{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"EM04B-LEXSS-TF(HF)","brand":"JST","brandSlug":"jst","productSlug":"EM04B-LEXSS-TF~1HF~2","canonicalUrl":"https://icsourcedirect.com/jst/EM04B-LEXSS-TF~1HF~2","factsUrl":"https://icsourcedirect.com/api/mcp/products/EM04B-LEXSS-TF(HF)","rawCanonicalId":null},"summary":{"shortDescription":"JST LEX series, 4-position header, male pins, 0.098\" (2.50mm) pitch, surface mount, tin-plated contacts, 3A (22 AWG), 300V, solder retention features.","salesMarkdown":"## 2.50 mm Pitch SMT Header, 4 Positions — JST LEX Series The EM04B-LEXSS-TF(HF): It uses a 0.098\" (2.50 mm) pitch, which sets the board footprint spacing and determines the mating receptacle it pairs with. Tin-plated contacts on a copper alloy base carry a 3 A rating when terminated with 22 AWG wire — the current is wire-gauge dependent, so expect derating with smaller conductors. The 300 V voltage rating gives adequate headroom for typical signal-level and low-power distribution inside equipment enclosures. That temperature span covers most commercial and industrial cabinet environments without issue. The solder retention features are molded into the housing; they increase the hold force on the pads after reflow, which matters if the cable assembly sees vibration or repeated mating cycles. The base product number EM04B-LE tells you this is the 4-position version of the LEX SMT header family. The -TF(HF) suffix indicates tape-and-reel packaging (suitable for pick-and-place) and halogen-free compliance per JST's designation.","metaTitle":"JST LEX EM04B-LEXSS-TF(HF) Header, 4 Pos, 2.50mm Pitch, SMT","metaDescription":"JST LEX series 4-position SMT header, 0.098\" (2.50mm) pitch, tin-plated contacts rated 3A at 22 AWG. Active production, sourced to order. RoHS compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Wire-to-Board 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":"$0.8300","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/8b1eff1da8f13fdf0c798c9d7b12037a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the pitch of EM04B-LEXSS-TF(HF)?","answer":"The pitch is 0.098\" (2.50 mm), which sets the spacing between adjacent pin centers on the PCB footprint and determines the mating receptacle pitch."},{"question":"Is EM04B-LEXSS-TF(HF) surface mount?","answer":"Yes, it is a surface-mount header with solder termination and solder retention features for reflow assembly."},{"question":"Is EM04B-LEXSS-TF(HF) RoHS compliant?","answer":"The part carries JST's halogen-free designation (HF suffix), which implies RoHS compliance as a baseline, though the specific RoHS certification is not separately listed in the available specs."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/jst/EM04B-LEXSS-TF~1HF~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/jst/EM04B-LEXSS-TF~1HF~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}}