{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMCJ11A-AQ","brand":"Diotec Semiconductor","brandSlug":"diotec-semiconductor","productSlug":"1.5SMCJ11A-AQ","canonicalUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ11A-AQ","factsUrl":"https://icboms.com/api/mcp/products/1.5SMCJ11A-AQ","rawCanonicalId":null},"summary":{"shortDescription":"Diotec Semiconductor TVS Zener, 1.5SMCJ11A-AQ, unidirectional 1-channel, 11V standoff, 1500W peak pulse, -50°C to 150°C junction, DO-214AB surface mount, automotive application.","salesMarkdown":"## What the clamping ratings mean for a 12V automotive line A unidirectional TVS Zener in DO-214AB (SMC), the 1.5SMCJ11A-AQ clamps a 12V automotive rail against transients by dissipating the surge energy between its standoff and clamping levels — 11 V reverse standoff (the normal working voltage) rising to 18.2 V maximum clamping at the peak pulse current. The minimum breakdown of 12.2 V gives ~1.2 V of headroom above the 11 V standoff — wide enough to stay fully off during normal 12V battery operation, but still below the transient surge ceiling that downstream ECU inputs must survive. 1.5 kW at 10/1000 µs is the standard IEC 61000-4-5 surge-withstand class for automotive protection — this is the rating the ECU subsystem designer checks against the load-dump pulse in ISO 7637-2. A 1 kW part would be undersized for 24V intermediate bus rails; the 1.5 kW rating gives margin on 12V lines without overspecifying the clamping voltage upward. ## Automotive temperature grade and the -50 to 150 °C junction window An ECU in the engine bay that sees 105°C on a summer day still has thermal headroom before the junction limit is reached. The package is DO-214AB SMC on a metal pad that conducts heat to the PCB — thermal pad design and solder joint integrity affect the real junction temperature as much as the datasheet rating. ## Sourcing posture and lifecycle Quoted to order against BOM quantity; availability and lead time confirmed at RFQ.","metaTitle":"1.5SMCJ11A-AQ TVS Diode, 1.5 kW, 11V, DO-214AB SMC","metaDescription":"Diotec 1.5SMCJ11A-AQ unidirectional TVS Zener, 11V standoff, 12.2V breakdown, 1500W peak pulse, -50°C to 150°C. Surface mount 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)":"12.2V","Voltage - Clamping (Max) @ Ipp":"18.2V","Voltage - Reverse Standoff (Typ)":"11V","Current - Peak Pulse (10/1000µs)":"82.4A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.9260","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/3fb0502b23c3703cafef426b7b2bf7e5.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMCJ11A-AQ/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to 1.5SMCJ11A-AQ in this series?","answer":"The 1.5SMCJ series is spaced at 1V standoff increments; the next step up is the 12V standoff variant (1.5SMCJ12A-AQ) — same package, same peak pulse rating, same footprint. The choice between the 11V and 12V part hinges on whether your normal operating voltage needs the extra 1V headroom or the lower clamping ceiling of the 11V device."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ11A-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/1.5SMCJ11A-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}}