{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC30AT3G","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5SMC30AT3G","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5SMC30AT3G","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC30AT3G","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. 1.5SMC series Zener TVS diode, 1.5SMC30AT3G, 1500W peak pulse power, 25.6V reverse standoff, 41.4V clamp, DO-214AB SMC package, Tape & Reel.","salesMarkdown":"## Obsolete — last-time-buy window closed The 1.5SMC30AT3G: Available through independent surplus and excess inventory channels. Quantities are lot-specific; traceability and date codes confirmed at RFQ. No pin-compatible direct replacement from Littelfuse is documented. ## 1500 W peak pulse — what the rating means for the BOM Rated 1500 W peak pulse power at 10/1000 µs waveform. This is the energy-handling ceiling for a single transient event — a 36 A peak pulse current into the 41.4 V clamp voltage dissipates that 1.5 kW within the waveform duration. Reverse standoff voltage is 25.6 V; the device remains transparent below this DC bias. Breakdown occurs at 28.5 V minimum, clamping at 41.4 V max. For a 24 V nominal rail, this provides a ~1.6 V guard band before the TVS starts conducting leakage. Single unidirectional channel — polarity matters in the layout. The cathode band on the DO-214AB SMC package must face the protected rail; reverse insertion shorts the line. ## Package and temperature range DO-214AB (SMC) surface-mount package. The standard SMC footprint with a 0.050-inch (1.27 mm) pad extension on each side handles the 1500 W thermal pulse. Junction temperature range -65°C to 150°C covers military and industrial extremes.","metaTitle":"1.5SMC30AT3G Littelfuse TVS Diode, 1500W, DO-214AB","metaDescription":"Obsolete Littelfuse 1.5SMC30AT3G Zener TVS diode, 1500W peak pulse, 25.6V standoff, 41.4V clamp, DO-214AB SMC. 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)":"28.5V","Voltage - Clamping (Max) @ Ipp":"41.4V","Voltage - Reverse Standoff (Typ)":"25.6V","Current - Peak Pulse (10/1000µs)":"36A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6500","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/ea97bb520e37528ab309c554c0bb147d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMC30AT3G/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to 1.5SMC30AT3G?","answer":"No official pin-compatible successor from Littelfuse is documented. A parametric search for a 1500 W, 25.6 V standoff, DO-214AB unidirectional TVS from other brands may yield functional equivalents, but pinout and footprint must be verified against the existing PCB layout."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5SMC30AT3G","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5SMC30AT3G when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T08:52:17.413Z","lastPublished":"2026-07-21T08:52:17.413Z","indexable":true}}