{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"B04B-XASK-1(LF)(SN)","brand":"JST","brandSlug":"jst","productSlug":"B04B-XASK-1LFSN","canonicalUrl":"https://icsourcedirect.com/jst/B04B-XASK-1LFSN","factsUrl":"https://icsourcedirect.com/api/mcp/products/B04B-XASK-1(LF)(SN)","rawCanonicalId":null},"summary":{"shortDescription":"JST XA series, Board to Cable/Wire, Header, Male Pin, 4 Positions, 0.098\" (2.50mm) Pitch, Through Hole, Press-Fit, Solder, Tin Contacts, Locking Ramp, UL94 V-0, Natural, 3A, 250V, -25°C~85°C, 11.3mm Stack Height","salesMarkdown":"## Board Footprint and Pitch The B04B-XASK-1(LF)(SN): This is the dimension that must match the mating receptacle housing — any mismatch and the connector pair won't engage. This is the same locking mechanism used across the XA series — the mating half is the XA receptacle housing, which accepts the appropriate crimp terminal. The 0.134\" (3.40mm) post length is designed for standard PCB thicknesses up to 1.6mm. The base product number is B04B-XAS, which is the same across all variants in this position count. The 4-position B04B-XASK-1(LF)(SN) shares the same 2.50mm pitch, 3 A rating, and locking ramp as the 5-position B05B-XASK-1. Compared to the un-suffixed B04B-XASK-1, the (LF)(SN) suffix indicates RoHS compliance and tin-plated contacts. The base part B04B-XAS is identical in all other respects.","metaTitle":"JST B04B-XASK-1(LF)(SN) Header – 4-Pos, 2.50mm Pitch, Active","metaDescription":"JST XA series header, 4 positions, 2.50mm pitch, shrouded, locking ramp, 3A, 250V, UL94 V-0. Active production, RoHS. Sourced per RFQ.","metaKeywords":null},"attributes":{"series":"XA","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":"XA","Package":"Bulk","Features":"-","Shrouding":"Shrouded - 4 Wall","Termination":"Press-Fit, Solder","Applications":"-","Contact Type":"Male Pin","Contact Shape":"Circular","Mounting Type":"Through Hole","Connector Type":"Header","Fastening Type":"Locking Ramp","Number of Rows":"1","Pitch - Mating":"0.098\\\" (2.50mm)","Product Status":"Active","Voltage Rating":"250V","lifecycle_stage":"unknown","Contact Material":"Copper Alloy","Insulation Color":"Natural","Insulation Height":"0.346\\\" (8.80mm)","Ingress Protection":"-","Base Product Number":"B04B-XAS","Insulation Material":"Polyamide (PA66), Nylon 6/6, Glass Filled","Number of Positions":"4","Row Spacing - Mating":"-","Contact Finish - Post":"Tin","Contact Length - Post":"0.134\\\" (3.40mm)","Current Rating (Amps)":"3A","Operating Temperature":"-25°C~85°C","Mated Stacking Heights":"11.3mm","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":"$0.3000","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.30000","currency":"USD"},{"qty":10,"price":"$0.25400","currency":"USD"},{"qty":100,"price":"$0.19740","currency":"USD"},{"qty":500,"price":"$0.16922","currency":"USD"},{"qty":1000,"price":"$0.14101","currency":"USD"},{"qty":5000,"price":"$0.12087","currency":"USD"},{"qty":10000,"price":"$0.11281","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What housing mates with JST B04B-XASK-1(LF)(SN)?","answer":"The mating half is the JST XA series receptacle housing. It accepts the corresponding crimp terminal (sold separately)."},{"question":"Is B04B-XASK-1(LF)(SN) RoHS compliant?","answer":"Yes, the (LF)(SN) suffix indicates RoHS compliance and tin-plated contacts."},{"question":"What is the difference between B04B-XASK-1 and B04B-XASK-1(LF)(SN)?","answer":"The (LF)(SN) suffix on the part number indicates RoHS compliance and tin-plated contacts. The base part B04B-XASK-1 may not carry the same compliance marking. All other specifications are identical."},{"question":"Where can I buy JST B04B-XASK-1(LF)(SN) and check stock?","answer":"This part is sourced per RFQ through independent distribution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"isd-matrix-langgraph","citationUrl":"https://icsourcedirect.com/jst/B04B-XASK-1LFSN","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/B04B-XASK-1LFSN 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}}