{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC91CAHM3/I","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5SMC91CAHM3-I","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC91CAHM3-I","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC91CAHM3%2FI","rawCanonicalId":null},"summary":{"shortDescription":"Vishay 1.5SMC91CAHM3/I, Automotive AEC-Q101 TransZorb® TVS Zener, 77.8V standoff, 125V clamping, 1.5kW peak pulse (10/1000µs), 12A peak pulse, bidirectional, DO-214AB SMC, -65°C to 150°C junction, surface mount, tape & reel.","salesMarkdown":"## Standoff vs clamping — the TVS selection axis The 1.5SMC91CAHM3/I: 77.8 V reverse standoff is the voltage the line sits below in normal operation without conduction; 125 V clamping is the maximum the protected load sees when the 12 A peak pulse fires — together these two figures define the protection window the designer sizes the TVS into. Breakdown minimum of 86.5 V sits inside the standoff, confirming the device does not begin conduction until the transient exceeds the nominal clamp threshold. The bidirectional configuration means it handles AC rails or dual-polarity transients without orientation — for a single-polarity DC rail the unidirectional variant in the same SMC package is the common alternative, but the bidirectional is the correct choice when the protected node swings both above and below ground. ## Automotive qualification and deployment envelope Primary deployment targets are automotive ECU input protection and telecom line-card transient suppression, per the listed applications. The DO-214AB (SMC) package is the standard surface-mount footprint for this power class; the tape-and-reel packaging supports high-volume pick-and-place assembly lines without reel-conversion steps.","metaTitle":"Vishay 1.5SMC91CAHM3/I TVS Diode, 77.8V Standoff","metaDescription":"Vishay 1.5SMC91CAHM3/I, AEC-Q101 qualified bidirectional TVS Zener in DO-214AB. 77.8V standoff, 125V clamping, 1.5kW peak pulse.","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","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":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/de7dd597f6fdc3f56660f78f3e5a960d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMC91CAHM3%2FI/alternatives.json"},"ai":{"faq":[{"question":"What is the lead time for 1.5SMC91CAHM3/I?","answer":"Lead time and confirmed pricing are established at RFQ — availability and current lead times vary by order quantity and stocking position across distribution sources, and are confirmed when the quote is issued."},{"question":"What series and qualifications does the 1.5SMC91CAHM3/I carry?","answer":"It belongs to the 1.5SMC series and is AEC-Q101 qualified under Vishay's Automotive grade, carrying the TransZorb® designation — Vishay's Zener-type TVS construction. The Automotive qualifier and AEC-Q101 are the key compliance signals for ECU and chassis-domain designs requiring supplier-level automotive qualification."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC91CAHM3-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-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}}