{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMBJ26A-H","brand":"Bourns Inc.","brandSlug":"bourns-inc","productSlug":"1.5SMBJ26A-H","canonicalUrl":"https://icboms.com/bourns-inc/1.5SMBJ26A-H","factsUrl":"https://icboms.com/api/mcp/products/1.5SMBJ26A-H","rawCanonicalId":null},"summary":{"shortDescription":"Bourns Inc. 1.5SMBJ series, Zener TVS diode, Automotive grade, 1500W peak pulse power, 26V reverse standoff, 42.1V clamping, DO-214AA (SMB) surface mount, AEC-Q101 qualified.","salesMarkdown":"## What this TVS clamps and where it fits The 1.5SMBJ26A-H: It protects a single 24 V nominal rail — the 26 V reverse standoff means it stays off the bus during normal operation, then clamps at 42.1 V when the surge current hits 35.7 A. ## Clamping window and the 24 V rail decision The 26 V standoff voltage sits comfortably above a nominal 24 V bus — even with a 10 % tolerance (26.4 V) the TVS stays in standby. Breakdown starts at 28.9 V minimum, and the clamping voltage at peak pulse current is 42.1 V. That 42.1 V ceiling must stay below the downstream IC's abs-max rating; a 40 V-rated regulator or 60 V-rated MOSFET has margin, but a 36 V-rated part does not. Power line protection is marked 'No' — this is a transient suppressor, not a continuous overvoltage clamp. If the rail sits above 26 V for more than a few milliseconds, the TVS enters breakdown and the junction temperature climbs until the part fails. The 1500 W rating assumes a single 10/1000 µs pulse at 25°C; derate for ambient temperature and repetitive surges per the datasheet curve. ## Package and board integration DO-214AA (SMB) surface-mount package — the same footprint as the rest of the 1.5SMBJ family. Two-pad layout with the cathode marked by a band. The copper pad area under the package sets the thermal resistance; for a 1500 W pulse the junction-to-board path needs a solid pour on the cathode side to spread the heat. Standard reflow profile for a JEDEC MSL-1 device.","metaTitle":"Bourns 1.5SMBJ26A-H TVS Diode, 1500W, 26V Standoff, DO-214AA","metaDescription":"Bourns 1.5SMBJ26A-H automotive-grade TVS diode, 1500W peak pulse power, 26V standoff, AEC-Q101 qualified. Active production, sourced to order. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Bourns Inc.","Type":"Zener","Grade":"Automotive","Series":"1.5SMBJ","Packaging":"Tape & Reel (TR) Cut Tape (CT)","Part Status":"Active","Applications":"General Purpose","Mounting Type":"Surface Mount","Qualification":"AEC-Q101","Package / Case":"DO-214AA, SMB","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5SMBJ","Operating Temperature":"-55°C ~ 150°C (TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"DO-214AA (SMB)","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"28.9V","Voltage - Clamping (Max) @ Ipp":"42.1V","Voltage - Reverse Standoff (Typ)":"26V","Current - Peak Pulse (10/1000µs)":"35.7A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.8100","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/ee1fb175d38950cd5a23672129674f6e.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What automotive qualification does 1.5SMBJ26A-H carry?","answer":"AEC-Q101 qualified, which covers the -55°C to 150°C junction temperature range and the reliability stress tests required for automotive-grade semiconductors."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/bourns-inc/1.5SMBJ26A-H","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/bourns-inc/1.5SMBJ26A-H when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}