{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SM6T42AY","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SM6T42AY","canonicalUrl":"https://icboms.com/stmicroelectronics/SM6T42AY","factsUrl":"https://icboms.com/api/mcp/products/SM6T42AY","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SM6T42AY, Automotive AEC-Q101 TRANSIL™ TVS Zener, 600W peak pulse power, 36V reverse standoff, 76V clamping, 1 unidirectional channel, DO-214AA SMB surface mount, -55°C to 150°C.","salesMarkdown":"## Automotive-grade TVS for 36 V rails It delivers 600 W peak pulse power (10/1000 µs waveform) with a reverse standoff voltage of 36 V and a maximum clamping voltage of 76 V at the rated peak pulse current of 52 A (8/20 µs). The 36 V reverse standoff voltage (working voltage) means this diode will not conduct appreciably below 36 V, so it can sit across a 24 V or 28 V nominal rail without leakage issues. The minimum breakdown voltage is 40 V, giving a guard band before avalanche conduction starts. The 76 V clamping voltage is the maximum the diode will force the protected line to during a surge — that figure drives the downstream component voltage rating. For a 36 V standoff part, a 76 V clamp is typical for this power class; the 600 W peak pulse rating (10/1000 µs) defines the energy it can absorb in a single event. ## AEC-Q101 qualification and temperature range AEC-Q101 qualification is the automotive stress test for discrete semiconductors — it covers temperature cycling, high-temperature reverse bias, and humidity bias. The 150°C max junction temperature gives headroom when the diode is absorbing repetitive pulses in a warm enclosure. The SMB footprint is common across the SM6TY series, so a single PCB land pattern covers the whole voltage range from 5 V to 48 V standoff variants. No power line protection is claimed — this is a unidirectional transient suppressor, not a crowbar or polymer device. For volume production or dual-source planning, the SM6TY series includes multiple voltage options sharing the same DO-214AA footprint.","metaTitle":"SM6T42AY STMicroelectronics TVS Zener, 600W, AEC-Q101","metaDescription":"SM6T42AY automotive TVS Zener diode, 600W peak pulse, 36V standoff, 76V clamp, AEC-Q101 qualified.","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":"SM6T42","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)":"40V","Voltage - Clamping (Max) @ Ipp":"76V","Voltage - Reverse Standoff (Typ)":"36V","Current - Peak Pulse (10/1000µs)":"52A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.7200","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/3a95ac6513bab2f04fd61565540cbe6f.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SM6T42AY/alternatives.json"},"ai":{"faq":[{"question":"Is SM6T42AY AEC-Q101 qualified?","answer":"Yes, the SM6T42AY is part of the Automotive, AEC-Q101 qualified SM6TY series from STMicroelectronics."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SM6T42AY","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SM6T42AY 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}}