{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BM28B0.6-20DP/2-0.35V(51)","brand":"Hirose Electric Co Ltd","brandSlug":"hirose-electric-co-ltd","productSlug":"BM28B0.6-20DP-2-0.35V~151~2","canonicalUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/BM28B0.6-20DP-2-0.35V~151~2","factsUrl":"https://icsourcedirect.com/api/mcp/products/BM28B0.6-20DP%2F2-0.35V(51)","rawCanonicalId":null},"summary":{"shortDescription":"Hirose BM28 series header, outer shroud contacts, 20 positions, 2 rows, 0.014\" (0.35mm) pitch, surface mount, gold contact finish, 0.018\" (0.46mm) height above board, 0.6mm mated stacking height, solder retention feature.","salesMarkdown":"The Hirose BM28B0.6-20DP/2-0.35V(51) is a 20-position, dual-row header from the BM28 series, designed for board-to-board mezzanine stacking at a tight 0.6mm mated height. The 0.014\" (0.35mm) pitch is the defining constraint here — it drives the PCB footprint density and demands precise alignment during assembly. ## Sizing the Board Stack and Footprint The 0.6mm mated stacking height is the critical z-dimension for mezzanine applications — it sets the gap between parallel PCBs. At 0.35mm pitch, the board-level routing requires fine-line traces and tightly controlled impedance for high-speed signals. The 0.018\" (0.46mm) height above board means the connector sits low, leaving clearance for components on the opposing board. Surface-mount termination with solder retention pads keeps the part in place through reflow and subsequent handling. This is not a high-cycle or high-current power contact; the thin gold layer protects the base metal during initial mates but will wear with repeated connect-disconnect beyond a few dozen cycles. For applications requiring frequent field servicing, a thicker plating variant would be needed.","metaTitle":"Hirose BM28B0.6-20DP/2-0.35V(51) Header, 20 Pos","metaDescription":"Hirose BM28 series 20-position header, 0.35mm pitch, 0.6mm stacking height, gold-plated contacts, SMT with solder retention. Active production, RoHS compliant.","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":"20","Mated Stacking Heights":"0.6mm","Contact Finish Thickness":"1.97µin (0.050µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.9400","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.94000","currency":"USD"},{"qty":10,"price":"$0.79200","currency":"USD"},{"qty":25,"price":"$0.75960","currency":"USD"},{"qty":50,"price":"$0.74340","currency":"USD"},{"qty":100,"price":"$0.71100","currency":"USD"},{"qty":250,"price":"$0.64640","currency":"USD"},{"qty":500,"price":"$0.58176","currency":"USD"},{"qty":1000,"price":"$0.51712","currency":"USD"},{"qty":2500,"price":"$0.46864","currency":"USD"},{"qty":20000,"price":"$0.42016","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/ca6449a4c8557efb9db70d5c533cefd3.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the mated stacking height of BM28B0.6-20DP/2-0.35V(51)?","answer":"The mated stacking height is 0.6mm, which sets the board-to-board gap in a mezzanine configuration."},{"question":"Does BM28B0.6-20DP/2-0.35V(51) have a solder retention feature?","answer":"Yes, the connector includes solder retention features that anchor it during reflow and resist shear forces in the final assembly."},{"question":"Where can I buy BM28B0.6-20DP/2-0.35V(51)?","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/BM28B0.6-20DP-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/BM28B0.6-20DP-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}}