{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SM30T15AY","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SM30T15AY","canonicalUrl":"https://icboms.com/stmicroelectronics/SM30T15AY","factsUrl":"https://icboms.com/api/mcp/products/SM30T15AY","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SM30T15AY automotive Zener TVS diode, 3000W peak pulse power, 13V reverse standoff, 14.3V breakdown, 21.5V clamping, 140A peak pulse current, unidirectional, DO-214AB (SMC), AEC-Q101 qualified, -55°C to 175°C.","salesMarkdown":"## Automotive-grade transient suppressor for 12V and 24V rails The 13V reverse standoff voltage suits 12V nominal rails, while the 21.5V clamping point limits the spike seen by downstream electronics. AEC-Q101 qualification confirms it meets the stress and reliability requirements for under-hood and chassis-mounted applications. The 3000W peak pulse rating (10/1000µs) is the headline surge capacity. For a 24V automotive system, the 13V standoff is too low — that rail needs a higher voltage device. On a 12V bus, the 140A peak pulse current gives substantial headroom for protecting ECUs, sensors, and infotainment modules against ISO 7637-2 pulses. ## Active production with AEC-Q101 traceability The AEC-Q101 qualification provides the lot-level traceability and stress-test documentation that automotive Tier-1 and OEM buyers require for PPAP submissions. The base product number SM30T15 covers a family of voltage variants in the same package, simplifying BOM consolidation across multiple rail voltages.","metaTitle":"SM30T15AY TVS Diode, 3000W, AEC-Q101, DO-214AB (SMC)","metaDescription":"SM30T15AY automotive Zener TVS diode, 3000W peak pulse power, 13V standoff, AEC-Q101 qualified. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"STMicroelectronics","Type":"Zener","Grade":"Automotive","Series":"*","Package":"Tape & Reel (TR) Cut Tape (CT)","Applications":"-","Mounting Type":"Surface Mount","Qualification":"AEC-Q101","Package / Case":"DO-214AB, SMC","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"3000W (3kW)","Base Product Number":"SM30T15","Operating Temperature":"-55°C ~ 175°C (TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"SMC","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"14.3V","Voltage - Clamping (Max) @ Ipp":"21.5V","Voltage - Reverse Standoff (Typ)":"13V","Current - Peak Pulse (10/1000µs)":"140A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.3500","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/c1da1532b421560a6148be51fb30338a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is SM30T15AY RoHS compliant and AEC-Q101 qualified?","answer":"Yes, the SM30T15AY is AEC-Q101 qualified, meeting automotive stress and reliability standards. RoHS compliance is standard for current-production STMicroelectronics parts in this series."},{"question":"Can SM30T15AY be used for 24V automotive systems?","answer":"No — the 13V reverse standoff voltage is intended for 12V nominal rails. For a 24V system (typical in trucks and heavy equipment), select a TVS with a standoff voltage above 24V, such as a higher-voltage variant in the SM30T family."},{"question":"What is the difference between SM30T15AY and SMCJ30A?","answer":"Both are 3000W TVS diodes in the DO-214AB package, but the SM30T15AY is AEC-Q101 qualified for automotive use, while the SMCJ30A is a general-purpose commercial-grade part. The SM30T15AY also has a 13V standoff versus the SMCJ30A's 30V standoff — they protect different rail voltages."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SM30T15AY","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SM30T15AY 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}}