{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC82A-M3/9AT","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5SMC82A-M3-9AT","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC82A-M3-9AT","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC82A-M3%2F9AT","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor Zener TVS, 1.5SMC82A-M3/9AT, unidirectional 1-channel, 70.1V reverse standoff, 113V clamping @ 13.3A peak pulse, 1.5 kW peak pulse power, -65°C to 150°C junction, DO-214AB SMC surface-mount.","salesMarkdown":"## What the clamping ratings mean for your circuit The 1.5SMC82A-M3/9AT: The 77.9 V minimum breakdown confirms the diode activates in the TVS region rather than creeping on at normal operating voltage. At the peak pulse condition of 13.3 A (10/1000 µs wave shape), the clamping voltage is held to 113 V maximum — that 113 V ceiling is what the downstream circuitry must survive. Peak pulse power handling is 1.5 kW, which is the product of that clamping voltage and the peak current, so the part is sized for the 10/1000 µs surge class common in industrial and power-supply environments rather than the faster 8/20 µs waveform. The unidirectional configuration clips positive transients only — if the protected line can see negative spikes (common on inductive kickoff), a complementary bidirectional part or a separate reverse-polarity clamp is needed on the negative side. ## Thermal margin and the wide junction temperature range For a TVS that absorbs surge energy as heat, the derating curve in the Vishay datasheet governs how much of the 1.5 kW rating survives at elevated ambient — always run that check at the worst-case enclosure temperature before locking in the thermal layout. ## DO-214AB SMC package and rework reality The SMC (DO-214AB) package is a two-terminal EIA-style outline — cathode band marking identifies pin 1 on the Zener-oriented part, so orientation under hot air is unambiguous. The wide cathode pad gives a decent thermal path for the 13.3 A peak pulse current during a surge event, but the diode dissipates that energy as heat into the board copper, not through the package top. Layout rule of thumb: keep the cathode pad and surrounding copper generous — a thin pad starves the clamping performance under a real surge. As a surface-mount part on tape and reel, it fits the standard pick-and-place flow. The DO-214AB footprint is widely supported in almost every TVS family, so swapping to a second-source or a tighter/higher clamping variant is usually a layout-compatible change. ## What the 1.5SMC family is built for The 1.5SMC TransZorb series targets secondary-side protection in power-supply rails, DC bus clamping, and signal-line surge suppression — general-purpose means it is not qualified to any automotive or IEC 61800 immunity profile by default. If the target application requires compliance to a specific standard (such as IEC 61000-4-5 surge), the datasheet immunity curves need to be reviewed against the system's required test level.","metaTitle":"Vishay 1.5SMC82A-M3/9AT TVS Diode, 70.1V Standoff","metaDescription":"Vishay 1.5SMC82A-M3/9AT unidirectional Zener TVS, 70.1V standoff / 113V clamping, 1.5 kW peak pulse. DO-214AB SMC surface-mount. Active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Vishay General Semiconductor - Diodes Division","Type":"Zener","Series":"1.5SMC, TransZorb®","Package":"Tape & Reel (TR)","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"DO-214AB, SMC","Product Status":"Active","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5SMC82","Operating Temperature":"-65°C~150°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"DO-214AB (SMCJ)","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"77.9V","Voltage - Clamping (Max) @ Ipp":"113V","Voltage - Reverse Standoff (Typ)":"70.1V","Current - Peak Pulse (10/1000µs)":"13.3A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3333","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/de7dd597f6fdc3f56660f78f3e5a960d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMC82A-M3%2F9AT/alternatives.json"},"ai":{"faq":[{"question":"Where can I source the 1.5SMC82A-M3/9AT and how do I get a quote?","answer":"Lead time varies by order size and current demand, so request a quote to get a specific date against your BOM quantity."},{"question":"What series does the 1.5SMC82A-M3/9AT belong to, and what does TransZorb mean?","answer":"The part is from the 1.5SMC series, which Vishay brands as TransZorb — a Zener-based transient voltage suppressor architecture. TransZorb is Vishay's original trademark for the avalanche-type TVS construction, as opposed to a crowbar-style SCR clamp. For the buyer specifying this part, the key practical difference is that it clamps at the Zener voltage rather than latching at a hard threshold, so it resets automatically after the surge clears."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC82A-M3-9AT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC82A-M3-9AT 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}}