{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC91AH","brand":"Taiwan Semiconductor Corporation","brandSlug":"taiwan-semiconductor-corporation","productSlug":"1.5SMC91AH","canonicalUrl":"https://icboms.com/taiwan-semiconductor-corporation/1.5SMC91AH","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC91AH","rawCanonicalId":null},"summary":{"shortDescription":"Taiwan Semiconductor Corporation, 1.5SMC series, Automotive Zener, 1.5SMC91AH, 1500W peak pulse, 77.8V reverse standoff, DO-214AB SMC package, Tape & Reel.","salesMarkdown":"The 1.5SMC91AH is an automotive-qualified unidirectional Zener in the DO-214AB (SMC) package — it sits on the line to clamp transients, not to conduct continuously. The 1500 W peak pulse rating defines the energy it can absorb during a 10/1000 µs surge event without degradation, which is the governing stress for telecom power entry and board-level protection near the dc rail. ## The voltage chain that sets the clamping window The reverse standoff sits at a typical 77.8 V — the part stays off during normal operation up to that rail. For a 48 V telecom bus that sees lightning or switching transients, the 86.5–125 V window gives enough headroom above nominal while keeping the downstream circuitry below its withstand rating. ## AEC-Q101 qualification and what it covers The Tape & Reel packaging and surface-mount form factor suit high-volume pick-and-place — the DO-214AB footprint is industry-standard and compatible with most SMC landing patterns, but confirm the anode/cathode marking orientation against your layout since the part is unidirectional only.","metaTitle":"1.5SMC91AH Zener Diode, 1500W, 77.8V","metaDescription":"Automotive Zener, AEC-Q101, 1500W peak pulse, 77.8V standoff, 125V clamping, DO-214AB SMC. Sourced to order via RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Taiwan Semiconductor Corporation","Type":"Zener","Grade":"Automotive","Series":"1.5SMC","Package":"Tape & Reel (TR)","Applications":"Telecom","Mounting Type":"Surface Mount","Qualification":"AEC-Q101","Package / Case":"DO-214AB, SMC","Product Status":"Active","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5SMC91","Operating Temperature":"-55°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)":"12.6A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.2104","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/c99a29a269fa26a4f496d5fb792b5296.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMC91AH/alternatives.json"},"ai":{"faq":[{"question":"Who supplies 1.5SMC91AH and how is it quoted for volume purchases?","answer":"The manufacturer is Taiwan Semiconductor Corporation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/taiwan-semiconductor-corporation/1.5SMC91AH","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/taiwan-semiconductor-corporation/1.5SMC91AH 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}}