{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMCJ28","brand":"Diotec Semiconductor","brandSlug":"diotec-semiconductor","productSlug":"1.5SMCJ28","canonicalUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ28","factsUrl":"https://icboms.com/api/mcp/products/1.5SMCJ28","rawCanonicalId":null},"summary":{"shortDescription":"Diotec Semiconductor 1.5SMCJ28 Zener unidirectional TVS diode, 28V standoff, 31.1V min breakdown, 50V clamping @ 30A, 1.5kW peak pulse, -50°C to 150°C TJ, DO-214AB (SMC) surface mount.","salesMarkdown":"## What the 1.5SMCJ28 is and what it protects It clamps voltage spikes on a line before they reach downstream circuits — the standoff voltage of 28 V sets the continuous working plane, the minimum breakdown of 31.1 V is where the device begins conducting, and the 50 V clamping ceiling is the maximum the downstream load sees at the rated 30 A peak pulse current. ## Peak pulse and clamping mechanics The 10/1000 µs waveform rating is the standard IEC 61000-4-5 surge test shape — 10 µs rise, 1000 µs fall. At that pulse shape the diode dissipates 1.5 kW without entering thermal runaway. The 30 A peak pulse rating is the current the clamping action handles at the specified waveform; the actual let-through voltage is bounded by the 50 V ceiling at that current level. For a 28 V rail, a 31.1 V minimum breakdown gives roughly 11 % headroom above the working voltage before the device starts conducting — a conservative ratio that avoids false triggering under normal line noise. Once a surge exceeds 31.1 V, the diode avalanches and clamps, clamping voltage is held to 50 V max. ## Sourcing and lifecycle posture Sourced to order through independent distribution against BOM quantities — availability and lead time confirmed at RFQ. No official successor or cross-reference is documented in the Diotec family record for this specific order code.","metaTitle":"Diotec 1.5SMCJ28 TVS Diode, 28V standoff, 1.5kW peak","metaDescription":"Diotec 1.5SMCJ28 unidirectional Zener TVS diode, 28V standoff, 31.1V min breakdown, 50V clamping, 1.5kW peak pulse, DO-214AB/SMC. 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","Capacitance @ Frequency":"-","Supplier Device Package":"SMC/DO-214AB","Unidirectional Channels":"1","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":"$0.9158","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/3fb0502b23c3703cafef426b7b2bf7e5.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMCJ28/alternatives.json"},"ai":{"faq":[{"question":"How do I get pricing or check stock on the 1.5SMCJ28?","answer":"Quoted to order through independent distribution — availability, pricing, and lot traceability confirmed at RFQ. No live stock quantity is published; lead time varies by distributor position and order volume."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ28","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/diotec-semiconductor/1.5SMCJ28 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}}