{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SM15T220A","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SM15T220A","canonicalUrl":"https://icboms.com/stmicroelectronics/SM15T220A","factsUrl":"https://icboms.com/api/mcp/products/SM15T220A","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SM15T220A, TRANSIL™ series, Zener TVS diode, 188 V reverse standoff, 209 V breakdown, 388 V clamping, 1500 W peak pulse power, 26 A (8/20 µs), unidirectional, DO-214AB SMC package, surface mount, -55°C to 150°C junction.","salesMarkdown":"The SM15T220A: That removes the lifecycle risk from a new design or a running BOM — no need to stockpile or qualify a substitute preemptively. ## Clamping voltage and standoff — what they mean for protection The 188 V reverse standoff voltage is the maximum DC or peak AC voltage the TVS can withstand without conducting appreciably — your normal rail should stay below this. When a surge hits, the device breaks down at 209 V minimum and clamps the transient to 388 V maximum at the rated peak pulse current of 26 A (8/20 µs waveform). ## 1500 W peak pulse power — sizing the protection The 1500 W (1.5 kW) peak pulse power rating applies to the 10/1000 µs waveform. For shorter pulses, such as the 8/20 µs waveform used in IEC 61000-4-5, the device can handle significantly higher peak current — the 26 A figure is for that shorter pulse. When you size the TVS, match the waveform and energy of your expected surge to the datasheet curves; the 1500 W number is a reference point, not a hard limit across all pulse shapes. ## Package and temperature range Housed in the DO-214AB (SMC) surface-mount package, the SM15T220A uses the same footprint as other 1500 W TVS diodes from ST and competitors — a standard land pattern that simplifies board layout. No power line protection is built in (the part is unidirectional), so for AC mains protection you would need a bidirectional or two devices back-to-back.","metaTitle":"STMicroelectronics SM15T220A TVS Diode, 1500 W, DO-214AB","metaDescription":"STMicroelectronics SM15T220A TRANSIL™ TVS diode, 188 V standoff, 1500 W peak pulse power, DO-214AB SMC package. Active lifecycle.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"STMicroelectronics","Type":"Zener","Series":"SM15T, TRANSIL™","Package":"Tape & Reel (TR); Cut Tape (CT)","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"DO-214AB, SMC","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"SM15T220","Operating Temperature":"-55°C~150°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"SMC","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"209V","Voltage - Clamping (Max) @ Ipp":"388V","Voltage - Reverse Standoff (Typ)":"188V","Current - Peak Pulse (10/1000µs)":"26A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.9200","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/539ce92ad6505c8a9d704773ec1ef151.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SM15T220A","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SM15T220A when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T15:19:17.706Z","lastPublished":"2026-07-16T15:19:17.706Z","indexable":true}}