{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMCJ17A","brand":"Diotec Semiconductor","brandSlug":"diotec-semiconductor","productSlug":"1.5SMCJ17A","canonicalUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ17A","factsUrl":"https://icboms.com/api/mcp/products/1.5SMCJ17A","rawCanonicalId":null},"summary":{"shortDescription":"Diotec Semiconductor 1.5SMCJ17A, unidirectional Zener TVS diode, 1500 W peak pulse, 17 V standoff / 18.9 V breakdown / 27.6 V clamping, 54.3 A peak pulse, DO-214AB (SMC) surface mount, -50°C to 150°C junction.","salesMarkdown":"The 1.5SMCJ17A is a unidirectional Zener-based TVS diode rated 1500 W peak pulse at the standard 10/1000 µs waveform — the workhorse surge shape in IEC 61000-4-5 immunity testing. At that pulse width, a 54.3 A peak current flows into the clamp, and the diode holds the downstream node to 27.6 V maximum. That headroom above the 17 V standoff is what absorbs the transient energy and shunts it away from the protected circuitry. The minimum breakdown of 18.9 V sits about 11 % above the 17 V standoff — the diode stays off during normal operation and turns on sharply once the transient exceeds that threshold. For a 24 V nominal rail, this 17 V standoff part keeps leakage current negligible until a surge event forces it into conduction. This is not a power-line protection device — the listing flags Power Line Protection as No. It is suited for board-level protection on control, signal, or secondary power rails, not for AC line-front protection where a higher-energy device class is required. ## SMC package and junction temperature for board-level deployment Verify the temperature coefficient in the Diotec datasheet if the circuit sees sub-zero ambient.","metaTitle":"Diotec 1.5SMCJ17A TVS Diode, 1.5kW Peak, 27.6V Clamp","metaDescription":"Diotec 1.5SMCJ17A unidirectional TVS diode, 1500W peak pulse, 17V standoff, 27.6V clamping, DO-214AB SMC surface mount. Active — quoted 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)":"18.9V","Voltage - Clamping (Max) @ Ipp":"27.6V","Voltage - Reverse Standoff (Typ)":"17V","Current - Peak Pulse (10/1000µs)":"54.3A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.9158","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/3fb0502b23c3703cafef426b7b2bf7e5.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What package does the 1.5SMCJ17A come in, and is it compatible with standard SMC footprints?","answer":"It ships in the DO-214AB (SMC) package with the standard three-terminal pinout — the cathode is the centre tab, anode and cathode lead the outer pins. Any board designed for the SMC footprint accepts this part without layout changes."},{"question":"Can I use the 1.5SMCJ17A to protect a 24 VDC rail?","answer":"The 17 V standoff sits comfortably below the 24 V rail, so the diode stays off during normal operation. A surge that drives the rail above 18.9 V causes it to clamp at 27.6 V — that is the protection ceiling for the downstream circuitry. Whether that clamp level is acceptable depends on the withstand rating of the ICs on that rail."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ17A","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/diotec-semiconductor/1.5SMCJ17A 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}}