{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC18AT3G","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5SMC18AT3G","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5SMC18AT3G","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC18AT3G","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse 1.5SMC series TVS diode, Zener type, 1500W peak pulse power, 15.3V reverse standoff, 25.2V clamping, 59.5A peak pulse current, DO-214AB SMC package, Tape & Reel.","salesMarkdown":"## Transient protection for a 15.3 V rail — obsolete last-time-buy reality The 1.5SMC18AT3G: The 15.3 V reverse standoff voltage means it sits across a 15 V or 12 V rail without conducting, then breaks down at 17.1 V min and clamps at 25.2 V max to shunt the transient to ground. The DO-214AB SMC package is the standard surface-mount footprint for high-power TVS diodes — the same footprint used across the 1.5SMC family. ## Obsolete — sourcing through independent channels Littelfuse has marked the 1.5SMC18AT3G as obsolete. This part is no longer supported for new designs and is not available through standard authorized distribution channels. Procurement for BOM positions using this order code must go through independent surplus and broker channels. No production-status claim is made beyond the manufacturer's own obsolete designation. ## Clamping voltage window and rail protection For a 15 V rail, the 25.2 V clamp provides a 10 V margin above nominal, which is adequate for most 30 V-rated downstream silicon. The single unidirectional channel means this device protects one polarity — it conducts in reverse breakdown only. For AC lines or bidirectional protection, two devices or a bidirectional TVS would be needed.","metaTitle":"1.5SMC18AT3G Littelfuse TVS Diode, 1500W, 15.3V Standoff","metaDescription":"Littelfuse 1.5SMC18AT3G TVS diode, 1500W peak pulse, 15.3V standoff, DO-214AB SMC. Obsolete — sourced to order against RFQ through independent distribution.","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)":"17.1V","Voltage - Clamping (Max) @ Ipp":"25.2V","Voltage - Reverse Standoff (Typ)":"15.3V","Current - Peak Pulse (10/1000µs)":"59.5A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6500","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/ea97bb520e37528ab309c554c0bb147d.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy the 1.5SMC18AT3G and check availability?","answer":"The 1.5SMC18AT3G is sourced to order against RFQ through independent distribution. Submit an RFQ for your BOM quantity to check lot availability and delivery terms."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5SMC18AT3G","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5SMC18AT3G when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:34:45.345Z","lastPublished":"2026-07-20T14:34:45.345Z","indexable":true}}