{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC91CAHM3_A/I","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5SMC91CAHM3_A-I","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC91CAHM3_A-I","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC91CAHM3_A%2FI","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor, Automotive AEC-Q101 1.5SMC TransZorb® series, bidirectional TVS Zener diode, 1.5SMC91CAHM3_A/I, 77.8V standoff, 125V clamping max, 1500W peak pulse, DO-214AB SMC surface mount, Tape & Reel.","salesMarkdown":"## Clamping performance — what 125V means for the protection circuit The 1.5SMC91CAHM3_A/I: The 77.8V reverse standoff is the working rail — the TVS stays inert below it and presents only a few picofarads of capacitance to the line. When a transient exceeds 86.5V breakdown, the device clamps hard to 125V maximum at the 12A peak pulse rating (10/1000µs waveform). That 125V ceiling is the number that protects downstream silicon — a 1500W peak pulse rating means it absorbs the energy of a short, fast surge and returns to high-impedance state once the event clears. For automotive 12V rails the margin is comfortable; for telecom 48V bus the 77.8V standoff sits squarely in the common-mode working range. ## AEC-Q101 qualification — built for under-hood and base-station environments The series carries AEC-Q101 automotive grade, which means it passed temperature cycling, humidity bias, and surge-life testing at levels well above commercial stress grades. The telecom listing in the applications field reflects the same surge-withstand and repeatability performance needed in base-station power-entry modules. ## DO-214AB SMC package — reel storage and board assembly Supplied in Tape & Reel on the standard DO-214AB (SMC) footprint — the foot pattern matches the industry-standard 2-lead SMA variant, so it drops onto the same pad layout without a board spin. Surface-mount reflow profile follows standard lead-free solder process; the plastic body is moisture-rated but the part is not a moisture-sensitive device in the same class as a BGA or QFP — no dry-bake step is required before assembly, unlike a bare-die or molded-array package. Store reels in the sealed bag until just before use; the leads are tin-plated and not prone to oxidation in normal warehouse conditions. The 1.5SMC91CAHM3_A/I carries Active lifecycle status per the manufacturer record.","metaTitle":"1.5SMC91CAHM3_A/I TVS Diode, 1500W Peak Pulse","metaDescription":"Vishay 1.5SMC91CAHM3_A/I, bidirectional 1500W TVS Zener in DO-214AB SMC. 77.8V standoff, 125V clamping, AEC-Q101. Active — quoted 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","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":"1.5SMC91","Operating Temperature":"-65°C~150°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"DO-214AB (SMC)","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":"$0.4447","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/de7dd597f6fdc3f56660f78f3e5a960d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMC91CAHM3_A%2FI/alternatives.json"},"ai":{"faq":[{"question":"What type is the 1.5SMC91CAHM3_A/I — is it a Zener or a TVS?","answer":"The device is classified as a Zener type in this listing, specifically a bidirectional TVS Zener — commonly called a TransZorb® — which functions as a voltage-clamping transient suppressor rather than a standard regulation Zener. The 77.8V standoff and 125V clamping ceiling confirm it is a protection device, not a reference."},{"question":"What series does the 1.5SMC91CAHM3_A/I belong to?","answer":"It is part of the Vishay 1.5SMC series, qualified to AEC-Q101 automotive standards and designated as a TransZorb® — Vishay's trademark for the glass-passivated junction TVS construction. The series covers a range of standoff voltages; this variant is the 91V class (91 refers to the nominal breakdown region in the series naming convention)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC91CAHM3_A-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/1.5SMC91CAHM3_A-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}}