{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMCJ28C","brand":"Diotec Semiconductor","brandSlug":"diotec-semiconductor","productSlug":"1.5SMCJ28C","canonicalUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ28C","factsUrl":"https://icboms.com/api/mcp/products/1.5SMCJ28C","rawCanonicalId":null},"summary":{"shortDescription":"Diotec Semiconductor Zener unidirectional TVS diode, 1.5SMCJ28C, 28V reverse standoff, 31.1V min breakdown, 50V clamping @ 30A, 1500W peak pulse, DO-214AB SMC, -50°C to 150°C junction, surface mount.","salesMarkdown":"## What the 28V standoff and 50V clamping ceiling mean The 1.5SMCJ28C is a unidirectional TVS Zener in DO-214AB (SMC) — a single-polarity device that clamps the protected line to 50 V when a transient exceeds the 31.1 V breakdown threshold. The 28 V reverse standoff rating is the working voltage the line sits at during normal operation; the clamping ceiling at 50 V is what the downstream circuitry sees during the surge event. For a 24 V rail, 28 V standoff gives roughly 4 V headroom — sufficient for line-length inductive kickback without premature conduction. At 50 V clamping, 30 A × 50 V = 1500 W, so the part is specced consistently across the datasheet. ## Thermal and board integration For steady-state reverse bias at 28 V the dissipation is negligible; the 150 °C TJ ceiling matters only during the pulse. SMC (DO-214AB) is the mid-size surface-mount package — larger pad lands than SOD-123, adequate copper pour under the cathode tab for transient heat spreading. The surface-mount form factor suits reflow assembly on multi-layer boards. ## Sourcing posture — Diotec, active production Sourced through independent distribution; availability and lead time confirmed at quote.","metaTitle":"1.5SMCJ28C TVS Diode, 28V standoff, 50V clamping, DO-214AB","metaDescription":"Diotec Semiconductor 1.5SMCJ28C unidirectional TVS Zener, 28V standoff, 31.1V min breakdown, 50V clamping at 30A peak pulse. 1500W peak. Active.","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)":"31.1V","Voltage - Clamping (Max) @ Ipp":"50V","Voltage - Reverse Standoff (Typ)":"28V","Current - Peak Pulse (10/1000µs)":"30A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.8068","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/3fb0502b23c3703cafef426b7b2bf7e5.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I source 1.5SMCJ28C and what is the typical lead time?","answer":"The 1.5SMCJ28C is quoted to order through independent distribution channels; lead time and pricing are confirmed against your BOM quantity at RFQ. Diotec lists it as active, so the part is orderable — the independent channel carries the sourcing reach for both production volumes and spot-demand."},{"question":"What type of device is the 1.5SMCJ28C?","answer":"It is a unidirectional Zener-type TVS (transient voltage suppressor) diode — a single-polarity clamping device that protects a line by breakdown conduction when the transient voltage exceeds 31.1 V, clamping the peak to 50 V for the duration of the 10/1000 µs surge."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ28C","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/diotec-semiconductor/1.5SMCJ28C 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}}