{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC91AHM3/I","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5SMC91AHM3-I","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC91AHM3-I","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC91AHM3%2FI","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor 1.5SMC91AHM3/I, Automotive Zener TVS, AEC-Q101, 1500W peak pulse, 125V clamping @ 12A, 77.8V standoff, DO-214AB SMC, Tape & Reel.","salesMarkdown":"## 1500W peak pulse — what that means in the circuit The 1.5SMC91AHM3/I: That rating determines how large a transient it can absorb before the clamping voltage climbs past the protected load's abs-max. For a telecom line card or an automotive ECU input that must survive ISO 7637-2 pulses, the 10/1000 µs character is the relevant test wave — it sits between the fast capacitive-discharge events and the slow load-dump events found in vehicle electrical systems. ## The three-voltage operating envelope Reverse standoff is 77.8 V typ — the diode sits in high impedance below this and the protected rail runs clean. Those three numbers — 77.8 V standoff, 86.5 V breakdown, 125 V clamping — define the protection window and must bracket the protected device's abs-max rating with margin. ## AEC-Q101 qualification and the automotive temperature envelope Junction temperature limit is 150 °C; the -65 °C cold start capability covers cold-crank and arctic-environment operation. The listed operating temperature is referenced to the junction, not the ambient, so the board-level thermal design must keep the case temperature below whatever derating the application demands. ## DO-214AB SMC package and SMT assembly Surface-mount DO-214AB (SMC) package ships on Tape & Reel. The footprint is the industry-standard SMC pad set — the cathodic tab on the top side is the polarity marker. For wave-solder assembly the thermal profile must respect the package's reflow limits; the DO-214AB is not a hermetic ceramic, so prolonged high-temperature exposure affects the die attach rather than the leadframe, but the datasheet profile covers standard SnPb and Pb-free assemblies.","metaTitle":"Vishay 1.5SMC91AHM3/I Zener TVS 1500W 125V Clamping","metaDescription":"Vishay 1.5SMC91AHM3/I AEC-Q101 Zener TVS, 1500W peak pulse, 125V clamping, 77.8V standoff, DO-214AB SMC. Active production. Sourced to order.","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®","Package":"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":"1.5SMC91","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)":"86.5V","Voltage - Clamping (Max) @ Ipp":"125V","Voltage - Reverse Standoff (Typ)":"77.8V","Current - Peak Pulse (10/1000µs)":"12A"}},"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/1.5SMC91AHM3%2FI/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between this Zener-type TVS and a standard Zener diode?","answer":"A Zener TVS (TransZorb®) is optimised for transient suppression rather than voltage reference. It avalanche-characteristic below the Zener voltage, clamping the peak event within its rated peak pulse power. A standard Zener is characterised for stable reference voltage at a specified test current; a TVS is characterised at a 10/1000 µs surge waveform and its clamping voltage at rated peak pulse current."},{"question":"Where can I buy 1.5SMC91AHM3/I and what is the lead time?","answer":"Pricing and lot traceability confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC91AHM3-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/1.5SMC91AHM3-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}}