{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMBJ51CA-H","brand":"Bourns Inc.","brandSlug":"bourns-inc","productSlug":"1.5SMBJ51CA-H","canonicalUrl":"https://icboms.com/bourns-inc/1.5SMBJ51CA-H","factsUrl":"https://icboms.com/api/mcp/products/1.5SMBJ51CA-H","rawCanonicalId":null},"summary":{"shortDescription":"Bourns Inc. 1.5SMBJ series, Zener TVS diode, Automotive grade, AEC-Q101, 1500W peak pulse, 51V reverse standoff, bidirectional, DO-214AA (SMB), surface mount.","salesMarkdown":"## 1500W peak pulse, 51V standoff — the overvoltage clamp for 48V rails The 1.5SMBJ51CA-H: That 51V standoff sits just above a nominal 48V bus — the diode stays transparent during normal operation and clamps transients before they reach downstream silicon. The 1500W rating means it absorbs surges from load-dump events or inductive kickback without failing short. Automotive grade per AEC-Q101, the part is qualified for -55°C to 150°C junction temperature, covering under-hood and engine-bay thermal profiles. The DO-214AA (SMB) package is a standard surface-mount footprint — the same pad layout serves the whole 1.5SMBJ series, so a BOM swap between voltage variants needs no board spin. ## Active production — no last-time-buy pressure For a BOM engineer planning a multi-year production run, this part is not at risk of a surprise discontinuation — the 1.5SMBJ series is a mature, widely used platform.","metaTitle":"Bourns 1.5SMBJ51CA-H TVS Diode, 1500W, 51V, AEC-Q101","metaDescription":"Bourns 1.5SMBJ51CA-H bidirectional Zener TVS, 1500W peak pulse, 51V standoff, AEC-Q101 automotive grade. Active production, DO-214AA SMB. 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","Package":"Tape & Reel (TR) Cut Tape (CT)","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","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"SMB (DO-214AA)","Voltage - Breakdown (Min)":"56.7V","Voltage - Clamping (Max) @ Ipp":"82.4V","Voltage - Reverse Standoff (Typ)":"51V","Current - Peak Pulse (10/1000µs)":"18.2A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.8900","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/1.5SMBJ51CA-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/1.5SMBJ51CA-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}}