{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC43AT3","brand":"onsemi","brandSlug":"onsemi","productSlug":"1.5SMC43AT3","canonicalUrl":"https://icboms.com/onsemi/1.5SMC43AT3","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC43AT3","rawCanonicalId":null},"summary":{"shortDescription":"onsemi 1.5SMC43AT3, Zener TVS diode, 1500W peak pulse power, 36.8V reverse standoff, 59.3V clamping, DO-214AB SMC, single unidirectional channel.","salesMarkdown":"## Zener TVS for 36.8 V rail protection The 1.5SMC43AT3 is a single-channel unidirectional Zener TVS diode from onsemi, designed to clamp transients on a 36.8 V nominal rail (reverse standoff voltage) to a maximum of 59.3 V at the peak pulse current of 25.3 A (10/1000 µs waveform). Rated for 1500 W peak pulse power, it absorbs surge energy in a surface-mount package, suitable for general-purpose overvoltage protection on DC power buses, signal lines, and I/O ports. ## Clamping voltage and breakdown margin The minimum breakdown voltage is 40.9 V. The clamping voltage at 25.3 A is 59.3 V. Operating temperature range spans -65°C to 150°C junction, covering automotive under-hood and industrial outdoor enclosures without derating concerns at the cold end. ## Obsolete — sourcing and replacement planning onsemi has marked the 1.5SMC43AT3 as Obsolete. No official successor is listed in the available records. For a BOM line that must stay active, a parametric cross-search within the 1.5SMC series for a 36.8 V standoff Zener TVS is the first step. Sourced and quoted per RFQ against the BOM quantity.","metaTitle":"1.5SMC43AT3 onsemi Zener TVS – 1500W, 36.8V Standoff","metaDescription":"onsemi 1.5SMC43AT3 Zener TVS diode, 1500W peak pulse, 36.8V reverse standoff, DO-214AB SMC. Obsolete – confirm BOM fit and sourcing per RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"onsemi","Type":"Zener","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"DO-214AB, SMC","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5SMC","Operating Temperature":"-65°C~150°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"SMC","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"40.9V","Voltage - Clamping (Max) @ Ipp":"59.3V","Voltage - Reverse Standoff (Typ)":"36.8V","Current - Peak Pulse (10/1000µs)":"25.3A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5800","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/67cccc4ec8e3058e4b6b6ee8407ab63e.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How can I order 1.5SMC43AT3 or check stock?","answer":"The 1.5SMC43AT3 is obsolete per onsemi. Submit an RFQ with your target quantity; we source and quote to order. Availability and pricing are confirmed at quote time — no stock-holding claim."},{"question":"Is 1.5SMC43AT3 obsolete?","answer":"Yes, onsemi lists the 1.5SMC43AT3 as Obsolete. No official replacement part number is published. For a drop-in alternative, search the 1.5SMC series for a 36.8 V standoff, 1500 W Zener TVS in DO-214AB."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/1.5SMC43AT3","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/1.5SMC43AT3 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T20:13:35.419Z","lastPublished":"2026-07-17T20:13:35.419Z","indexable":true}}