{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SM6T18AY","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SM6T18AY","canonicalUrl":"https://icboms.com/stmicroelectronics/SM6T18AY","factsUrl":"https://icboms.com/api/mcp/products/SM6T18AY","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SM6T18AY, Automotive AEC-Q101 TRANSIL™ Zener, 600W peak pulse power, 15.3V reverse standoff, 32.5V clamping, DO-214AA SMB, surface mount.","salesMarkdown":"## 600W Zener clamp for 15 V rails The STMicroelectronics SM6T18AY is a 600W peak pulse power Zener diode from the automotive-grade SM6TY TRANSIL™ series. It is designed to clamp transients on a 15.3 V reverse standoff rail, with a minimum breakdown voltage of 17.1 V and a maximum clamping voltage of 32.5 V at the peak pulse current. ## Package and footprint for SMB (DO-214AA) The SMB footprint is a common size for 600 W TVS diodes and matches the land pattern used by many other automotive transient suppressors in this power class.","metaTitle":"STMicroelectronics SM6T18AY Zener, 600W, 15.3V, AEC-Q101","metaDescription":"STMicroelectronics SM6T18AY automotive Zener diode, 600W peak pulse power, 15.3V standoff, 32.5V clamping, AEC-Q101 qualified, DO-214AA SMB.","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, SM6TY, TRANSIL™","Package":"Tape & Reel (TR); Cut Tape (CT)","Applications":"Automotive","Mounting Type":"Surface Mount","Package / Case":"DO-214AA, SMB","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"600W","Base Product Number":"SM6T18","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)":"17.1V","Voltage - Clamping (Max) @ Ipp":"32.5V","Voltage - Reverse Standoff (Typ)":"15.3V","Current - Peak Pulse (10/1000µs)":"123A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.0500","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/3a95ac6513bab2f04fd61565540cbe6f.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SM6T18AY/alternatives.json"},"ai":{"faq":[{"question":"Is SM6T18AY RoHS compliant?","answer":"The SM6T18AY is listed as RoHS compliant per the manufacturer's documentation."},{"question":"Is SM6T18AY suitable for automotive applications?","answer":"Yes, it is part of the Automotive SM6TY series and is AEC-Q101 qualified, making it suitable for automotive environments including under-hood and engine bay locations."},{"question":"Can SM6T18AY replace SM6T18A?","answer":"The SM6T18AY is the automotive-qualified (AEC-Q101) version of the SM6T18A. The electrical characteristics — breakdown voltage, standoff voltage, clamping voltage, and peak pulse power — are the same, so it is a drop-in replacement where automotive qualification is required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SM6T18AY","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SM6T18AY 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}}