{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SM30T7.5AY","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SM30T7.5AY","canonicalUrl":"https://icboms.com/stmicroelectronics/SM30T7.5AY","factsUrl":"https://icboms.com/api/mcp/products/SM30T7.5AY","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SM30T7.5AY, Automotive AEC-Q101 TRANSIL™ Zener TVS diode, 6.5 V reverse standoff, 11.2 V clamping, 3 kW peak pulse power, 268 A peak pulse current (10/1000 µs), single unidirectional channel, DO-214AB SMC package, -55 to 175 °C operating junction temperature.","salesMarkdown":"## 3 kW automotive TVS in a DO-214AB SMC package The SM30T7.5AY is a unidirectional Zener-based TVS diode from STMicroelectronics, part of the TRANSIL™ SM30TY series qualified to AEC-Q101 for automotive applications. It provides a peak pulse power rating of 3000 W (3 kW) for a 10/1000 µs waveform, clamping transients at 11.2 V maximum while conducting up to 268 A peak pulse current. The 6.5 V reverse standoff voltage protects 5 V and 3.3 V rails in automotive ECUs, ADAS sensors, and body-control modules where voltage spikes from load dump, alternator ripple, or inductive switching must be absorbed. ## What AEC-Q101 grade means for your PPAP AEC-Q101 qualification is the hard gate for any semiconductor in an automotive BOM. An industrial-grade TVS with the same standoff voltage would lack the high-temperature reverse-bias (HTRB) and power-temperature cycling (PTC) data that an auditor will ask for. If your design targets a production line, this part gives you the paperwork traceable to the wafer lot. ## Clamping behavior and rail protection The 6.5 V reverse standoff voltage (VRWM) means the SM30T7.5AY will not conduct leakage current on a 5 V supply rail under normal operation. Breakdown voltage starts at 7.13 V minimum, so the part remains out of the circuit until a transient pushes the rail above that threshold. The clamping voltage is specified at 11.2 V maximum when the full 268 A peak pulse current flows — that clamp margin protects downstream 5 V logic, CAN transceivers, or sensor ICs from exceeding their absolute maximum ratings during a 3 kW surge. Power line protection is not provided (the device is unidirectional), so it is intended for single-ended rail clamping, not AC or bidirectional bus protection.","metaTitle":"SM30T7.5AY STMicroelectronics TVS Diode, 3 kW, AEC-Q101","metaDescription":"SM30T7.5AY automotive Zener TVS diode from STMicroelectronics, 6.5 V standoff, 11.2 V clamp, 3 kW peak pulse power, AEC-Q101 qualified, -55 to 175 °C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"STMicroelectronics","Type":"Zener","Series":"Automotive, AEC-Q101, SM30TY, TRANSIL™","Package":"Tape & Reel (TR); Cut Tape (CT)","Applications":"Automotive","Mounting Type":"Surface Mount","Package / Case":"DO-214AB, SMC","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"3000W (3kW)","Base Product Number":"SM30T7.5","Operating Temperature":"-55°C~175°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"SMC","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"7.13V","Voltage - Clamping (Max) @ Ipp":"11.2V","Voltage - Reverse Standoff (Typ)":"6.5V","Current - Peak Pulse (10/1000µs)":"268A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5592","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/c1da1532b421560a6148be51fb30338a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is SM30T7.5AY AEC-Q101 qualified?","answer":"Yes, the SM30T7.5AY is part of the Automotive, AEC-Q101, SM30TY, TRANSIL™ series, which means it meets the AEC-Q101 stress-test qualification for automotive semiconductors."},{"question":"Is SM30T7.5AY equivalent to other TVS diodes?","answer":"The SM30T7.5AY is a unidirectional Zener TVS with a 6.5 V standoff, 3 kW peak pulse power, and AEC-Q101 qualification. A functionally similar TVS from another manufacturer would need the same DO-214AB footprint, 6.5 V VRWM, and 3 kW rating to be a drop-in substitute. Because the AEC-Q101 qualification and TRANSIL series characteristics are specific to STMicroelectronics, verify surge testing and clamping voltage with any alternative before substituting."},{"question":"Where can I buy SM30T7.5AY?","answer":"The SM30T7.5AY is an active STMicroelectronics part available through independent distribution. Submit an RFQ through this listing for a firm quote and lead-time confirmation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SM30T7.5AY","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SM30T7.5AY when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T14:50:23.697Z","lastPublished":"2026-07-16T14:50:23.697Z","indexable":true}}