{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC91AHM3/H","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5SMC91AHM3-H","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC91AHM3-H","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC91AHM3%2FH","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor, Automotive Zener TVS, 1.5SMC91AHM3/H, 1500W peak pulse, 125V clamping @ 12A, 77.8V standoff, AEC-Q101, DO-214AB SMC, surface mount.","salesMarkdown":"## 125V clamping — the load's surge ceiling The 1.5SMC91AHM3/H is a unidirectional Zener-type TVS diode in the DO-214AB (SMC) package, qualified AEC-Q101 for automotive and listed for telecom applications. ## Peak-pulse and temperature envelope The 1500 W peak pulse rating defines the energy the device can absorb during a single 10/1000 µs surge without degradation. The 12 A peak pulse current corresponds to that same waveform — above this current the clamp rises toward 125 V, so the downstream protection bandwidth and holding current budget are set together. Junction temperature range is -65 to 150 °C: the high end maps to full under-hood operating ambient after derating, and the low end covers cold-soak and cold-crank conditions in automotive deployments. ## Automotive qualification and deployment AEC-Q101 is not a marketing claim — it is a defined stress-test sequence (ESD, humidity, temperature cycling, terminal strength) run at the component level before the part enters automotive assembly flows. The 77.8 V reverse standoff is the working voltage in normal operation; transients above that level trigger the clamp. The single unidirectional channel means it protects one polarity — for AC lines or bidirectional clamping a dual-polarity part is required. ## Sourcing the 1.5SMC91AHM3/H Listed Active by Vishay General Semiconductor. The base product number 1.5SMC91 identifies the series family — any pin-compatible alternative within that series shares the same SMC footprint and standoff/clamp ratings at the same voltage grade.","metaTitle":"Vishay 1.5SMC91AHM3/H TVS Diode, 125V Clamping, AEC-Q101","metaDescription":"Vishay 1.5SMC91AHM3/H, automotive Zener TVS, 125V clamping, 1500W peak pulse, AEC-Q101, DO-214AB SMC. Sourced to order against 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":"1.5SMC91","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":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/de7dd597f6fdc3f56660f78f3e5a960d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMC91AHM3%2FH/alternatives.json"},"ai":{"faq":[{"question":"Where can I source the 1.5SMC91AHM3/H?","answer":"The part is listed Active and is sourced to order through independent distribution channels. Availability and current lead time are confirmed against your BOM quantity at RFQ — quoted to order, not from stock-holding inventory."},{"question":"What does AEC-Q101 mean for my automotive design?","answer":"AEC-Q101 is the automotive discrete semiconductor qualification standard — it adds temperature cycling, humidity, and terminal-strength stress tests to the base JESD22 screening. A part with this rating is cleared for use in automotive ECU environments without additional component-level qualification."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC91AHM3-H","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-H 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}}