{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMBJ48CA","brand":"Bourns Inc.","brandSlug":"bourns-inc","productSlug":"1.5SMBJ48CA","canonicalUrl":"https://icboms.com/bourns-inc/1.5SMBJ48CA","factsUrl":"https://icboms.com/api/mcp/products/1.5SMBJ48CA","rawCanonicalId":null},"summary":{"shortDescription":"Bourns Inc. 1.5SMBJ series bidirectional TVS diode, Type Zener, 1.5SMBJ48CA, 1500W peak pulse power, 48V reverse standoff, DO-214AA (SMB) surface mount package.","salesMarkdown":"The 1.5SMBJ48CA: That 1500 W rating means it can clamp a 19.4 A surge (the peak pulse current at that waveform) without the junction exceeding its temperature limit — the energy is absorbed and dissipated as heat through the DO-214AA package. ## Protection window: 48 V standoff, 77.4 V clamp The reverse standoff voltage is 48 V — the line voltage it sits across without conducting. Breakdown starts at 53.3 V minimum, and the clamping voltage peaks at 77.4 V at the rated surge current. That 24 V spread between standoff and clamp defines the protection margin: the downstream circuitry must survive the clamped voltage during the surge event. No need for two unidirectional diodes in anti-series. Operating junction temperature range spans -55°C to 150°C, so it holds its breakdown voltage and leakage specs across industrial and under-hood automotive environments without derating the peak pulse power. ## Package and field-swap note The body is large enough to hand-solder with a fine-tip iron if you are replacing one on a board without a hot-air station — just pre-tin one pad, align, reflow, then solder the second. The cathode band is absent on a bidirectional part, so orientation does not matter; it goes either way. The 1.5SMBJ series is a standard catalog product, so supply continuity is typical for a mainstream TVS diode in this package and power class.","metaTitle":"Bourns 1.5SMBJ48CA TVS Diode, 48V, 1500W, DO-214AA","metaDescription":"Bourns 1.5SMBJ48CA bidirectional TVS diode, 48V reverse standoff, 1500W peak pulse power, DO-214AA SMB package. Active lifecycle, sourced to order.","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)":"53.3V","Voltage - Clamping (Max) @ Ipp":"77.4V","Voltage - Reverse Standoff (Typ)":"48V","Current - Peak Pulse (10/1000µs)":"19.4A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.9400","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/ee1fb175d38950cd5a23672129674f6e.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to 1.5SMBJ48CA?","answer":"The 1.5SMBJ series shares the DO-214AA footprint with other 1500 W TVS diodes from multiple manufacturers — parametric matching on standoff voltage (48 V), breakdown range, and clamping voltage is required before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/bourns-inc/1.5SMBJ48CA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/bourns-inc/1.5SMBJ48CA 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}}