{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC7.5AT3G","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5SMC7.5AT3G","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5SMC7.5AT3G","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC7.5AT3G","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse Inc. 1.5SMC Zener unidirectional TVS, 1500W peak pulse, 6.4V reverse standoff, 11.3V clamping max, 132A peak pulse, DO-214AB SMC package, surface mount, Tape & Reel.","salesMarkdown":"## What the 1.5SMC7.5AT3G is and what it does The 1.5SMC7.5AT3G is a unidirectional Zener-type TVS (transient voltage suppressor) from Littelfuse's 1.5SMC series — the package is DO-214AB (SMC), rated for surface-mount assembly on a standard reflow profile. It clamps voltage spikes on a single unidirectional signal or power rail, protecting downstream components from EOS (electrical overstress) events. ## Clamping performance and what it means for circuit protection With a typical reverse standoff of 6.4 V, the device sits quiescently below the line it protects. When a transient forces the line above the 7.13 V minimum breakdown threshold, the TVS turns on and clamps the peak to no more than 11.3 V at 132 A peak pulse current — so the downstream IC or fet sees a bounded voltage spike rather than an uncontrolled overstress event. The 132 A peak pulse rating at the clamping voltage is the limiting factor for surge survivability — a larger surge current compresses the clamping voltage further up the IV curve, so system-level testing against the applicable surge standard (IEC 61000-4-5, for example) determines whether this part's 1.5 kW rating is the right fit for the exposure class at the board level. ## Junction temperature and deployment environment The datasheet derating curve must be consulted to confirm the safe operating area under repeated pulses. Marked as general-purpose, the 1.5SMC series is the workhorse line for board-level protection on telecom, instrumentation, and industrial control rails — the unidirectional polarity means it connects with cathode to the protected rail and anode to ground, not reversed. Any engineering team evaluating a substitute must work from the same series footprint (DO-214AB SMC) and voltage window (6.4 V standoff, ~7 V breakdown) to maintain the same clamping performance — but without an official cross-reference the equivalence must be validated against the actual IV curve, peak pulse rating, and clamping voltage at the design's surge current level.","metaTitle":"1.5SMC7.5AT3G Littelfuse TVS Diode, 6.4V Standoff","metaDescription":"Littelfuse 1.5SMC7.5AT3G unidirectional Zener TVS diode, 6.4V reverse standoff, 11.3V clamping, 132A peak pulse, DO-214AB SMC package, surface mount.","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)","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)":"7.13V","Voltage - Clamping (Max) @ Ipp":"11.3V","Voltage - Reverse Standoff (Typ)":"6.4V","Current - Peak Pulse (10/1000µs)":"132A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.1800","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/ea97bb520e37528ab309c554c0bb147d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMC7.5AT3G/alternatives.json"},"ai":{"faq":[{"question":"How do I source the 1.5SMC7.5AT3G?","answer":"Quoted to order through independent and surplus distribution channels. Availability and lot traceability are confirmed at RFQ — incoming inspection should verify the standoff voltage, clamping voltage, and peak pulse rating against the datasheet curve before committing the part to a production build."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5SMC7.5AT3G","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5SMC7.5AT3G when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T12:45:36.413Z","lastPublished":"2026-07-21T12:45:36.413Z","indexable":true}}