{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMC18A-Q","brand":"Bourns Inc.","brandSlug":"bourns-inc","productSlug":"1.5SMC18A-Q","canonicalUrl":"https://icboms.com/bourns-inc/1.5SMC18A-Q","factsUrl":"https://icboms.com/api/mcp/products/1.5SMC18A-Q","rawCanonicalId":null},"summary":{"shortDescription":"Bourns Inc. 1.5SMC18A-Q TVS diode, Type Zener, Grade Automotive, AEC-Q101, 1500W peak pulse power, 15.3V reverse standoff, DO-214AB (SMC) package, Tape & Reel.","salesMarkdown":"## What the automotive AEC-Q101 grade means for your BOM The 1.5SMC18A-Q carries AEC-Q101 qualification, which is the automotive discrete semiconductor stress-test standard. This means the part has passed the full suite of reliability screens — temperature cycling, high-temperature reverse bias, and preconditioning — and is eligible for PPAP submission to an OEM. A non-automotive TVS rated only to 85°C ambient would derate its surge capability well before the engine-bay soak temperature. ## Surge rating and the 10/1000µs pulse waveform The 1500W peak pulse power is verified with a 10/1000µs exponential waveform, the standard pulse shape from the telecom surge requirements (GR-1089, ITU-T K.20, IEC 61000-4-5). At that waveform, the device clamps a 60.3A peak current to 25.2V maximum. The 15.3V reverse standoff voltage means the TVS draws negligible leakage below that DC rail voltage — it sits transparently across a 15V or 12V supply bus until a transient exceeds the 17.1V minimum breakdown threshold. The clamping voltage of 25.2V is the voltage the protected circuit must survive; for a 15V-rated IC input, this leaves 10V of margin above the nominal rail. The DO-214AB (SMC) package is the standard large-footprint TVS package for 1.5kW-rated devices. It is a surface-mount package with a wide copper tab on the cathode side that conducts heat into the PCB copper pour during the surge event. The tape-and-reel packaging is compatible with standard pick-and-place lines. The single unidirectional channel means this is one TVS diode in a two-terminal package — the cathode is marked on the body and must be oriented toward the positive rail. The power line protection flag is 'No', which means this device is not designed for AC mains or high-voltage power-line clamping; it is intended for DC rail protection in electronic equipment.","metaTitle":"Bourns 1.5SMC18A-Q TVS Diode, 1500W, AEC-Q101, DO-214AB","metaDescription":"Bourns 1.5SMC18A-Q automotive TVS diode, 1500W peak pulse power, AEC-Q101 qualified, 15.3V standoff, DO-214AB SMC. Active production, available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"Bourns Inc.","Type":"Zener","Grade":"Automotive","Series":"*","Package":"Tape & Reel (TR)","Applications":"Telecom","Mounting Type":"Surface Mount","Qualification":"AEC-Q101","Package / Case":"DO-214AB, SMC","Product Status":"Active","lifecycle_stage":"unknown","Power - Peak Pulse":"1500W (1.5kW)","Operating Temperature":"-55°C ~ 150°C (TJ)","Power Line Protection":"No","Capacitance @ Frequency":"-","Supplier Device Package":"DO-214AB (SMC)","Unidirectional Channels":"1","Voltage - Breakdown (Min)":"17.1V","Voltage - Clamping (Max) @ Ipp":"25.2V","Voltage - Reverse Standoff (Typ)":"15.3V","Current - Peak Pulse (10/1000µs)":"60.3A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.2361","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/00f8f6b6bc06cde1cd0f010601823fa9.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is 1.5SMC18A-Q's listed type and grade on this Circuit Protection line?","answer":"The type is Zener (a unidirectional TVS diode), and the grade is Automotive. The Automotive grade means the part is manufactured and tested to the quality and reliability standards required for automotive electronics, including AEC-Q101 qualification."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/bourns-inc/1.5SMC18A-Q","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/bourns-inc/1.5SMC18A-Q 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}}