{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"EM04B-LEXSS-TF","brand":"JST","brandSlug":"jst","productSlug":"EM04B-LEXSS-TF","canonicalUrl":"https://icsourcedirect.com/jst/EM04B-LEXSS-TF","factsUrl":"https://icsourcedirect.com/api/mcp/products/EM04B-LEXSS-TF","rawCanonicalId":null},"summary":{"shortDescription":"JST LEX series, Header, Male Pins, 4 positions, 0.098\" (2.50mm) pitch, Surface Mount, Solder, Tin contacts, 3A (22 AWG), 300V.","salesMarkdown":"## 4-Position, 2.50mm Pitch SMT Header for Wire-to-Board The EM04B-LEXSS-TF: It carries 4 positions on a 0.098\" (2.50mm) pitch — the pitch and circuit count define the PCB footprint and the BOM line match. Rated 3 A per circuit when terminated with 22 AWG wire, and 300 V. ## Mating Half: LEXR-04V-S Receptacle Housing This header mates with the JST LEXR-04V-S receptacle housing (4 circuits, 2.50mm pitch). The receptacle accepts crimp terminals — the harness side is built separately and then mated to the board-mounted header. Don't order half a connection: the LEXR-04V-S is the companion part that completes the wire-to-board pair. The EM04B-LEXSS-TF (4 positions) sits alongside the 2-position EM02B-LEXSS-TF in the same LEX series. Both share the 0.098\" (2.50mm) pitch, SMT mounting, tin contacts, and 3 A (22 AWG) rating. No other functional specs change between the two.","metaTitle":"JST EM04B-LEXSS-TF LEX Header, 4 Pos, 2.50mm, SMT, Tin","metaDescription":"JST EM04B-LEXSS-TF LEX series header, 4 circuits, 0.098\" (2.50mm) pitch, SMT, tin-plated contacts, rated 3A (22 AWG) at 300V.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Wire-to-Board Connectors","LED Lighting Connectors"],"specifications":{"Mfr":"JST Sales America Inc.","Pitch":"0.098\\\" (2.50mm)","Style":"Board to Cable/Wire","Series":"LEX","Package":"Tape & Reel (TR) Cut Tape (CT)","Features":"Solder Retention","Wire Gauge":"-","Termination":"Solder","Housing Color":"Natural","Mating Cycles":"-","Mounting Type":"Surface Mount","Connector Type":"Header, Male Pins","Contact Finish":"Tin","Fastening Type":"-","Product Status":"Active","Voltage Rating":"300V","lifecycle_stage":"unknown","Contact Material":"Copper Alloy","Housing Material":"Polyamide (PA9T), Nylon 9T","Ingress Protection":"-","Base Product Number":"EM04B-LE","Number of Positions":"4","Current Rating (Amps)":"3A (22 AWG)","Operating Temperature":"-55°C ~ 105°C"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.8000","stockQuantity":20,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/8b1eff1da8f13fdf0c798c9d7b12037a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy EM04B-LEXSS-TF?","answer":"Submit a quote request for current pricing and availability — confirmed at quote time."},{"question":"What is the mating connector for EM04B-LEXSS-TF?","answer":"The mating half is the JST LEXR-04V-S receptacle housing (4 circuits, 2.50mm pitch), which accepts crimp terminals for the wire harness."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"isd-matrix-langgraph","citationUrl":"https://icsourcedirect.com/jst/EM04B-LEXSS-TF","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/EM04B-LEXSS-TF 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}}