{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMBJ33CA","brand":"Bourns Inc.","brandSlug":"bourns-inc","productSlug":"1.5SMBJ33CA","canonicalUrl":"https://icboms.com/bourns-inc/1.5SMBJ33CA","factsUrl":"https://icboms.com/api/mcp/products/1.5SMBJ33CA","rawCanonicalId":null},"summary":{"shortDescription":"Bourns Inc. 1.5SMBJ series TVS diode, Zener type, 1500W peak pulse power, 33V reverse standoff, bidirectional, DO-214AA SMB package, Tape & Reel.","salesMarkdown":"## What the 1500W rating means on your board The 1.5SMBJ33CA: That 1.5kW figure is the energy it can clamp in a single surge event — enough to absorb an inductive kick from a relay coil or a 28.2A peak pulse current without the die fracturing. The 33V reverse standoff means it sits across a 24V or 28V DC rail and stays off until a transient pushes past 36.7V breakdown, then clamps at 53.3V max. This part is not rated for power-line protection — the 1500W pulse rating assumes a signal or DC bus application, not repeated AC mains surges. The DO-214AA (SMB) package is a standard surface-mount footprint; the same pad layout serves many TVS diodes in this power class, so a last-minute BOM swap to a different SMB-packaged part usually keeps the board spin the same. ## Temperature range and deployment context The 150°C upper limit is the die temperature during a pulse — the ambient at the package body will be lower, but the margin means this part survives a hot engine bay with the alternator load-dump transient hitting the rail. The single bidirectional channel protects a signal pair or a single DC line against positive and negative transients with one component — useful on CAN bus, RS-485, or 24V sensor inputs where the polarity can reverse during a fault. ## Sourcing and lifecycle posture The 1.5SMBJ series is a mature, high-volume line, so supply through authorized and independent channels is stable.","metaTitle":"Bourns 1.5SMBJ33CA TVS Diode, 33V, 1500W, DO-214AA","metaDescription":"Bourns 1.5SMBJ33CA bidirectional TVS diode, 33V reverse standoff, 1500W peak pulse power, DO-214AA SMB. 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","Series":"1.5SMBJ","Package":"Tape & Reel (TR) Cut Tape (CT)","Applications":"General Purpose","Mounting Type":"Surface Mount","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","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"SMB (DO-214AA)","Voltage - Breakdown (Min)":"36.7V","Voltage - Clamping (Max) @ Ipp":"53.3V","Voltage - Reverse Standoff (Typ)":"33V","Current - Peak Pulse (10/1000µs)":"28.2A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6500","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/ee1fb175d38950cd5a23672129674f6e.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/bourns-inc/1.5SMBJ33CA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/bourns-inc/1.5SMBJ33CA 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}}