{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMBJ54CA-H","brand":"Bourns Inc.","brandSlug":"bourns-inc","productSlug":"1.5SMBJ54CA-H","canonicalUrl":"https://icboms.com/bourns-inc/1.5SMBJ54CA-H","factsUrl":"https://icboms.com/api/mcp/products/1.5SMBJ54CA-H","rawCanonicalId":null},"summary":{"shortDescription":"Bourns Inc. 1.5SMBJ Series Automotive TVS Diode, Type Zener, Bidirectional, 1500W Peak Pulse, 54V Reverse Standoff, DO-214AA (SMB), AEC-Q101 Qualified.","salesMarkdown":"## Active lifecycle and what it means for your BOM The 1.5SMBJ54CA-H: AEC-Q101 qualification confirms the part has passed automotive-grade stress tests including temperature cycling, high-temperature reverse bias, and ESD robustness — it is not a commercial-grade part running on automotive paperwork. ## Voltage rail protection — the three numbers that matter The 54 V reverse standoff voltage is the maximum continuous DC voltage the TVS can sit across without conducting leakage — your rail must stay at or below this level under normal operation. Breakdown occurs at a minimum of 60 V, meaning the device starts clamping between 60 V and roughly 66 V (typical tolerance). The clamping voltage peaks at 87.1 V when the full 17.3 A peak pulse current flows — this is the voltage the protected circuit must survive without latch-up or oxide rupture. Bidirectional means both polarities clamp symmetrically — one part protects a signal line against positive and negative transients, saving a second diode in series. ## 1500 W surge rating — what 10/1000 µs means on the bench A shorter pulse (e.g. 8/20 µs) allows higher peak current; a longer pulse derates the power. The 17.3 A figure is the current at that specific 10/1000 µs condition. Power derating above 25°C follows the Bourns datasheet curve; at 125°C ambient the effective pulse power drops to roughly 60% of the 1500 W rating. Housed in a DO-214AA (SMB) package — the industry-standard footprint for 1500 W TVS diodes in this voltage range. Surface-mount reflow profile per JEDEC J-STD-020; the package body is rated for MSL 1 (no moisture sensitivity bake required before reflow).","metaTitle":"Bourns 1.5SMBJ54CA-H TVS Diode, 1500W, Bidirectional","metaDescription":"Bourns 1.5SMBJ54CA-H automotive-grade TVS diode, 1500W peak pulse, 54V standoff, bidirectional, AEC-Q101 qualified. Active production, 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","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)":"60V","Voltage - Clamping (Max) @ Ipp":"87.1V","Voltage - Reverse Standoff (Typ)":"54V","Current - Peak Pulse (10/1000µs)":"17.3A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.8900","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 1.5SMBJ54CA-H in the same family?","answer":"The 1.5SMBJ series includes multiple voltage variants in the identical DO-214AA package and footprint. For a different standoff voltage, the base product number 1.5SMBJ covers the full voltage range from 5.0 V to 188 V in both unidirectional and bidirectional configurations — all share the same SMB footprint and 1500 W pulse rating."},{"question":"What compliance documentation does Bourns provide for 1.5SMBJ54CA-H?","answer":"The part is AEC-Q101 qualified for automotive stress reliability. Bourns publishes RoHS and REACH compliance declarations for the 1.5SMBJ series; the specific certificate of compliance is available on request. No UL or IEC certification is listed in the product record."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/bourns-inc/1.5SMBJ54CA-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/1.5SMBJ54CA-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}}