{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC51A-Q","brand":"Bourns Inc.","brandSlug":"bourns-inc","productSlug":"1.5SMC51A-Q","canonicalUrl":"https://icboms.com/bourns-inc/1.5SMC51A-Q","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC51A-Q","rawCanonicalId":null},"summary":{"shortDescription":"Bourns Inc. 1.5SMC-Q series, Zener TVS diode, 1500W peak pulse power, 43.6V reverse standoff, 70.1V clamping, DO-214AB SMC, AEC-Q101 qualified, active.","salesMarkdown":"The 1.5SMC51A-Q: It is the go-to clamp for 48 V DC buses in automotive and telecom gear — think infotainment power rails, ADAS sensor supplies, or base station line cards that need to survive a load dump without letting the downstream 48 V-to-3.3 V converter see a spike above 70 V. The AEC-Q101 qualification means this part passed the automotive-grade stress tests: high-temperature reverse bias, temperature cycling, and ESD robustness. ## Breakdown and clamping — the numbers that matter for the BOM The minimum breakdown voltage is 48.5 V, and the maximum clamping voltage is 70.1 V at 21.7 A. The 70.1 V clamp is the ceiling — any transient that pushes the bus above that gets shunted to ground through the 1500 W peak pulse capability. It is a unidirectional device, so it clamps positive transients relative to ground. For AC or bidirectional protection on signal lines, you would need two back-to-back or a bidirectional TVS — but on a DC power rail, this single diode is all you need.","metaTitle":"Bourns 1.5SMC51A-Q TVS Diode, 1500W, DO-214AB","metaDescription":"Bourns 1.5SMC51A-Q automotive AEC-Q101 Zener TVS, 1500W peak pulse, 43.6V standoff, 70.1V clamp. Active production, DO-214AB SMC. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Bourns Inc.","Type":"Zener","Series":"Automotive, AEC-Q101, 1.5SMC-Q","Package":"Tape & Reel (TR)","Applications":"Automotive, Telecom","Mounting Type":"Surface Mount","Package / Case":"DO-214AB, SMC","Product Status":"Active","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Operating Temperature":"-55°C~150°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"DO-214AB (SMC)","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"48.5V","Voltage - Clamping (Max) @ Ipp":"70.1V","Voltage - Reverse Standoff (Typ)":"43.6V","Current - Peak Pulse (10/1000µs)":"21.7A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.2805","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/00f8f6b6bc06cde1cd0f010601823fa9.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to the 1.5SMC51A-Q in the Bourns 1.5SMC family?","answer":"The 1.5SMC51A-Q is part of the Bourns 1.5SMC-Q series. The non-automotive version, the 1.5SMC51A (without the -Q suffix), is electrically identical — same 1500 W rating, same 43.6 V standoff, same DO-214AB package — but lacks the AEC-Q101 qualification. For a BOM that does not require automotive-grade PPAP, the standard 1.5SMC51A is a drop-in pin-compatible alternative."},{"question":"Where can I buy the 1.5SMC51A-Q and get a price?","answer":"The 1.5SMC51A-Q is sourced to order against an RFQ through independent and authorized distribution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/bourns-inc/1.5SMC51A-Q","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/bourns-inc/1.5SMC51A-Q 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}}