{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC68AT3G","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5SMC68AT3G","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5SMC68AT3G","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC68AT3G","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse 1.5SMC68AT3G Zener TVS, 58.1V standoff, 64.6V breakdown, 92V clamping, 1500W peak pulse, 16.3A peak pulse current, DO-214AB SMC, -65°C to 150°C.","salesMarkdown":"## Clamping performance — what 92V means downstream The reverse standoff of 58.1V sets the normal operating window; once a transient exceeds the 64.6V minimum breakdown, the clamp fires and the TVS limits the peak at 92V with a 16.3A (10/1000 µs) surge current flowing through it. That 92V ceiling is what the protected load sees — the downstream circuit must survive that clamping level, not the raw transient. At 1500W peak pulse rating, the 1.5SMC68AT3G absorbs the surge energy without degradation into the junction-temperature ceiling of 150°C. ## Lifecycle — what obsolete means for procurement Littelfuse has marked the 1.5SMC68AT3G obsolete — no authorized-channel restocking and no stated replacement in the available record. The sourcing path is independent distribution and surplus brokers, where lot traceability and date-code chain of custody become the authentication problem, not just the electrical fit. For a TVS protecting a safety-critical rail, the provenance question is not secondary: a relabeled part with the wrong Vbr punches through at a different voltage and leaves the load exposed. ## Package and thermal envelope The DO-214AB (SMC) package is the standard pick for 1500W TVS in this form factor — the clip-heat-spreader construction handles the thermal transient of a surge event before the junction heats to the 150°C limit. Tape-and-reel and cut-tape packaging support high-volume SMT assembly without a separate tray cost.","metaTitle":"Littelfuse 1.5SMC68AT3G Zener TVS, 58.1V, 1500W","metaDescription":"Littelfuse 1.5SMC68AT3G Zener TVS diode, DO-214AB SMC, 58.1V standoff, 64.6V breakdown, 92V clamp, 1500W peak pulse, -65°C to 150°C. Obsolete — quoted to order.","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)":"64.6V","Voltage - Clamping (Max) @ Ipp":"92V","Voltage - Reverse Standoff (Typ)":"58.1V","Current - Peak Pulse (10/1000µs)":"16.3A"}},"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/1.5SMC68AT3G/alternatives.json"},"ai":{"faq":[{"question":"What voltage does this TVS actually clamp at?","answer":"The clamping voltage of 92V at 16.3A peak pulse (10/1000 µs) is the voltage appearing across the TVS terminals while it is actively conducting surge current. The protected circuit must be rated to survive 92V on the line — the standoff voltage of 58.1V is the normal operating level before the transient fires, not the clamp ceiling."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5SMC68AT3G","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5SMC68AT3G when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T12:03:18.741Z","lastPublished":"2026-07-21T12:03:18.741Z","indexable":true}}