{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC51AT3G","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5SMC51AT3G","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5SMC51AT3G","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC51AT3G","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse 1.5SMC series Zener TVS diode, 1.5SMC51AT3G, 1500W peak pulse power, 43.6V standoff, 48.5V breakdown, 70.1V clamping, DO-214AB SMC package.","salesMarkdown":"## What this TVS diode protects and where it fits The 1.5SMC51AT3G: It clamps a 43.6 V nominal rail — the reverse standoff voltage — and begins conducting at 48.5 V breakdown, limiting the surge to 70.1 V max at 21.4 A peak pulse current. ## Obsolete — sourcing reality for the BOM line For a BOM line that already specifies this part, the supply path runs through independent distribution and surplus channels — quantities are lot-specific and confirmed at RFQ. If the design is still in development, a pin-compatible TVS from the same 1.5SMC family with a similar standoff voltage (e.g., a 43.6 V or adjacent rating) may be a drop-in alternative, but the exact clamping and breakdown window should be verified against the original protection requirement. ## Temperature range and package — board-fit notes No special ESD precautions beyond normal handling for a surface-mount component.","metaTitle":"1.5SMC51AT3G Littelfuse TVS Diode, 1500W, DO-214AB SMC","metaDescription":"Littelfuse 1.5SMC51AT3G Zener TVS diode, 1500W peak pulse power, 43.6V standoff, DO-214AB SMC. Obsolete — sourced to order against RFQ.","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)":"48.5V","Voltage - Clamping (Max) @ Ipp":"70.1V","Voltage - Reverse Standoff (Typ)":"43.6V","Current - Peak Pulse (10/1000µs)":"21.4A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/ea97bb520e37528ab309c554c0bb147d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMC51AT3G/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5SMC51AT3G","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5SMC51AT3G when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T09:18:52.575Z","lastPublished":"2026-07-21T09:18:52.575Z","indexable":true}}