{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMCJ51CA","brand":"Diotec Semiconductor","brandSlug":"diotec-semiconductor","productSlug":"1.5SMCJ51CA","canonicalUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ51CA","factsUrl":"https://icboms.com/api/mcp/products/1.5SMCJ51CA","rawCanonicalId":null},"summary":{"shortDescription":"Diotec Semiconductor Zener TVS diode, 1.5SMCJ51CA, 51V reverse standoff, 1500W peak pulse (10/1000µs), 18.2A peak pulse current, DO-214AB SMC surface mount, -50°C to 150°C junction.","salesMarkdown":"## What the 51V standoff and 1.5 kW ratings mean for rail protection The 1.5SMCJ51CA is a unidirectional TVS diode — it clamps transients on a single polarity, protecting rails up to a 51 V reverse standoff voltage. That 82.4 V ceiling is what the downstream circuitry must survive — the clamping ratio of roughly 1.6× is the design margin you are buying with this class. This is a rail-protection part, not a power-line protection device — it is not rated for continuous overvoltage on the protected node. ## DO-214AB SMC package for surface-mount board assembly The SMC (DO-214AB) package is the medium-footprint surface-mount TVS package — larger than the SOD-123 used for lower-power suppressors, smaller than the P600 axial leads used for multi-kilowatt devices. Strip packaging indicates it ships as cut tape or loose parts, not on a reel — plan your pick-and-place feeder accordingly. Solder-joint thermal cycling endurance is governed by the junction temperature rating of 150 °C maximum, which sets the soak-temperature ceiling for your board-level reliability budget. ## Active production — Diotec Semiconductor The 1.5SMCJ51CA is listed Active by Diotec Semiconductor.","metaTitle":"Diotec 1.5SMCJ51CA TVS Diode, 51V Standoff, 1.5 kW","metaDescription":"Diotec 1.5SMCJ51CA unidirectional TVS diode, 51V standoff, 1500W peak pulse, DO-214AB SMC. Active production. Quoted to order on 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","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"SMC/DO-214AB","Voltage - Breakdown (Min)":"56.7V","Voltage - Clamping (Max) @ Ipp":"82.4V","Voltage - Reverse Standoff (Typ)":"51V","Current - Peak Pulse (10/1000µs)":"18.2A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.8068","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/3fb0502b23c3703cafef426b7b2bf7e5.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMCJ51CA/alternatives.json"},"ai":{"faq":[{"question":"What type of circuit protection is the 1.5SMCJ51CA?","answer":"It is a unidirectional Zener-based TVS diode that clamps transients on a single polarity rail. With a 51 V standoff and 56.7 V minimum breakdown, it protects 48 V industrial and telecom rails from surge events — not a power-line protection device."},{"question":"What package does the 1.5SMCJ51CA use for board assembly?","answer":"DO-214AB (SMC) surface-mount package shipped on strip. The mated stack height is determined by your board layout — the clamping performance at 18.2 A peak pulse means the PCB copper under the cathode tab is the primary heatsinking path during a transient event."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ51CA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/diotec-semiconductor/1.5SMCJ51CA 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}}