{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC43AT3G","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5SMC43AT3G","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5SMC43AT3G","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC43AT3G","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. 1.5SMC series Zener TVS diode, 1.5SMC43AT3G, 1500W peak pulse power, 36.8V reverse standoff, 59.3V clamping, DO-214AB (SMC) package, Tape & Reel.","salesMarkdown":"The 1.5SMC43AT3G is listed as Obsolete by Littelfuse, meaning the manufacturer has discontinued production and there is no official last-time-buy window remaining. Availability is lot-specific and confirmed at RFQ — no stock-holding claim is made here. ## 1500W surge rating — what it means for the protection window Breakdown is specified at a minimum of 40.9V, giving a guard band between the standoff and the clamping point. This is a unidirectional Zener TVS — one channel, cathode band oriented, suitable for DC rail protection where the transient polarity is known. ## DO-214AB (SMC) — board-fit and thermal notes The SMC body is larger than the SMA/SMB siblings — it dissipates the 1500W pulse without exceeding the thermal limit, but the board copper area under the terminals still sets the effective RthJA for repetitive events.","metaTitle":"1.5SMC43AT3G Littelfuse TVS, 1500W, 36.8V Standoff","metaDescription":"Littelfuse 1.5SMC43AT3G Zener TVS, 1500W peak pulse, 36.8V standoff, DO-214AB. Obsolete — sourced to order. RFQ for availability.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Littelfuse Inc.","Type":"Zener","Series":"1.5SMC","Package":"Tape & Reel (TR); Cut Tape (CT)","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"DO-214AB, SMC","Product Status":"Obsolete","lifecycle_stage":"unknown","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":"$0.6200","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/ea97bb520e37528ab309c554c0bb147d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMC43AT3G/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5SMC43AT3G","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5SMC43AT3G when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T09:08:42.131Z","lastPublished":"2026-07-21T09:08:42.131Z","indexable":true}}