{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC47CAHM3/H","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5SMC47CAHM3-H","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC47CAHM3-H","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC47CAHM3%2FH","rawCanonicalId":null},"summary":{"shortDescription":"Vishay 1.5SMC, TransZorb® series, Automotive AEC-Q101 Zener TVS, 1.5SMC47CAHM3/H, 1500W peak pulse, 40.2V reverse standoff, bidirectional, DO-214AB SMC package, Tape & Reel.","salesMarkdown":"## 1500W bidirectional clamp for a 40.2V automotive rail The 1.5SMC47CAHM3/H: It clamps a 40.2V reverse standoff rail to 64.8V maximum at 23.1A peak pulse current. Bidirectional single-channel construction — one device protects both polarities on a signal or power line, common in automotive and telecom applications where the line sees positive and negative transients. Qualified to AEC-Q101, the automotive discrete semiconductor reliability standard. ## Clamping voltage and peak pulse current — what they mean for a 40.2V rail The 40.2V reverse standoff is the maximum DC or peak-AC voltage the TVS leaves untouched. Breakdown triggers at 44.7V minimum, clamping the transient at 64.8V maximum — that 24.6V clamp headroom ensures the downstream IC's abs-max rating (typically 1.3x the rail) is not exceeded on a 40.2V bus. For automotive load-dump pulses (ISO 7637-2 pulse 5a/5b), the energy is lower but the peak voltage is higher — the 1500W rating handles a 60V load-dump on a 40.2V rail with margin. ## DO-214AB (SMC) surface-mount — board-fit note The copper pad area under the cathode tab sets the thermal resistance — a 300mm² copper pour on a 2oz board keeps RthJA below 60°C/W for the 1500W pulse. Supplied on Tape & Reel (TR) for automated pick-and-place.","metaTitle":"Vishay 1.5SMC47CAHM3/H TVS Diode, 1500W, 40.2V, DO-214AB","metaDescription":"Active Vishay 1.5SMC47CAHM3/H Zener TVS, 1500W peak pulse, 40.2V reverse standoff, AEC-Q101 automotive. Sourced to order — RFQ for availability.","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":"1.5SMC47","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)":"44.7V","Voltage - Clamping (Max) @ Ipp":"64.8V","Voltage - Reverse Standoff (Typ)":"40.2V","Current - Peak Pulse (10/1000µs)":"23.1A"}},"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/1.5SMC47CAHM3%2FH/alternatives.json"},"ai":{"faq":[{"question":"What is the peak pulse power and clamping voltage of this TVS?","answer":"Rated 1500W (1.5kW) for a 10/1000µs waveform. Reverse standoff is 40.2V, breakdown minimum is 44.7V, and it clamps at 64.8V maximum at 23.1A peak pulse current."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC47CAHM3-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/1.5SMC47CAHM3-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}}