{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BM28B0.6-30DS/2-0.35V(51)","brand":"Hirose Electric Co Ltd","brandSlug":"hirose-electric-co-ltd","productSlug":"BM28B0.6-30DS-2-0.35V~151~2","canonicalUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/BM28B0.6-30DS-2-0.35V~151~2","factsUrl":"https://icsourcedirect.com/api/mcp/products/BM28B0.6-30DS%2F2-0.35V(51)","rawCanonicalId":null},"summary":{"shortDescription":"Hirose BM28 series receptacle, center strip contacts, 30 positions, 0.014\" (0.35mm) pitch, 2 rows, 0.024\" (0.61mm) height above board, gold contact finish, surface mount, solder retention.","salesMarkdown":"The Hirose BM28B0.6-30DS/2-0.35V(51) is a 30-position receptacle with center strip contacts, part of the BM28 series. It's the board-side half of a board-to-board mezzanine connection, designed to mate with a matching BM28 header at a fixed 0.6mm stack height. The 0.35mm pitch and 0.6mm mated height put this squarely in ultra-thin portable device territory — think smartphone mainboards, wearable PCBs, or compact camera modules where every tenth of a millimeter of z-height is budgeted. The gold-plated contacts and dual-row layout give it a signal-density advantage for high-pin-count interconnects in a small footprint. Solder retention features on the body hold the part steady during reflow — no extra fixturing needed on the SMT line. ## Pitch and Footprint — The Tight Squeeze At 0.35mm pitch, this connector demands a fine-line PCB process. The trace-and-space rules for routing out of the footprint need to match the 0.35mm centerline — standard 0.5mm pitch design rules won't clear. The 30 positions in two rows keep the board-edge footprint compact, but the breakout vias need careful placement to avoid necking down the traces. ## Stack Height and Z-Height Budget The mated stack height is 0.6mm, and the receptacle alone sits 0.024\" (0.61mm) above the board. That means the total z-height from the bottom of the header's PCB to the top of the receptacle's body is about 1.2mm — tight enough that a 1.0mm-thick PCB plus a 0.6mm stack leaves almost no room for a stiffener or shield can above the connector. Plan the enclosure clearance accordingly. RoHS compliant. ## Comparing the 30-Position Variant The BM28B0.6-30DS/2-0.35V(53) shares the same 30 positions, 0.35mm pitch, 0.6mm stack height, and gold plating — the only difference is the packaging suffix, which affects reel vs cut-tape quantity. For a prototype run or a low-volume BOM, the (51) variant in Cut Tape is the one to order; the (53) ships in Tape & Reel for automated assembly. No footprint or electrical difference between them. The 34-position siblings (BM28B0.6-34DS/2-0.35V(51) and (53)) add four more signal lines at the same pitch and stack height — same footprint length extension, same routing rules. If the BOM calls for 34 circuits, the 30-position part won't fit the header.","metaTitle":"Hirose BM28B0.6-30DS/2-0.35V(51) Receptacle, 30 Pos","metaDescription":"Hirose BM28 series 30-position receptacle, 0.014\" (0.35mm) pitch, 0.6mm stack height, gold-plated contacts, SMT with solder retention.","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":"30","Mated Stacking Heights":"0.6mm","Contact Finish Thickness":"1.97µin (0.050µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.2000","priceTiers":[{"qty":1,"price":"$1.20000","currency":"USD"},{"qty":10,"price":"$1.01500","currency":"USD"},{"qty":25,"price":"$0.97320","currency":"USD"},{"qty":50,"price":"$0.95240","currency":"USD"},{"qty":100,"price":"$0.91100","currency":"USD"},{"qty":250,"price":"$0.82820","currency":"USD"},{"qty":500,"price":"$0.74538","currency":"USD"},{"qty":1000,"price":"$0.66256","currency":"USD"},{"qty":2500,"price":"$0.60044","currency":"USD"},{"qty":20000,"price":"$0.53833","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/ca6449a4c8557efb9db70d5c533cefd3.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/BM28B0.6-30DS%2F2-0.35V(51)/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy BM28B0.6-30DS/2-0.35V(51)?","answer":"Submit a request for current pricing and availability — confirmed at quote time."},{"question":"What is the pitch of BM28B0.6-30DS/2-0.35V(51)?","answer":"The contact pitch is 0.014\" (0.35mm), which determines the PCB footprint and trace routing density."},{"question":"Will BM28B0.6-30DS/2-0.35V(51) drop into a board designed for BM28B0.6-30DS/2-0.35V(53)?","answer":"Yes, the (51) and (53) suffixes differ only in packaging — same footprint, same 30 positions, same 0.35mm pitch, same 0.6mm stack height. The (53) ships in Tape & Reel; the (51) in Cut Tape. No rewiring or board change needed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/BM28B0.6-30DS-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/BM28B0.6-30DS-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}}