{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC540AHM3_A/H","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5SMC540AHM3_A-H","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC540AHM3_A-H","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC540AHM3_A%2FH","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division, Automotive AEC-Q101 1.5SMC TransZorb® series, Zener TVS diode, 1.5SMC540AHM3_A/H, 1500W peak pulse power, 459V standoff, DO-214AB SMC package.","salesMarkdown":"The 1.5SMC540AHM3_A/H: The 459 V reverse standoff voltage places it on 400 VDC bus rails or telecom ring-voltage lines where the normal operating level sits well below the 513 V minimum breakdown threshold. ## Clamping voltage and pulse current — the so-what When the TVS triggers, the clamping voltage holds at 740 V max at the rated 2.03 A peak pulse current. That clamp ceiling tells the downstream silicon what it must survive — a 600 V MOSFET with 800 V Vdss has 60 V of headroom above the clamp, which is tight but workable if the board layout keeps parasitic inductance low. The single unidirectional channel means this diode conducts in avalanche only during a positive overvoltage transient; a negative spike forward-biases the junction and clamps at roughly 1 V, so the protected rail must tolerate that asymmetry or use a bidirectional part instead.","metaTitle":"Vishay 1.5SMC540AHM3_A/H TVS Diode, 1.5kW, DO-214AB","metaDescription":"Vishay 1.5SMC540AHM3_A/H Zener TVS diode, AEC-Q101 qualified, 1500W peak pulse power, 459V standoff, DO-214AB SMC. Active production, sourced 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","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5SMC540","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)":"513V","Voltage - Clamping (Max) @ Ipp":"740V","Voltage - Reverse Standoff (Typ)":"459V","Current - Peak Pulse (10/1000µs)":"2.03A"}},"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/1.5SMC540AHM3_A%2FH/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to 1.5SMC540AHM3_A/H in this family?","answer":"The non-automotive-grade 1.5SMC540A (without the AEC-Q101 suffix) shares the same DO-214AB footprint, same 459 V standoff, and same 1500 W rating. The difference is the qualification level — the AHM3 variant adds automotive stress screening."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC540AHM3_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/1.5SMC540AHM3_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}}