{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMCJ170CA","brand":"Diotec Semiconductor","brandSlug":"diotec-semiconductor","productSlug":"1.5SMCJ170CA","canonicalUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ170CA","factsUrl":"https://icboms.com/api/mcp/products/1.5SMCJ170CA","rawCanonicalId":null},"summary":{"shortDescription":"Diotec Semiconductor 1.5SMCJ170CA bidirectional TVS Zener, 170V reverse standoff, 275V clamping, 5.5A peak pulse (10/1000 µs), 1.5 kW peak pulse power, DO-214AB (SMC) surface mount, -50°C to 150°C junction.","salesMarkdown":"## What the 1.5SMCJ170CA protects The 1.5SMCJ170CA is a bidirectional TVS Zener in the DO-214AB (SMC) package — a single-channel clamping device that fires when a transient lifts either rail above the standoff threshold. Reverse standoff sits at 170 V typ, so the protected rail can ride at or below that DC level without the TVS drawing significant leakage — it idles off until a surge arrives. ## Sizing the clamp for a 170 V rail The guard band from 170 V standoff to 189 V minimum breakdown is roughly 11 % — adequate for 170 Vnom rails with typical line transients, but a 300+ Vsurge on a 170 V rail will exceed the breakdown and conduct through the clamp. Power-line protection is explicitly listed as No on this part — it is a secondary/supply-rail clamp, not a service-entrance device. For line-rated suppression the 1.5 kW rating is insufficient. ## SMC board integration and rework The DO-214AB landing pattern accepts standard hot-air or IR rework — the cathode bar on the SMC marking side sits over the thermal pad area, and the recommended paste stencil thickness follows the typical 4–5 mil IPC profile for this footprint. Junction temperature ceiling is 150 °C; the board-side thermal resistance of the SMC tab to ambient determines whether the part runs cool enough for a continuous overvoltage condition or only for discrete transients. In clamp, derate the 1.5 kW rating against ambient above 25 °C per the diode derating curve. No official second-source or pin-compatible successor is cited in the record — confirm fit against the existing BOM line before committing.","metaTitle":"1.5SMCJ170CA TVS Diode, 170V standoff, 275V clamp","metaDescription":"Diotec 1.5SMCJ170CA bidirectional TVS Zener, 170V standoff, 275V clamp @ 5.5A, 1.5kW peak. DO-214AB SMC SMD. 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","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"SMC/DO-214AB","Voltage - Breakdown (Min)":"189V","Voltage - Clamping (Max) @ Ipp":"275V","Voltage - Reverse Standoff (Typ)":"170V","Current - Peak Pulse (10/1000µs)":"5.5A"}},"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/1.5SMCJ170CA/alternatives.json"},"ai":{"faq":[{"question":"Where can I source the 1.5SMCJ170CA and what is the lead time?","answer":"No live inventory quantity is published — confirm the supplier's lot count and date code requirements before ordering."},{"question":"What does the 170 V standoff and 275 V clamping voltage mean for my circuit?","answer":"The 170 V standoff means the TVS idles off on a 170 Vnom rail without drawing significant leakage."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ170CA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/diotec-semiconductor/1.5SMCJ170CA 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}}