{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BM04B-SRSS-TB(LF)(SN)","brand":"JST","brandSlug":"jst","productSlug":"BM04B-SRSS-TBLFSN","canonicalUrl":"https://icsourcedirect.com/jst/BM04B-SRSS-TBLFSN","factsUrl":"https://icsourcedirect.com/api/mcp/products/BM04B-SRSS-TB(LF)(SN)","rawCanonicalId":null},"summary":{"shortDescription":"JST Sales America Inc. SH/SR series, BM04B-SRSS-TB(LF)(SN), 4-position, 1.00mm pitch, shrouded-4-wall SMT header, tin-plated male pins, rated 1A at 50V, mated stack height 4.9mm.","salesMarkdown":"## 1.00 mm Pitch, 4-Position SMT Header for Tight Board Layouts The BM04B-SRSS-TB(LF)(SN) is a 4-position, single-row, surface-mount header from JST's SH/SR series. Its 1.00 mm pitch (0.039 in) sets the board footprint for dense routing — the narrow pitch keeps the connector body small, but the trace width and clearance between pads need careful attention during layout to avoid shorts. ## SMT Termination with Solder Retention for Reflow Reliability Surface-mount termination with the solder retention feature means the header stays put during reflow — the retention tabs anchor the part to the PCB pads, preventing tombstoning or shift from the solder paste wetting forces. This is a solid choice for automated pick-and-place assembly lines. If your enclosure has less than 5 mm clearance above the board, this connector will not fit; plan for at least 6 mm to allow for the receptacle body and wire bend radius. The natural (off-white) color helps with visual inspection after soldering. ## Mating Half and Board-to-Wire Application This header mates with JST's SR series crimp receptacles — the matching part is the SSM-xxT series housing (e.g., 04SR-3S for 4 positions) with the appropriate crimp terminals (SSHL-002T-P0.2 for 28-32 AWG wire). The board-to-cable/wire style makes this a wire-to-board interconnect — the header stays on the PCB, the receptacle terminates to a discrete wire harness.","metaTitle":"BM04B-SRSS-TB(LF)(SN) JST SH/SR 4-Pin 1mm SMT Header","metaDescription":"JST BM04B-SRSS-TB(LF)(SN) SH/SR series 4-position 1.00mm pitch SMT header. 1A, 50V, tin-plated contacts, shrouded 4-wall, active production. Sourced per RFQ.","metaKeywords":null},"attributes":{"series":"SH/SR","packageCase":null,"mountingType":null,"rohsStatus":"RoHS Compliant","productStatus":"Active","categoryPath":["Pin Headers, Sockets & Housings","Pin Headers"],"specifications":{"Mfr":"JST Sales America Inc.","Style":"Board to Cable/Wire","Series":"SH/SR","Package":"Tape & Reel (TR); Cut Tape (CT)","Features":"Solder Retention","Shrouding":"Shrouded - 4 Wall","Termination":"Solder","Applications":"-","Contact Type":"Male Pin","Contact Shape":"Square","Mounting Type":"Surface Mount","Connector Type":"Header","Fastening Type":"Push-Pull","Number of Rows":"1","Pitch - Mating":"0.039\\\" (1.00mm)","Product Status":"Active","Voltage Rating":"50V","lifecycle_stage":"unknown","Contact Material":"Copper Alloy","Insulation Color":"Natural","Insulation Height":"0.167\\\" (4.25mm)","Ingress Protection":"-","Base Product Number":"BM04B-SR","Insulation Material":"Polyamide (PA), Nylon","Number of Positions":"4","Row Spacing - Mating":"-","Contact Finish - Post":"Tin","Contact Length - Post":"-","Current Rating (Amps)":"1A","Operating Temperature":"-25°C~85°C","Mated Stacking Heights":"4.9mm","Overall Contact Length":"-","Contact Finish - Mating":"Tin","Contact Length - Mating":"-","Number of Positions Loaded":"All","Material Flammability Rating":"UL94 V-0","Contact Finish Thickness - Post":"-","Contact Finish Thickness - Mating":"-"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5900","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.59000","currency":"USD"},{"qty":10,"price":"$0.51300","currency":"USD"},{"qty":100,"price":"$0.42310","currency":"USD"},{"qty":500,"price":"$0.36788","currency":"USD"},{"qty":1500,"price":"$0.29430","currency":"USD"},{"qty":3000,"price":"$0.27591","currency":"USD"},{"qty":7500,"price":"$0.26671","currency":"USD"},{"qty":10500,"price":"$0.24832","currency":"USD"},{"qty":15000,"price":"$0.24464","currency":"USD"},{"qty":37500,"price":"$0.23912","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/01a3d0422a428094e98b60769fffa9d7.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy BM04B-SRSS-TB(LF)(SN) and what is the lead time?","answer":"BM04B-SRSS-TB(LF)(SN) is an active part and can be sourced through our independent distribution network. No stock-holding claim is made — submit an RFQ for your specific volume."},{"question":"What is the mating connector for BM04B-SRSS-TB(LF)(SN)?","answer":"The mating half is a JST SR series crimp receptacle housing, such as the 04SR-3S (4-position), used with SSHL-002T-P0.2 terminals for 28-32 AWG wire. The push-pull retention holds the pair together without a latch."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"isd-matrix-langgraph","citationUrl":"https://icsourcedirect.com/jst/BM04B-SRSS-TBLFSN","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/jst/BM04B-SRSS-TBLFSN 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}}