{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC9.1AHM3_A/H","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5SMC9.1AHM3_A-H","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC9.1AHM3_A-H","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC9.1AHM3_A%2FH","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division 1.5SMC9.1AHM3_A/H, unidirectional Zener TVS, Automotive AEC-Q101, 1500W peak pulse, 13.4V clamping @ 112A, DO-214AB SMC surface mount.","salesMarkdown":"## What the 1.5SMC9.1 does on the line The 1.5SMC9.1AHM3_A/H is a unidirectional Zener-based Transient Voltage Suppressor — a clamp-style protection diode that steers transient energy to ground before the clamped voltage damages downstream circuitry. Breakdown sits at 8.65 V minimum, the device turns on hard, and the maximum clamping voltage at the 112 A peak-pulse rating is 13.4 V. For a 12 V rail, that 13.4 V ceiling gives about 10% margin — enough to absorb a load-dump or inductive kick without propagating a spike to the IC side. The peak pulse rating of 1500 W (10/1000 µs waveform) is the number that determines whether this part handles the automotive transient severity you are designing to. A 1.5 kW device in DO-214AB is a mid-range clamp in the 1.5SMC series — it sits above the 400 W and 600 W variants and below the 2200 W types, so the board thermal pad and land pattern must be sized accordingly for the 112 A peak current path. ## Temperature grade and automotive qualification Junction temperature rating is -65 °C to 150 °C, which covers the engine-compartment and under-hood ambient bands. The AEC-Q101 qualification adds the temperature cycling, humidity, and mechanical stress screens the automotive tier-one supply chain requires before approving a part into a BOM — this is not just a temperature grade claim, it is a reliability gate. For telecom power rails, the same 1.5 kW clamp rating applies to protection against lightning-induced transients on outdoor equipment. ## Sourcing posture Listed Active. Sourced to order against BOM quantity through independent distribution — pricing and lead time confirmed at RFQ.","metaTitle":"Vishay 1.5SMC9.1AHM3_A/H Zener TVS 1500W","metaDescription":"Vishay 1.5SMC9.1AHM3_A/H — unidirectional Zener TVS, AEC-Q101, 1500W peak pulse, 13.4V clamping. Active production. 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","Product Status":"Active","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5SMC9.1","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)":"8.65V","Voltage - Clamping (Max) @ Ipp":"13.4V","Voltage - Reverse Standoff (Typ)":"7.78V","Current - Peak Pulse (10/1000µs)":"112A"}},"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/1.5SMC9.1AHM3_A%2FH/alternatives.json"},"ai":{"faq":[{"question":"What are the key TVS ratings that decide fit for my circuit?","answer":"The clamped voltage at your actual surge current — not the headline power number — is what determines whether downstream ICs survive the event."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC9.1AHM3_A-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/1.5SMC9.1AHM3_A-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}}