{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMCJ54A","brand":"Diotec Semiconductor","brandSlug":"diotec-semiconductor","productSlug":"1.5SMCJ54A","canonicalUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ54A","factsUrl":"https://icboms.com/api/mcp/products/1.5SMCJ54A","rawCanonicalId":null},"summary":{"shortDescription":"Diotec Semiconductor 1.5SMCJ54A unidirectional TVS diode, 1500W peak pulse, 54V reverse standoff, 87.1V clamping @ 17.2A, DO-214AB SMC surface-mount package, -50°C to 150°C junction temp.","salesMarkdown":"## 1.5 kW unidirectional TVS in DO-214AB The 1.5SMCJ54A: The reverse standoff voltage is 54 V typ — the working voltage the diode blocks in normal operation. Minimum breakdown is 60 V, and the clamping voltage ceiling is 87.1 V at the 17.2 A peak pulse current. That 87.1 V clamping floor is the key spec: when a transient exceeds the standoff, the TVS clamps the line at or below that voltage to protect downstream circuitry. Operating junction temperature runs from -50 °C to 150 °C — the upper bound matters for designs where the TVS sits near a heat source or in an enclosed space without active cooling. The SMC body thermal resistance and the 150 °C TJ limit constrain how long the part can absorb repeated transients above standoff; the 1500 W rating is a 10/1000 µs pulse rating, not a continuous dissipation figure. ## Surface-mount fit for board-level protection The SMC (DO-214AB) package is the standard industry footprint for 1500 W TVS diodes — the cathodes band on the body marks pin 1. For layout, the PCB copper area under the cathode pad sets the thermal path to the board; adequate pad size and thermal vias are required to stay within the TJ rating on repeated surge events. This is surface-mount only — no through-hole variant in this series. ## Active production and sourcing The 1.5SMCJ54A is listed Active by Diotec Semiconductor. This is a widely cloned series across multiple manufacturers — the 1.5SMCJ54A type code is a generic industry pinout, so second-source options exist. Confirm the exact diode variant and datasheet revision against the Diotec source before committing to a BOM position.","metaTitle":"1.5SMCJ54A TVS Diode, 54V Standoff, 1500W","metaDescription":"Diotec 1.5SMCJ54A unidirectional TVS diode, 54V standoff, 87.1V clamping, 17.2A peak pulse, DO-214AB SMC surface mount, active. Sourced to order via RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Diotec Semiconductor","Type":"Zener","Series":"-","Package":"Strip","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"DO-214AB, SMC","Product Status":"Active","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Operating Temperature":"-50°C~150°C(TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"SMC/DO-214AB","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"60V","Voltage - Clamping (Max) @ Ipp":"87.1V","Voltage - Reverse Standoff (Typ)":"54V","Current - Peak Pulse (10/1000µs)":"17.2A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.9158","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/3fb0502b23c3703cafef426b7b2bf7e5.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMCJ54A/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between the standoff voltage and clamping voltage on a TVS like the 1.5SMCJ54A?","answer":"The 54 V reverse standoff is the maximum working voltage the TVS blocks without conducting — the line sits below breakdown in normal operation. The clamping voltage is what the downstream load actually sees during the event."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ54A","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/diotec-semiconductor/1.5SMCJ54A 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}}