{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC480AHM3_B/H","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5SMC480AHM3_B-H","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC480AHM3_B-H","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC480AHM3_B%2FH","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor 1.5SMC, TransZorb® series, TVS Zener diode, Automotive grade, AEC-Q101, 1500W peak pulse, 408V standoff, DO-214AB (SMC), Surface Mount.","salesMarkdown":"## Package and board-fit — DO-214AB (SMC) The 1.5SMC480AHM3_B/H comes in the DO-214AB (SMC) package, surface-mount on a standard SMC footprint. The supplier device package is listed as DO-214AB (SMCJ), which shares the same JEDEC outline — the pad layout is identical between the two designators. A 2 oz copper pour on the top layer, tied through vias to an inner-plane ground, is the typical starting point for this power level. ## Automotive qualification and temperature range This part carries AEC-Q101 qualification, the automotive-grade stress and reliability standard for discrete semiconductors. The Automotive grade designation means the part has passed the full suite of AEC-Q101 tests including HTRB, H3TRB, and temperature cycling — no additional screening is needed for production release in an automotive ECU. ## Clamping voltage and standoff — what the numbers mean The reverse standoff voltage is 408V — this is the maximum DC or peak-AC voltage the TVS can sit across without conducting significant leakage. For a 400V nominal bus, the 408V standoff provides enough margin to ride through normal ripple and transients below the breakdown knee. The 658V clamp means downstream components must survive that peak voltage for the pulse duration — a 600V-rated MOSFET on the same rail would need a secondary clamp or derating.","metaTitle":"1.5SMC480AHM3_B/H Vishay TVS, 1.5kW, 408V, DO-214AB","metaDescription":"Vishay 1.5SMC480AHM3_B/H automotive TVS diode, 1500W peak pulse, 408V standoff, AEC-Q101, DO-214AB. 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","Grade":"Automotive","Series":"1.5SMC, TransZorb®","Package":"Tape & Reel (TR) Cut Tape (CT)","Applications":"-","Mounting Type":"Surface Mount","Qualification":"AEC-Q101","Package / Case":"DO-214AB, SMC","Product Status":"Active","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5SMC480","Operating Temperature":"-65°C ~ 150°C (TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"DO-214AB (SMCJ)","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"456V","Voltage - Clamping (Max) @ Ipp":"658V","Voltage - Reverse Standoff (Typ)":"408V","Current - Peak Pulse (10/1000µs)":"2.28A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.4600","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/de7dd597f6fdc3f56660f78f3e5a960d.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to 1.5SMC480AHM3_B/H in this Circuit Protection family?","answer":"The 1.5SMC series from Vishay includes multiple voltage variants in the same DO-214AB package — for example, the 1.5SMC440AHM3_B/H has a lower standoff voltage (376V). However, no pin-compatible alternative with identical electrical ratings is listed as a direct cross-reference. The base product number 1.5SMC480 covers the 480V family; the suffix determines the qualification and environmental compliance."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC480AHM3_B-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/1.5SMC480AHM3_B-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}}