{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMCJ22","brand":"Diotec Semiconductor","brandSlug":"diotec-semiconductor","productSlug":"1.5SMCJ22","canonicalUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ22","factsUrl":"https://icboms.com/api/mcp/products/1.5SMCJ22","rawCanonicalId":null},"summary":{"shortDescription":"Diotec Semiconductor, Zener TVS, 1.5SMCJ22, 22V reverse standoff, 39.4V clamping max, 38.1A peak pulse, 1500W peak, unidirectional 1-channel, surface mount, DO-214AB SMC package, -50°C to 150°C junction.","salesMarkdown":"## What the clamping ratings mean for your board The 1.5SMCJ22: The 22V reverse standoff is the working rail the TVS must not clip during normal operation — it sits above the nominal supply voltage so the diode stays off the characteristic curve until a transient arrives. When the surge exceeds 24.4V (the minimum breakdown), the device turns on and clamps the peak at 39.4V, limiting what reaches the downstream circuitry. At that clamping voltage the part sinks 38.1A peak pulse (10/1000 µs waveform), which is the survivable surge current rating for this class of board-level TVS. One unidirectional channel means this part protects a single polarity — positive transients on a positive rail. For AC or bidirectional protection you need a dual-polarity or back-to-back TVS; this is not a symmetric clip. ## DO-214AB SMC — board footprint and thermal context Surface-mount SMC (DO-214AB) is the standard 2-pin J-bend package for TVS diodes on power and signal boards. The cathode bar on the package marks polarity — confirm the orientation before reflow, because a reversed TVS conducts forward-biased at roughly 0.7V and provides zero transient protection. Operating junction temperature runs to 150°C, which gives margin on boards that see elevated ambient or thermal cycling — the 150°C ceiling is set by the die attach and epoxy system, not the silicon alone.","metaTitle":"1.5SMCJ22 TVS Diode, 22V Standoff, 39.4V Clamping","metaDescription":"Diotec 1.5SMCJ22 unidirectional Zener TVS, 22V standoff, 39.4V clamping at 38.1A peak pulse, 1500W peak, DO-214AB SMC, active production. Quoted to order.","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)":"24.4V","Voltage - Clamping (Max) @ Ipp":"39.4V","Voltage - Reverse Standoff (Typ)":"22V","Current - Peak Pulse (10/1000µs)":"38.1A"}},"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/1.5SMCJ22/alternatives.json"},"ai":{"faq":[{"question":"What is the 1.5SMCJ22 used for on a board?","answer":"As a unidirectional Zener TVS, it clamps lightning and switching transients on a single polarity rail — the 22V standoff makes it suited for 12V and 18V nominal rails where the clamping ceiling of 39.4V keeps the downstream silicon below its abs-max during a surge event."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ22","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/diotec-semiconductor/1.5SMCJ22 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-14T23:42:31.687Z","lastPublished":"2026-09-14T23:42:31.687Z","indexable":true}}