{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BM29B-2DP/2-0.35V(53)","brand":"Hirose Electric Co Ltd","brandSlug":"hirose-electric-co-ltd","productSlug":"BM29B-2DP-2-0.35V~153~2","canonicalUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/BM29B-2DP-2-0.35V~153~2","factsUrl":"https://icsourcedirect.com/api/mcp/products/BM29B-2DP%2F2-0.35V(53)","rawCanonicalId":null},"summary":{"shortDescription":"Hirose BM29 series, Header Outer Shroud Contacts, BM29B-2DP/2-0.35V(53), 0.014\" (0.35mm) pitch, 4 positions (2+2 power), 2 rows, 0.016\" (0.41mm) above board, 0.6mm stack height, Surface Mount, Gold contacts.","salesMarkdown":"## 0.35mm Pitch, 0.6mm Stack — the BM29 Header for Ultra-Thin Assemblies The Hirose BM29B-2DP/2-0.35V(53) is a 4-position (2 + 2 Power) header from the BM29 series, designed for board-to-FPC stacking in tight z-height budgets. Its 0.014\" (0.35mm) pitch packs signal and power into a dual-row footprint, while the 0.6mm mated stack height keeps the overall assembly thin enough for handheld or embedded modules. Gold-plated outer shroud contacts mate with the matching BM29 receptacle, and the 0.016\" (0.41mm) height above board leaves clearance under the flex circuit. ## Why the 0.35mm Pitch Drives the Board Layout At 0.35mm pitch, the trace escape from each pad is tight — expect micro-via or fine-line routing between pads. The 2-row arrangement doubles the density per linear mm of board edge, but the 0.35mm spacing means the footprint is not forgiving of misregistration in the solder paste stencil. Gold plating on the contacts handles the low-insertion-force mating cycles typical of FPC interconnects, where tin fretting would be a risk over repeated flex. ## 4 Positions — Two Signal, Two Power The 4 positions are split as 2 signal and 2 power contacts, a common arrangement for powering a small sensor or display module while passing a differential pair. The outer shroud contacts provide mechanical alignment and shielding continuity when mated with the BM29 receptacle. No current rating is listed in the spec table, but the gold finish and fine pitch suggest per-contact current in the sub-1A range — treat the power pair as a low-current bus, not a main rail. No last-time-buy or phase-out notice has been issued.","metaTitle":"Hirose BM29B-2DP/2-0.35V(53), 0.35mm Pitch Header, 4 Pos","metaDescription":"Hirose BM29B-2DP/2-0.35V(53) header, 0.014\" (0.35mm) pitch, 4 positions (2+2 power), gold contacts, 0.6mm stack height. Active, ROHS3. Sourced to order.","metaKeywords":null},"attributes":{"series":"BM29","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Board-to-Board Connectors","Mezzanine & Stacking Connectors"],"specifications":{"Mfr":"Hirose Electric Co Ltd","Pitch":"0.014\\\" (0.35mm)","Series":"BM29","Package":"Tape & Reel (TR) Cut Tape (CT)","Features":"-","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":"0.016\\\" (0.41mm)","Base Product Number":"BM29B","Number of Positions":"4 (2 + 2 Power)","Mated Stacking Heights":"0.6mm","Contact Finish Thickness":"-"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.1500","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.15000","currency":"USD"},{"qty":10,"price":"$1.01000","currency":"USD"},{"qty":25,"price":"$0.95040","currency":"USD"},{"qty":50,"price":"$0.91080","currency":"USD"},{"qty":100,"price":"$0.87120","currency":"USD"},{"qty":250,"price":"$0.79200","currency":"USD"},{"qty":500,"price":"$0.71280","currency":"USD"},{"qty":1000,"price":"$0.59792","currency":"USD"},{"qty":2000,"price":"$0.56055","currency":"USD"},{"qty":3000,"price":"$0.54187","currency":"USD"},{"qty":5000,"price":"$0.52318","currency":"USD"},{"qty":10000,"price":"$0.49702","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What is the mating height for BM29B-2DP/2-0.35V(53)?","answer":"The mated stacking height is 0.6mm, with the header sitting 0.016\" (0.41mm) above the board surface."},{"question":"Is BM29B-2DP/2-0.35V(53) RoHS compliant?","answer":"Yes, it is ROHS3 compliant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/BM29B-2DP-2-0.35V~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/BM29B-2DP-2-0.35V~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}}