{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC150AHM3_A/H","brand":"Vishay General Semiconductor - Diodes Division","brandSlug":"vishay-general-semiconductor-diodes-division","productSlug":"1.5SMC150AHM3_A-H","canonicalUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC150AHM3_A-H","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC150AHM3_A%2FH","rawCanonicalId":null},"summary":{"shortDescription":"Vishay General Semiconductor - Diodes Division, Automotive AEC-Q101, 1.5SMC TransZorb® series, Zener TVS diode, 1500W peak pulse power, 128V standoff, DO-214AB SMC package, Tape & Reel.","salesMarkdown":"## 1500 W peak pulse, AEC-Q101 — the TVS for 128 V rails in automotive and telecom The 1.5SMC150AHM3_A/H: It clamps a 128 V reverse standoff rail at 207 V max, passing 7.2 A peak pulse current before the silicon breaks down. AEC-Q101 qualification means it is screened for automotive-grade reliability: the -65°C to 150°C junction temperature range covers under-hood and engine-bay thermal profiles without derating the pulse capability. ## Clamp voltage and standoff — sizing the protection window The 128 V reverse standoff (working voltage) is the DC or peak-AC rail the TVS sits across without conducting. The 143 V minimum breakdown voltage guarantees the diode starts clamping before the rail exceeds the downstream components' absolute maximum — a 150 V-rated MOSFET on a 128 V bus has margin. At 207 V max clamping, the TVS holds the surge voltage below the 250 V typical rating of common DC-link capacitors and downstream semiconductors in automotive 48 V or telecom -48 V systems. The 7.2 A peak pulse current is the current the diode must sink at the clamp voltage — the upstream fuse or PTC must open before the diode's thermal limit. ## Package and board-fit — DO-214AB (SMC) footprint The DO-214AB (SMC) package is a standard surface-mount footprint for 1500 W TVS diodes. The large copper tab on the cathode side carries the heat into the PCB copper pour — a 1 oz copper pad of at least 300 mm² keeps the junction temperature rise under 25°C during a single 10/1000 µs pulse. Supplied on Tape & Reel, the part is compatible with standard pick-and-place and reflow profiles (260°C peak, J-STD-020). No special moisture sensitivity level is stated, but a 24-hour bake at 125°C before reflow is prudent if the reel has been open longer than the floor life.","metaTitle":"1.5SMC150AHM3_A/H Vishay TVS Diode, 1500W, DO-214AB","metaDescription":"Vishay 1.5SMC150AHM3_A/H Zener TVS diode, 1500W peak pulse, 128V standoff, 207V clamp. AEC-Q101 qualified. Active, available 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","Product Status":"Active","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5SMC150","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)":"143V","Voltage - Clamping (Max) @ Ipp":"207V","Voltage - Reverse Standoff (Typ)":"128V","Current - Peak Pulse (10/1000µs)":"7.2A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/de7dd597f6fdc3f56660f78f3e5a960d.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay-general-semiconductor-diodes-division/1.5SMC150AHM3_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/1.5SMC150AHM3_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}}