{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMCJ15A-AQ","brand":"Diotec Semiconductor","brandSlug":"diotec-semiconductor","productSlug":"1.5SMCJ15A-AQ","canonicalUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ15A-AQ","factsUrl":"https://icboms.com/api/mcp/products/1.5SMCJ15A-AQ","rawCanonicalId":null},"summary":{"shortDescription":"Diotec Semiconductor 1.5SMCJ15A-AQ, Zener TVS diode, unidirectional, 15V reverse standoff, 16.7V min breakdown, 24.4V clamping @ 61.5A, 1500W peak pulse, DO-214AB SMC SMT.","salesMarkdown":"## What 15V standoff and 24.4V clamping mean in a circuit The 1.5SMCJ15A-AQ: The 15V reverse standoff is the maximum working voltage the TVS sees in normal operation — the line sits below this without conduction. Once a transient exceeds the 16.7V minimum breakdown, the diode avalanches and clamps the overvoltage at 24.4V maximum, limiting what reaches the protected node. The 10/1000µs waveform is the standard automotive surge profile — a slow-rising high-energy spike, exactly the type generated by inductive load dumps, ECU switching, and wiring harness transients. The 61.5A peak pulse current is the clamping current the diode must survive during that event — not the load current, but the surge current it redirects through itself to ground. At that current the clamping voltage of 24.4V is the ceiling the downstream IC or MOSFET gate sees. ## 1.5kW peak pulse — automotive protection budget 1500W peak pulse rating places this in the mid-range of the SMC-package TVS family — sufficient for ECU input protection on 12V automotive rails where load-dump energy is contained by the vehicle ground plane. The DO-214AB (SMC) footprint uses the standard 6.10 × 2.90 mm pad stack; a single cathode stripe pad, thermally connected to the copper pour on the board, handles the transient dissipation without an external heatsink at the 61.5A rating. Junction temperature rating of -50°C to 150°C maps to the automotive under-hood envelope. The diode sits at the harness entry point, not embedded in an ASIC thermal zone — the upper limit is the diode's own die temperature, not the ambient, so adequate pad copper and airflow margin are the layout variables that matter. ## Unidirectional Zener TVS — what it does and does not protect Single unidirectional channel means protection works in one polarity only — it clamps positive transients and sits reverse-biased in normal operation. For dual-polarity or AC-line protection a bidirectional TVS or opposing diode pair is required; the 1.5SMCJ15A-AQ is not qualified for that role (explicitly notes power line protection: no). The AQ automotive designator on this part signals Diotec's automotive grade — the process and screening level are set for ECU and chassis electronics programs. Lifecycle status is Active per the manufacturer record — normal production flow, no EOL or NRND notice on file. For automotive BOM programs running PPAP or IATF 16949 requirements, the AQ grade confirms the qualification intent but the specific compliance documentation bundle must be requested directly from Diotec or an authorized channel at RFQ.","metaTitle":"1.5SMCJ15A-AQ TVS Diode, 15V Standoff, 1.5kW Peak","metaDescription":"Diotec 1.5SMCJ15A-AQ unidirectional Zener TVS diode, 15V reverse standoff, 24.4V clamping, 1.5kW peak pulse. Automotive applications.","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)":"16.7V","Voltage - Clamping (Max) @ Ipp":"24.4V","Voltage - Reverse Standoff (Typ)":"15V","Current - Peak Pulse (10/1000µs)":"61.5A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.9260","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/3fb0502b23c3703cafef426b7b2bf7e5.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ15A-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/1.5SMCJ15A-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}}