{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMCJ45","brand":"Diotec Semiconductor","brandSlug":"diotec-semiconductor","productSlug":"1.5SMCJ45","canonicalUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ45","factsUrl":"https://icboms.com/api/mcp/products/1.5SMCJ45","rawCanonicalId":null},"summary":{"shortDescription":"Diotec Semiconductor, 1.5SMCJ45 unidirectional TVS Zener diode, 45V reverse standoff, 80.3V clamping max @ 18.7A, 1500W peak pulse, DO-214AB SMC surface-mount package.","salesMarkdown":"The 1.5SMCJ45: The 1500 W peak pulse rating defines the transient energy this diode can absorb in a 10/1000 µs surge waveform without degrading. In practice, the clamping voltage at the rated peak current of 18.7 A sits at 80.3 V — that 35 V gap above the 45 V standoff is the protection headroom the downstream circuit sees during an event. ## Clamping performance and the 45 V standoff point The reverse standoff of 45 V means the TVS sits silently below that threshold, drawing only leakage current. For a 5 V rail protected by this part, the clamping margin is comfortable; for a 24 V industrial rail, the 45 V standoff is a close fit that leaves little guard band — check the system transient budget before committing to this part on higher-voltage rails. ## Operating temperature and junction ceiling The junction temperature rating is -50°C to 150°C, which is a wide industrial range. The DO-214AB SMC package with its exposed pad die-attach is the thermal path — the PCB pad underneath the cathode tab carries heat into the board copper, not the housing. Verify the derating curve against your board's thermal resistance if the part will see sustained high-ambient conditions. Surface-mount SMC/DO-214AB — this is a standard industry footprint compatible with most reflow profiles. The unidirectional single-channel configuration means it protects one polarity only; bidirectional protection requires a separate part.","metaTitle":"Diotec 1.5SMCJ45 TVS Diode, 1500W Peak Pulse","metaDescription":"Diotec 1.5SMCJ45 unidirectional TVS diode, 45V standoff, 80.3V clamping at 18.7A, DO-214AB SMC package. Rated 1500W peak pulse. Active status.","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)":"50V","Voltage - Clamping (Max) @ Ipp":"80.3V","Voltage - Reverse Standoff (Typ)":"45V","Current - Peak Pulse (10/1000µs)":"18.7A"}},"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/1.5SMCJ45/alternatives.json"},"ai":{"faq":[{"question":"What is the 1.5SMCJ45 used for?","answer":"Common deployments include input protection on power rails, signal lines, and secondary clamping stages in power supplies."},{"question":"Who supplies the 1.5SMCJ45 and how is it quoted?","answer":"Sourced through independent distribution channels. Availability and volume pricing are confirmed at RFQ — Diotec Semiconductor is the listed brand, and the part is quoted against BOM quantity with lead time and pricing confirmed on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ45","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/diotec-semiconductor/1.5SMCJ45 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}}