{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC39AHM3/I","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5SMC39AHM3-I","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC39AHM3-I","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC39AHM3%2FI","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division, 1.5SMC TransZorb® series, Zener TVS diode, Automotive grade, 1500W peak pulse power, 33.3V reverse standoff, 53.9V clamping, DO-214AB (SMC) surface mount, AEC-Q101 qualified.","salesMarkdown":"## What the 1.5 kW rating means in a 33 V rail The 1.5SMC39AHM3/I is a 1500 W peak-pulse Zener TVS diode from Vishay's TransZorb series, built for clamping transients on a 33.3 V nominal rail. AEC-Q101 qualification means this part passed the automotive stress suite: high-temperature reverse bias, temperature cycling, and humidity. ## Clamping, standoff, and the real protection window The reverse standoff voltage is 33.3 V — this is the rail voltage the diode leaves alone. Below that, leakage is negligible. Breakdown starts at 37.1 V minimum, and the clamping voltage peaks at 53.9 V when the full 27.8 A pulse hits. Single unidirectional channel, so it protects one polarity. No power-line protection — it is a signal or low-power rail part, not a mains-side suppressor. ## Active production — sourcing without the guesswork Vishay lists the 1.5SMC39AHM3/I as Active. No NRND flag, no last-time-buy clock. It is a current catalog part, so authorized distribution carries it. Sourced to order against an RFQ through independent and authorized channels.","metaTitle":"1.5SMC39AHM3/I Vishay TVS, 1.5kW, 33.3V Standoff, DO-214AB","metaDescription":"Vishay 1.5SMC39AHM3/I automotive TVS diode, 1500W peak pulse, 33.3V standoff, AEC-Q101 qualified. Active production, sourced to order. Request a quote.","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","Grade":"Automotive","Series":"1.5SMC, TransZorb®","Packaging":"Tape & Reel (TR)","Applications":"Telecom","Mounting Type":"Surface Mount","Qualification":"AEC-Q101","Package / Case":"DO-214AB, SMC","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5SMC39","Operating Temperature":"-65°C ~ 150°C (TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"DO-214AB (SMC)","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"37.1V","Voltage - Clamping (Max) @ Ipp":"53.9V","Voltage - Reverse Standoff (Typ)":"33.3V","Current - Peak Pulse (10/1000µs)":"27.8A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.2906","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/de7dd597f6fdc3f56660f78f3e5a960d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMC39AHM3%2FI/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC39AHM3-I","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/1.5SMC39AHM3-I 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}}