{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC91CA-M3/57T","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5SMC91CA-M3-57T","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC91CA-M3-57T","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC91CA-M3%2F57T","rawCanonicalId":null},"summary":{"shortDescription":"Vishay 1.5SMC91CA-M3/57T, bidirectional Zener TVS (TransZorb®), 1500 W peak pulse, 77.8 V standoff / 125 V clamping, 12 A peak pulse, DO-214AB SMC, surface mount, Tape & Reel.","salesMarkdown":"The 1.5SMC91CA-M3/57T: The reverse standoff of 77.8 V defines the continuous working voltage the diode holds off without conducting — the protection window sits above that line and fires before the load reaches 125 V. Junction temperature runs to 150 °C — the SMC body thermal resistance and the duty cycle of repeated transients set the margin against that ceiling. For a board-level designer, the -65 °C cold start means the part is qualified for outdoor enclosure or equipment that sees deep-freeze storage before power-up. ## TransZorb® in the 1.5SMC family The CA suffix marks the bidirectional polarity variant in this series — the diode clamps on both polarities without a separate reverse-connected part. Surface-mount termination in the DO-214AB (SMCJ) package matches the standard footprint for this power class, so the existing land pattern on a board already built for a sibling 1.5SMC part accepts this part directly. Tape-and-reel packaging is the standard reel format for high-volume SMT assembly — confirm the pick-and-place nozzle diameter suits the SMC body profile before committing to the line.","metaTitle":"1.5SMC91CA-M3/57T TVS Diode, 125V Clamping, SMC","metaDescription":"Bidirectional 1.5 kW peak-pulse TVS (TransZorb®), 77.8 V standoff / 125 V clamping, DO-214AB SMC, -65°C to 150°C junction. Active — quoted to order on 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":"1.5SMC, TransZorb®","Package":"Tape & Reel (TR)","Applications":"General Purpose","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 (SMCJ)","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":"$0.3715","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/de7dd597f6fdc3f56660f78f3e5a960d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMC91CA-M3%2F57T/alternatives.json"},"ai":{"faq":[{"question":"What is the TransZorb® series used for?","answer":"The 1.5SMC series is Vishay's general-purpose unidirectional and bidirectional TVS diode family intended for transient protection on DC power rails and signal lines. The 77.8 V standoff rating puts this part in the telecom, industrial control, and automotive 48 V rail protection band."},{"question":"Where does the 1.5SMC91CA-M3/57T sit in the protection circuit?","answer":"The 12 A peak pulse rating tells you the maximum transient current the part survives without degradation at the rated waveform."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC91CA-M3-57T","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/1.5SMC91CA-M3-57T 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}}