{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMCJ170C","brand":"Diotec Semiconductor","brandSlug":"diotec-semiconductor","productSlug":"1.5SMCJ170C","canonicalUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ170C","factsUrl":"https://icboms.com/api/mcp/products/1.5SMCJ170C","rawCanonicalId":null},"summary":{"shortDescription":"Diotec Semiconductor, 1.5SMCJ170C, Zener TVS diode, 170 V standoff, 304 V clamping max, 4.9 A peak pulse, 1500 W peak pulse, SMC/DO-214AB, bidirectional, -50°C to 150°C junction.","salesMarkdown":"The 1.5SMCJ170C clamps transients at 304 V maximum when the peak pulse current reaches 4.9 A — the downstream circuit sees 304 V, not the incoming surge. The 170 V standoff rating is the working voltage the TVS tolerates without conduction during normal operation; it sits idle on the rail until a transient exceeds the 189 V minimum breakdown threshold. Bidirectional (the C suffix) means it handles both positive and negative spikes on the same two terminals — useful on AC rails or differential pairs where a unidirectional part would clip one polarity. Peak pulse power is 1500 W at the standard 1.5/50 µs waveform — the 1.5 µs rise and 50 µs decay define the surge shape in IEC 61000-4-5 testing. The part absorbs the surge energy and returns to its high-impedance state once the event passes, provided junction temperature stays within the 150 °C ceiling. ## SMC package, 150 °C junction — thermal pad and board-level fit The SMC/DO-214AB is the standard large-footprint TVS package in this power class — the cathode bar is the thermal dissipation path. A generous landing pad and thermal via array under the cathode tab keep Tj below 150 °C during repetitive surge events. The -50°C lower operating limit covers outdoor and cold-start environments; the 150°C upper ceiling gives headroom for board-level thermal stacking in enclosed equipment. ## Active production — no cross-reference on record Diotec Semiconductor lists 1.5SMCJ170C as Active. The sibling in this series without the C suffix is unidirectional — it clips only one polarity, which is the right choice for DC supply rails where negative transients are not a concern.","metaTitle":"1.5SMCJ170C TVS Diode, 170V standoff, 304V clamp, SMC","metaDescription":"Diotec Semiconductor bidirectional TVS diode, 170 V standoff, 304 V max clamping, 4.9 A IPP, 1500 W peak pulse in SMC/DO-214AB. Active — 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","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"SMC/DO-214AB","Voltage - Breakdown (Min)":"189V","Voltage - Clamping (Max) @ Ipp":"304V","Voltage - Reverse Standoff (Typ)":"170V","Current - Peak Pulse (10/1000µs)":"4.9A"}},"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/1.5SMCJ170C/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between this bidirectional TVS and a unidirectional SMCJ in the same series?","answer":"The C suffix denotes bidirectional — the part conducts in both polarities, so a single device protects both positive and negative voltage excursions. A unidirectional SMCJ (no C suffix) clips only the forward-bias direction and will not conduct on negative transients, which matters on AC-coupled lines or RS-485 differential bus segments where both polarities can appear."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ170C","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/diotec-semiconductor/1.5SMCJ170C 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}}