{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMCJ33","brand":"Diotec Semiconductor","brandSlug":"diotec-semiconductor","productSlug":"1.5SMCJ33","canonicalUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ33","factsUrl":"https://icboms.com/api/mcp/products/1.5SMCJ33","rawCanonicalId":null},"summary":{"shortDescription":"Diotec Semiconductor Zener TVS, 1.5SMCJ33, unidirectional, 33V standoff, 36.7V breakdown, 59V clamping @ 25.4A peak pulse, 1500W peak pulse power, -50°C to 150°C junction, SMC/DO-214AB surface-mount.","salesMarkdown":"## What the 1.5SMCJ33 does on a board The 1.5SMCJ33 is a unidirectional Zener-based TVS diode — it sits reverse-biased across a power or signal rail and clamps transient overvoltage spikes to a safe ceiling before they reach downstream circuitry. A designer picks this rating against the worst-case transient amplitude and source impedance on the target rail; if the available peak current exceeds 25.4 A, a parallel TVS or a higher-power part is needed. ## Junction temperature and thermal margin The junction operating range runs to 150 °C, which gives good headroom for automotive and industrial environments where the ambient at the PCB can hit 85 °C and the TVS self-heating during a clamping event adds delta-T on top. The -50 °C low end covers outdoor and cold-start conditions. At 150 °C junction maximum and a 25.4 A clamping event, the instantaneous dissipation during the pulse is significant — board-level thermal design (copper pad under the SMC body) determines whether the transient thermal impedance stays within the rated pulse window. SMC/DO-214AB is the standard 2-pin surface-mount outline for 1500 W TVS parts — it mounts to a landing pattern shared across the full 1.5SMCxx series variants, so a layout accepting one standoff voltage accepts any other voltage in the series without a board spin. Strip packaging is the standard reel-free option for lower-volume pick-and-place. The unidirectional single-channel topology means it protects one polarity only — line-to-ground on a positive rail. For AC or bidirectional protection a dual-polarity or back-to-back part would be required; this part is not a power-line protection device.","metaTitle":"1.5SMCJ33 TVS Diode, 33V standoff, 1.5kW peak","metaDescription":"Diotec Semiconductor 1.5SMCJ33 unidirectional Zener TVS, 33V standoff, 36.7V breakdown, 59V clamping, 1.5kW peak pulse at DO-214AB.","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)":"36.7V","Voltage - Clamping (Max) @ Ipp":"59V","Voltage - Reverse Standoff (Typ)":"33V","Current - Peak Pulse (10/1000µs)":"25.4A"}},"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/1.5SMCJ33/alternatives.json"},"ai":{"faq":[{"question":"How do I source the 1.5SMCJ33 — quote or stock?","answer":"For production volumes or a replenishment order, submit the BOM quantity and the sales team will confirm lead time and lot traceability."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ33","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/diotec-semiconductor/1.5SMCJ33 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}}