{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BM28B0.6-20DS/2-0.35V(51)","brand":"Hirose Electric Co Ltd","brandSlug":"hirose-electric-co-ltd","productSlug":"BM28B0.6-20DS-2-0.35V~151~2","canonicalUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/BM28B0.6-20DS-2-0.35V~151~2","factsUrl":"https://icsourcedirect.com/api/mcp/products/BM28B0.6-20DS%2F2-0.35V(51)","rawCanonicalId":null},"summary":{"shortDescription":"Hirose BM28 series, 20 position receptacle, 0.014\" (0.35mm) pitch, dual row, SMT, gold contacts, 0.024\" (0.61mm) above board, 0.6mm mated stack height, solder retention.","salesMarkdown":"## 0.6mm Stack Height, 0.35mm Pitch — Mezzanine Fit The Hirose BM28B0.6-20DS/2-0.35V(51) is a 20-position receptacle with center strip contacts from the BM28 series, designed for board-to-board mezzanine stacking at a mated height of 0.6mm. The 0.014\" (0.35mm) pitch is the tightest constraint — it drives the board footprint and limits routing density between pads. ## What the 0.6mm Stack Height Means for the Layout The mated stacking height of 0.6mm is the dimension that drives the board-to-board spacing — not the connector body height alone. With the receptacle sitting 0.024\" (0.61mm) above the board, the total stack after mating with the matching BM28 header lands at exactly 0.6mm. That leaves almost no clearance for components on the inner faces; this is a connector for ultra-thin mezzanine pairs where the two PCBs sit nearly flush. If your board stack-up budget is tighter than 0.6mm, this series won't fit — you'd need a different mezzanine family. ## Gold Flash Plating — Limited Mating Cycles It protects the mating surface during initial assembly and a few reconnections, but it won't survive hundreds of mating cycles. For a one-time board stack in a consumer device or a low-service-life assembly, it's adequate. If the design requires frequent field reconnections or repeated board separation, the flash will wear through to the base metal and contact resistance will drift. The gold is cosmetic for corrosion resistance during storage; the real cycle life is limited.","metaTitle":"Hirose BM28B0.6-20DS/2-0.35V(51), 20P Receptacle","metaDescription":"Hirose BM28 series receptacle, 20 positions, 0.014\" (0.35mm) pitch, 0.6mm mated stack height. Gold contacts, SMT, solder retention. Active production, RoHS.","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":"Receptacle, Center Strip Contacts","Contact Finish":"Gold","Number of Rows":"2","Product Status":"Active","lifecycle_stage":"unknown","Height Above Board":"0.024\\\" (0.61mm)","Base Product Number":"BM28B0.6","Number of Positions":"20","Mated Stacking Heights":"0.6mm","Contact Finish Thickness":"1.97µin (0.050µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.0500","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.05000","currency":"USD"},{"qty":10,"price":"$0.89100","currency":"USD"},{"qty":25,"price":"$0.85440","currency":"USD"},{"qty":50,"price":"$0.83620","currency":"USD"},{"qty":100,"price":"$0.79990","currency":"USD"},{"qty":250,"price":"$0.72720","currency":"USD"},{"qty":500,"price":"$0.65448","currency":"USD"},{"qty":1000,"price":"$0.58176","currency":"USD"},{"qty":2500,"price":"$0.52722","currency":"USD"},{"qty":20000,"price":"$0.47268","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/ca6449a4c8557efb9db70d5c533cefd3.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy BM28B0.6-20DS/2-0.35V(51) and what is the lead time?","answer":"Submit an RFQ for your target quantity and we'll provide a firm lead time and price from the supply channel."},{"question":"What is the mated stacking height of BM28B0.6-20DS/2-0.35V(51)?","answer":"The mated stacking height is 0.6mm. The receptacle body sits 0.024\" (0.61mm) above the board surface, and the mating header completes the 0.6mm stack."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/BM28B0.6-20DS-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/BM28B0.6-20DS-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":"2026-07-22T19:46:37.382Z","lastPublished":"2026-07-22T19:46:37.382Z","indexable":true}}