{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SM6T10AY","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SM6T10AY","canonicalUrl":"https://icboms.com/stmicroelectronics/SM6T10AY","factsUrl":"https://icboms.com/api/mcp/products/SM6T10AY","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SM6T10AY, Automotive Zener TVS Diode, 600W Peak Pulse Power, 8.55V Reverse Standoff, 9.5V Breakdown Min, 18.6V Clamping, AEC-Q101, DO-214AA (SMB) Surface Mount, -55°C to 150°C.","salesMarkdown":"## 600 W peak pulse — what it protects The STMicroelectronics SM6T10AY is a unidirectional Zener TVS diode in the DO-214AA (SMB) surface-mount package, rated for 600 W peak pulse power per the 10/1000 µs waveform. It clamps transients at 18.6 V maximum when the surge current hits 215 A (8/20 µs pulse). The 8.55 V reverse standoff voltage means it sits across a 5 V or 3.3 V rail without leaking appreciably under normal operation, and the 9.5 V minimum breakdown voltage gives a clean trigger threshold before the silicon starts conducting. This is the part you spec when a 24 V automotive battery line, an alternator load-dump, or an inductive kick from a relay coil needs a defined crowbar point — and the AEC-Q101 stamp means it has passed the thermal shock, HTRB, and surge-life tests that a commercial TVS skips. ## AEC-Q101 — why the 'Y' suffix matters The 'Y' in SM6T10AY flags the AEC-Q101 qualification — the automotive stress test suite that includes 1000-hour high-temperature reverse bias, temperature cycling, and surge endurance at elevated junction temperature. Without that suffix (the plain SM6T10A) you get the same silicon in the same package but without the automotive-level screening. For an ECU, a BMS, or any module that ships under a PPAP requirement, the 'Y' variant is the one that keeps the OEM quality audit clean. ## Package and temperature range The DO-214AA (SMB) body is a standard footprint shared with many SMBJ and P6SMB series parts, so a board already laid out for a 600 W SMB TVS takes this without a layout change. Operating junction temperature runs from -55°C to 150°C, which covers the under-hood ambient plus self-heating during a surge event. The MSL is level 1 — no bake required before reflow if the sealed reel is intact.","metaTitle":"STMicroelectronics SM6T10AY TVS Diode, 600W, AEC-Q101","metaDescription":"Automotive-grade Zener TVS diode, 600W peak pulse power, 8.55V reverse standoff, AEC-Q101 qualified. Available to order in DO-214AA (SMB) surface mount.","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-214AA, SMB","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"600W","Base Product Number":"SM6T10","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)":"9.5V","Voltage - Clamping (Max) @ Ipp":"18.6V","Voltage - Reverse Standoff (Typ)":"8.55V","Current - Peak Pulse (10/1000µs)":"215A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6700","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/3a95ac6513bab2f04fd61565540cbe6f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Does SM6T10AY have AEC-Q101 qualification?","answer":"Yes, the SM6T10AY is AEC-Q101 qualified. That is the automotive-grade stress test suite covering high-temperature reverse bias, temperature cycling, and surge endurance. The 'Y' suffix on the order code specifically denotes this qualification level."},{"question":"What is the difference between SM6T10AY and SM6T10A?","answer":"The SM6T10AY and SM6T10A share identical electrical characteristics — same 600 W peak pulse power, same 8.55 V standoff, same 18.6 V clamping voltage, same DO-214AA package. The only difference is the AEC-Q101 qualification on the 'Y' variant. The SM6T10A is the commercial/industrial grade; the SM6T10AY adds the automotive stress screening for PPAP-compliant designs."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SM6T10AY","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SM6T10AY when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T14:50:14.293Z","lastPublished":"2026-07-16T14:50:14.293Z","indexable":true}}