{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC75AHM3/I","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5SMC75AHM3-I","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC75AHM3-I","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC75AHM3%2FI","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor 1.5SMC75AHM3/I, unidirectional Zener TVS, 1500W peak pulse, 64.1V standoff, 104V clamping @ 14.6A, AEC-Q101, DO-214AB SMC, surface mount, -65°C to 150°C junction.","salesMarkdown":"## What the clamping specs mean for your rail The 1.5SMC75AHM3/I: The reverse standoff of 64.1 V nominal means the line sits comfortably below the clamping threshold during normal operation, so the TVS only fires on transients. For a 48 V automotive rail (a common telecom and vehicle bus), the 64.1 V standoff gives roughly 16% headroom above the 54 V peak of a fully-charged battery — enough margin before the Zener avalanche kicks in at the 71.3 V minimum breakdown point. This is a clamp-and-dump device: it avalanche-brefs at the Zener voltage and then returns to standby once the event clears. The 1.5 kW rating is the 10/1000 µs surge window, and the part is rated for that event multiple times in its working life without degradation — the exact number of repeatable strikes is in the Vishay datasheet derating curves. This part carries the AEC-Q101 qualification — the automotive discrete semiconductor stress screen covering temperature cycling, humidity, and surge exposure. For automotive ECUs under the hood, the 150 °C maximum junction temperature matters: you can run the part near thermal limits in engine-bay enclosures without immediately derating below the clamping threshold, as long as the board-level thermal path keeps the SMC tab below its rated limit. ## Where the 1.5SMC series sits The 1.5SMC series covers standoff voltages from roughly 6.8 V up to 200 V in the same SMC package — this specific variant at 64.1 V standoff sits in the mid-range, common on 24 V and 48 V industrial and automotive power rails. The unidirectional channel count of one means it protects a single polarity rail — if you need bidirectional protection across a floating AC-coupled node, look at the bidirectional variant in the same series, which carries the same clamping and peak pulse ratings.","metaTitle":"Vishay 1.5SMC75AHM3/I TVS Zener, 1500W peak, 64.1V standoff","metaDescription":"Active AEC-Q101 unidirectional TVS Zener, 1500W peak pulse, 64.1V standoff / 104V clamping. Sourced to order against an RFQ.","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":"Automotive, AEC-Q101, 1.5SMC, TransZorb®","Package":"Tape & Reel (TR)","Applications":"Automotive, Telecom","Mounting Type":"Surface Mount","Package / Case":"DO-214AB, SMC","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5SMC75","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)":"71.3V","Voltage - Clamping (Max) @ Ipp":"104V","Voltage - Reverse Standoff (Typ)":"64.1V","Current - Peak Pulse (10/1000µs)":"14.6A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/de7dd597f6fdc3f56660f78f3e5a960d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMC75AHM3%2FI/alternatives.json"},"ai":{"faq":[{"question":"What does the 71.3 V minimum breakdown voltage mean for my 48 V rail?","answer":"The 71.3 V breakdown floor sits above the 54 V peak of a fully-charged 48 V battery system — the TVS does not fire during normal operation, only during a transient that drives the rail above 71.3 V. The 104 V clamping ceiling is what your protected IC sees during the fault event before the TVS clamps."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC75AHM3-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/1.5SMC75AHM3-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}}