{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SM15T30CA","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SM15T30CA","canonicalUrl":"https://icboms.com/stmicroelectronics/SM15T30CA","factsUrl":"https://icboms.com/api/mcp/products/SM15T30CA","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SM15T30CA, TRANSIL™ series, bidirectional TVS diode, 1500W peak pulse power, 53.5V clamping, 187A peak pulse current, DO-214AB (SMC) surface mount package, -55°C to 150°C junction temperature.","salesMarkdown":"## What this TRANSIL™ bidirectional TVS does on the board It is a general-purpose protection device, not a voltage regulator — the Zener label refers to the avalanche breakdown mechanism used for clamping, not for regulation duty. Rated for 1500W peak pulse power (1.5kW) per the 10/1000µs waveform, it handles a peak pulse current of 187A on the 8/20µs waveform, clamping a 25.6V standoff rail to a maximum of 53.5V before the silicon gives way. For a 24V nominal rail (common in industrial and automotive systems), the 25.6V reverse standoff voltage sits comfortably above the steady-state supply, while the 53.5V clamp gives the downstream DC-DC converter or load switch a hard ceiling during a surge. The 28.5V minimum breakdown voltage means the device starts conducting at a level that won't nuisance-trip on normal ripple, but will catch a 30V transient before it reaches the protected IC. No power line protection is built in — this is a line-to-ground clamp, not a series protector. ## Package and footprint — DO-214AB (SMC) Housed in a DO-214AB (SMC) surface-mount package, the SM15T30CA takes the standard SMC footprint. The SMC body is larger than the smaller SMA/SMB packages, which matters for the thermal mass needed to absorb the 1500W pulse without exceeding the 150°C junction limit. Surface-mount only — no through-hole variant in this order code.","metaTitle":"STMicroelectronics SM15T30CA TVS Diode, Bidirectional, 1500W","metaDescription":"STMicroelectronics SM15T30CA bidirectional TVS diode, 1500W peak pulse power, 53.5V clamping, 187A peak current. 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":"SM15T30","Operating Temperature":"-55°C~150°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"SMC","Voltage - Breakdown (Min)":"28.5V","Voltage - Clamping (Max) @ Ipp":"53.5V","Voltage - Reverse Standoff (Typ)":"25.6V","Current - Peak Pulse (10/1000µs)":"187A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.9000","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/539ce92ad6505c8a9d704773ec1ef151.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SM15T30CA/alternatives.json"},"ai":{"faq":[{"question":"Is the SM15T30CA bidirectional or unidirectional?","answer":"It is a bidirectional TVS, clamping both positive and negative transients on a single line. The evidence lists one bidirectional channel."},{"question":"What is the peak pulse current of the SM15T30CA?","answer":"The peak pulse current is 187A, specified with an 8/20µs waveform."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SM15T30CA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SM15T30CA 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}}