{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMBJ85A","brand":"Bourns Inc.","brandSlug":"bourns-inc","productSlug":"1.5SMBJ85A","canonicalUrl":"https://icboms.com/bourns-inc/1.5SMBJ85A","factsUrl":"https://icboms.com/api/mcp/products/1.5SMBJ85A","rawCanonicalId":null},"summary":{"shortDescription":"Bourns Inc. 1.5SMBJ85A, Zener TVS diode, Automotive Grade, AEC-Q101 qualified, 85V Reverse Standoff, 1500W Peak Pulse Power, DO-214AA (SMB), Tape & Reel.","salesMarkdown":"## Automotive-grade transient suppressor for 85 V rails The 1.5SMBJ85A: AEC-Q101 qualification places this part in the automotive temperature grade, rated for junction temperatures from -55°C to 150°C. That means it is suited for under-hood and chassis-mounted ECU power stages where the ambient sees continuous heat soak and cold-crank transients. ## Clamping performance and pulse current capability At the 10/1000 µs test waveform, the 1.5SMBJ85A handles an 11 A peak pulse current before the clamping voltage reaches 137 V. The 85 V standoff means it sits across a nominal 85 V DC bus without leakage issues, and the 94.4 V minimum breakdown ensures the avalanche region is entered well before the downstream silicon sees overstress. For a 10/1000 µs surge, this part clamps at 137 V — the margin above the 85 V rail is 52 V, which is the voltage the load must withstand. Housed in the DO-214AA (SMB) package, this is a surface-mount device supplied on Tape & Reel. The SMB footprint is standard for 1.5 kW TVS diodes and shares a common land pattern with many SMC parts, though the body height differs. The supplier device package is SMB (DO-214AA) — confirm the solder paste stencil aperture for the 1500 W die attach pad to avoid voiding under reflow. The junction temperature rating is the absolute-max limit — derate the peak pulse power above 25°C per the thermal derating curve in the Bourns datasheet. ## Sourcing and lifecycle posture The AEC-Q101 certification is documented and available with the shipment.","metaTitle":"Bourns 1.5SMBJ85A TVS Diode, 85V Standoff, DO-214AA","metaDescription":"Bourns 1.5SMBJ85A Zener TVS diode, 85V reverse standoff, 1500W peak pulse power, AEC-Q101 qualified, DO-214AA (SMB) package. Active production.","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)":"94.4V","Voltage - Clamping (Max) @ Ipp":"137V","Voltage - Reverse Standoff (Typ)":"85V","Current - Peak Pulse (10/1000µs)":"11A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3210","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/1.5SMBJ85A","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/bourns-inc/1.5SMBJ85A 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}}