{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"B12B-XASK-1(LF)(SN)","brand":"JST","brandSlug":"jst","productSlug":"B12B-XASK-1LFSN","canonicalUrl":"https://icsourcedirect.com/jst/B12B-XASK-1LFSN","factsUrl":"https://icsourcedirect.com/api/mcp/products/B12B-XASK-1(LF)(SN)","rawCanonicalId":null},"summary":{"shortDescription":"JST Sales America Inc. XA series, Board to Cable/Wire, 12 Positions, 2.50mm Pitch, Through Hole, Tin Contacts, Locking Ramp, UL94 V-0","salesMarkdown":"## Board-to-Cable/Wire Header for 2.50mm Pitch Harnesses The B12B-XASK-1(LF)(SN): It mates with the corresponding XA crimp receptacle housing to form a locked wire-to-board connection. ## Peer Comparison: B12B-XASK-1 vs. B12B-XASK-1-A The B12B-XASK-1-A adds a board guide feature to the same 12-position, 2.50 mm pitch header — otherwise identical in ratings, material, and dimensions. For a lower circuit count, the B11B-XASK-1 offers 11 positions with the same pitch, current, and voltage rating.","metaTitle":"JST B12B-XASK-1(LF)(SN) Header 12 Pos 2.5mm Pitch","metaDescription":"JST XA series 12-position shrouded header, 2.50mm pitch, 3A, 250V, locking ramp, 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":"B12B-XAS","Insulation Material":"Polyamide (PA66), Nylon 6/6, Glass Filled","Number of Positions":"12","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":"$0.7800","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.78000","currency":"USD"},{"qty":10,"price":"$0.67600","currency":"USD"},{"qty":100,"price":"$0.55720","currency":"USD"},{"qty":500,"price":"$0.48450","currency":"USD"},{"qty":1000,"price":"$0.39971","currency":"USD"},{"qty":5000,"price":"$0.35126","currency":"USD"},{"qty":10000,"price":"$0.32703","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What is the pinout and wiring diagram for JST B12B-XASK-1(LF)(SN)?","answer":"The pinout follows the standard XA series single-row layout: positions 1 through 12 in a linear 2.50 mm pitch. The mating receptacle uses crimp terminals; the wiring order matches the header pin numbering on the PCB footprint."},{"question":"What is the closest functional second-source for B12B-XASK-1(LF)(SN)?","answer":"The B12B-XASK-1 (without the LF(SN) suffix) is functionally identical — same pitch, positions, current, voltage, and locking ramp. The only difference is the RoHS compliance marking; both are active."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"isd-matrix-langgraph","citationUrl":"https://icsourcedirect.com/jst/B12B-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/B12B-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}}