{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMCJ28A-AQ","brand":"Diotec Semiconductor","brandSlug":"diotec-semiconductor","productSlug":"1.5SMCJ28A-AQ","canonicalUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ28A-AQ","factsUrl":"https://icboms.com/api/mcp/products/1.5SMCJ28A-AQ","rawCanonicalId":null},"summary":{"shortDescription":"Diotec Semiconductor 1.5SMCJ28A-AQ unidirectional Zener TVS, 28V reverse standoff, 31.1V min breakdown, 45.4V clamping @ 33A peak pulse, 1500W peak, SMC/DO-214AB, surface mount, automotive, -50°C to 150°C junction.","salesMarkdown":"## What the 1.5SMCJ28A-AQ protects This is a unidirectional Zener-based TVS (Transient Voltage Suppressor) — it clamps voltage spikes on a single polarity rail by conducting once the transient exceeds the breakdown threshold. That 45.4 V clamping ceiling is what the downstream circuitry never sees. A 1.5 kW TVS in SMC (DO-214AB) is the standard choice for automotive ECU input protection and 24 V industrial rail clamping. ## Automotive junction temperature and package Junction temperature range is -50°C to 150°C — the upper bound puts this in the automotive thermal class, suitable for engine-adjacent modules and ECU protection zones. The SMC (DO-214AB) package is the industry-standard high-current TVS footprint; the cathode bar connects directly to the thermal pad for surge heat dissipation. Surface-mount termination suits reflow assembly on multi-layer boards without any lead-forming step. Diotec Semiconductor lists this as Active. The part ships in strip packaging — confirm reel or cut-tape orientation before committing to a pick-and-place program.","metaTitle":"1.5SMCJ28A-AQ Zener TVS Diotec 28V 1500W SMC","metaDescription":"Diotec 1.5SMCJ28A-AQ unidirectional Zener TVS, 28V standoff, 45.4V clamping, 1500W peak pulse, automotive grade SMC/DO-214AB. Sourced 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":"Automotive","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":"45.4V","Voltage - Reverse Standoff (Typ)":"28V","Current - Peak Pulse (10/1000µs)":"33A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.9260","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/3fb0502b23c3703cafef426b7b2bf7e5.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to 1.5SMCJ28A-AQ in this Circuit Protection family?","answer":"The 1.5SMCJ series covers multiple standoff voltages from 5 V up through the automotive 28 V rating. Any pin-compatible SMC/DO-214AB TVS at 28 V standoff with a 1500 W peak rating in the same unidirectional polarity is a candidate, but the specific breakdown and clamping values must be confirmed against the BOM line before substituting — a 1.5SMCJ part with a different voltage suffix clamps at a different ceiling and will not protect the same rail."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ28A-AQ","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/diotec-semiconductor/1.5SMCJ28A-AQ 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}}