{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMBJ18A","brand":"Bourns Inc.","brandSlug":"bourns-inc","productSlug":"1.5SMBJ18A","canonicalUrl":"https://icboms.com/bourns-inc/1.5SMBJ18A","factsUrl":"https://icboms.com/api/mcp/products/1.5SMBJ18A","rawCanonicalId":null},"summary":{"shortDescription":"Bourns Inc. 1.5SMBJ Series Automotive Zener TVS Diode, 1.5SMBJ18A, 1500W (1.5kW) Peak Pulse Power, 18V Reverse Standoff, 29.2V Clamping, DO-214AA (SMB) Surface Mount, Tape & Reel.","salesMarkdown":"The 1.5SMBJ18A: The 18 V reverse standoff voltage (working voltage) means it sits across a nominal 12 V or 18 V rail and stays transparent until a transient drives the line above the 20 V minimum breakdown threshold. ## AEC-Q101 — what the automotive grade buys you The -55°C to +150°C junction temperature range covers under-hood and engine-bay thermal profiles — the 150°C upper limit gives margin above a 105°C ambient in a stopped vehicle on a hot day. Housed in the DO-214AA (SMB) package, the 1.5SMBJ18A uses the same footprint as the standard SMB diode — the cathode band and body dimensions match the JEDEC outline. The copper pad area under the SMB body sets the thermal resistance; for 1500 W pulse dissipation the PCB pad should match the recommended land pattern in the Bourns application note, not the minimum soldering pad.","metaTitle":"Bourns 1.5SMBJ18A TVS Diode, 18V Standoff, 1500W, DO-214AA","metaDescription":"Bourns 1.5SMBJ18A automotive-grade Zener TVS diode, 18V reverse standoff, 29.2V clamping, 1500W peak pulse power. AEC-Q101 qualified.","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","Package":"Tape & Reel (TR)","Applications":"General Purpose","Mounting Type":"Surface Mount","Qualification":"AEC-Q101","Package / Case":"DO-214AA, SMB","Product Status":"Active","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":"SMB (DO-214AA)","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"20V","Voltage - Clamping (Max) @ Ipp":"29.2V","Voltage - Reverse Standoff (Typ)":"18V","Current - Peak Pulse (10/1000µs)":"51.4A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.2159","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/ee1fb175d38950cd5a23672129674f6e.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMBJ18A/alternatives.json"},"ai":{"faq":[{"question":"Is the 1.5SMBJ18A AEC-Q101 qualified?","answer":"Yes, it carries AEC-Q101 qualification, certifying it for automotive-grade stress testing and PPAP documentation — suitable for under-hood and engine-bay applications."},{"question":"What package does the 1.5SMBJ18A come in?","answer":"The supplier device package is also listed as SMB (DO-214AA)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/bourns-inc/1.5SMBJ18A","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/bourns-inc/1.5SMBJ18A 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}}