{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC62CA","brand":"Littelfuse Inc.","brandSlug":"littelfuse-inc","productSlug":"1.5SMC62CA","canonicalUrl":"https://icboms.com/littelfuse-inc/1.5SMC62CA","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC62CA","rawCanonicalId":null},"summary":{"shortDescription":"Littelfuse 1.5SMC62CA unidirectional Zener TVS diode, 53V reverse standoff, 58.9V min breakdown, 85V clamping @ 17.9A peak pulse, 1500W peak pulse power, DO-214AB SMC surface-mount package, -55°C to 150°C junction.","salesMarkdown":"## Clamping parameters and 48 V rail fit The 1.5SMC62CA: At 58.9 V minimum breakdown, the device enters conduction and begins clamping. Peak pulse power is 1500 W at the 10/1000 µs surge shape — the industry-standard TVS test waveform representing an inductive kick or mains transient. The 17.9 A peak pulse rating at that waveform confirms the device survives a single-event surge of that magnitude without going into thermal runaway. ## Junction temperature and thermal margin Rated junction temperature runs to 150 °C — the upper bound is set by the die attach and mold compound, not the Zener junction itself. In a still-air enclosed panel, the SMC package thermal resistance to ambient typically runs 60–80 °C/W, so at the 1500 W peak pulse the junction delta is substantial but brief. For continuous clamping duty, derate per the datasheet curves; the 150 °C ceiling gives some headroom before the thermal limit drives the design. ## DO-214AB package and board integration Surface-mount DO-214AB (SMCJ supplier package) — the cathode bar straddles a large thermal pad on the PCB. Layout matters: the pad area under the cathode directly sets thermal impedance to the board, and the clamping performance under repeated surge is a function of how effectively that heat spreads. A four-layer board with solid ground plane under the SMC gives significantly better thermal performance than a two-layer design with minimal metal. Listed as Active by Littelfuse — part of the mainstream 1.5SMC series spanning a wide voltage range from 5 V up through 440 V. The series is widely second-sourced across the industry, and the DO-214AB pinout is consistent across manufacturers, so a cross-source alternative is a straightforward check at RFQ if single-source risk on the BOM line is a concern.","metaTitle":"Littelfuse 1.5SMC62CA TVS Diode, 53V Standoff, 85V Clamping","metaDescription":"Littelfuse 1.5SMC62CA unidirectional TVS diode, 53V standoff, 58.9V min breakdown, 85V clamping, 17.9A peak pulse, DO-214AB.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","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":"Active","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5SMC","Operating Temperature":"-55°C~150°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"DO-214AB (SMCJ)","Voltage - Breakdown (Min)":"58.9V","Voltage - Clamping (Max) @ Ipp":"85V","Voltage - Reverse Standoff (Typ)":"53V","Current - Peak Pulse (10/1000µs)":"17.9A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6300","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/118f1b70ec0f0941665a20e5472af60a.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMC62CA/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between the 1.5SMC62CA and a 1.5SMC62C TVS diode?","answer":"The CA suffix denotes the bidirectional (monolithic common-cathode Zener) configuration versus the C suffix which is unidirectional. The 1.5SMC62CA clamps transients in both polarities across the same standoff and breakdown window — it is the common choice when AC rails or bidirectional differential signals need protection without a separate diode in each direction."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/littelfuse-inc/1.5SMC62CA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/littelfuse-inc/1.5SMC62CA when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}