{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMBJ51CA","brand":"Bourns Inc.","brandSlug":"bourns-inc","productSlug":"1.5SMBJ51CA","canonicalUrl":"https://icboms.com/bourns-inc/1.5SMBJ51CA","factsUrl":"https://icboms.com/api/mcp/products/1.5SMBJ51CA","rawCanonicalId":null},"summary":{"shortDescription":"Bourns Inc. 1.5SMBJ series bidirectional Zener TVS diode, 1.5SMBJ51CA, 51V reverse standoff, 1500W peak pulse power, AEC-Q101 qualified, DO-214AA (SMB) surface mount package.","salesMarkdown":"## 1500 W peak pulse, AEC-Q101 qualified The 1.5SMBJ51CA: The -55°C to 150°C junction temperature range covers the full automotive thermal profile. ## Clamping and breakdown — the protection window Reverse standoff voltage is 51 V; the device starts conducting at 56.7 V minimum breakdown and clamps the transient to 82.4 V maximum at the rated 18.2 A peak pulse current. This 56.7 V to 82.4 V window means the protected rail sees no more than 82.4 V during a surge — well within the typical 100 V abs-max of downstream 48 V to 60 V-rated DC-DC converters and sensors. ## DO-214AA (SMB) — board-fit note The 1.5SMBJ51CA comes in the DO-214AA (SMB) package, a standard surface-mount footprint shared across the 1.5SMBJ family. The SMB body is larger than the SMA variant, which helps dissipate the 1500 W pulse without exceeding the junction temperature limit. The tape-and-reel packaging suits automated pick-and-place assembly.","metaTitle":"Bourns 1.5SMBJ51CA TVS Diode, 51V, 1500W, AEC-Q101, SMB","metaDescription":"Bourns 1.5SMBJ51CA bidirectional Zener TVS, 51V reverse standoff, 1500W peak pulse, 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","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","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":"$0.3525","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 1.5SMBJ51CA in this Circuit Protection family?","answer":"Within the 1.5SMBJ series, the 1.5SMBJ51A is the unidirectional version of the same 51 V, 1500 W TVS. The 1.5SMBJ51CA is bidirectional — both channels clamp in one package. For a bidirectional replacement, any 1.5SMBJxxCA with the same standoff voltage and package is a direct footprint match."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/bourns-inc/1.5SMBJ51CA","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 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}}