{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SM6T220A","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SM6T220A","canonicalUrl":"https://icboms.com/stmicroelectronics/SM6T220A","factsUrl":"https://icboms.com/api/mcp/products/SM6T220A","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SM6T220A, TRANSIL™ series, unidirectional TVS diode, 600W peak pulse power, 209V min breakdown, 188V reverse standoff, 388V clamping @ 10.3A, DO-214AA (SMB) surface mount, -55°C to 150°C.","salesMarkdown":"The STMicroelectronics SM6T220A is a 600W unidirectional TVS diode from the TRANSIL™ family, built on Zener technology. It is designed to clamp transients on a 188V continuous DC rail — the reverse standoff voltage — and responds to overvoltage events by breaking down at a minimum of 209V, limiting the clamped voltage to 388V at the peak pulse current of 10.3A (8/20µs waveform). The base product number SM6T220 covers the full family; the 'A' suffix denotes a tighter breakdown tolerance variant. ## Package and mounting — standard SMB footprint The DO-214AA (SMB) package is a surface-mount, two-lead form factor with a standard land pattern. ## No power line protection — use it on signal or DC bus The SM6T220A is explicitly marked as having no power line protection. That means it is intended for data lines, low-voltage DC buses, or auxiliary rails — not for direct AC mains clamping. The 188V standoff is high enough for a 150V DC bus or a 120VAC rectified rail, but the 600W pulse rating and the unidirectional construction point to a single-polarity transient clamp on a DC supply or signal line.","metaTitle":"STMicroelectronics SM6T220A TVS Diode, 600W, 188V Standoff","metaDescription":"SM6T220A unidirectional TVS diode from STMicroelectronics. 600W peak pulse power, 209V breakdown, 188V standoff, 388V clamping.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"STMicroelectronics","Type":"Zener","Series":"SM6T, TRANSIL™","Package":"Tape & Reel (TR); Cut Tape (CT)","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"DO-214AA, SMB","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"600W","Base Product Number":"SM6T220","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)":"209V","Voltage - Clamping (Max) @ Ipp":"388V","Voltage - Reverse Standoff (Typ)":"188V","Current - Peak Pulse (10/1000µs)":"10.3A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5700","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/1e6a6ede6221d6b6009e7d617f0a0cd9.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SM6T220A","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SM6T220A when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T14:29:17.043Z","lastPublished":"2026-07-16T14:29:17.043Z","indexable":true}}