. ## What the 0.35 mm Pitch and 0.6 mm Stack Height Mean for Your Layout The 0.35 mm pitch drives the board layout more than any other spec. It dictates the receptacle's contact spacing and forces tight trace routing between pads — expect to work with 0.15 mm to 0.18 mm trace/space on the inner layers if you're running all 50 signals out. The 0.6 mm mated stack height is the total z-height from the host board top surface to the top of the mated receptacle; the header itself sits just 0.018\" (0.46 mm) above the board, which leaves almost no clearance for components on the underside of the mezzanine board. The dual-row arrangement packs the 50 positions into a narrow body, but the outer shroud contacts mean the mating receptacle must align precisely — there's no floating contact beam to compensate for misregistration.","metaTitle":"Hirose BM28B0.6-50DP/2-0.35V(51) Header, 50 Pos","metaDescription":"Hirose BM28 series header, 50 positions, 0.35mm pitch, 0.6mm stack height, gold contacts. Active production, RoHS compliant. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":"BM28","packageCase":null,"mountingType":null,"rohsStatus":"RoHS Compliant","productStatus":"Active","categoryPath":["Board-to-Board Connectors","Mezzanine & Stacking Connectors"],"specifications":{"Mfr":"Hirose Electric Co Ltd","Pitch":"0.014\\\" (0.35mm)","Series":"BM28","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":"0.018\\\" (0.46mm)","Base Product Number":"BM28B0.6","Number of Positions":"50","Mated Stacking Heights":"0.6mm","Contact Finish Thickness":"1.97µin (0.050µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.4400","priceTiers":[{"qty":1,"price":"$1.44000","currency":"USD"},{"qty":10,"price":"$1.21300","currency":"USD"},{"qty":25,"price":"$1.16320","currency":"USD"},{"qty":50,"price":"$1.13820","currency":"USD"},{"qty":100,"price":"$1.08880","currency":"USD"},{"qty":250,"price":"$0.98980","currency":"USD"},{"qty":500,"price":"$0.89082","currency":"USD"},{"qty":1000,"price":"$0.79184","currency":"USD"},{"qty":2500,"price":"$0.71760","currency":"USD"},{"qty":20000,"price":"$0.64337","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/ca6449a4c8557efb9db70d5c533cefd3.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/BM28B0.6-50DP%2F2-0.35V(51)/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the BM28B0.6-50DP/2-0.35V(51) and what is the lead time?","answer":"The BM28B0.6-50DP/2-0.35V(51) is sourced to order through independent distribution. Submit an RFQ for your target quantity and we will return a firm price and lead time."},{"question":"What is the mated stacking height for the BM28B0.6-50DP?","answer":"The mated stacking height for the BM28B0.6-50DP/2-0.35V(51) is 0.6 mm when mated with the corresponding BM28 series receptacle. The header itself sits 0.018\" (0.46 mm) above the board surface."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/BM28B0.6-50DP-2-0.35V~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/BM28B0.6-50DP-2-0.35V~151~2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:52:26.615Z","lastPublished":"2026-08-11T15:52:26.615Z","indexable":true}}