{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMCJ45C","brand":"Diotec Semiconductor","brandSlug":"diotec-semiconductor","productSlug":"1.5SMCJ45C","canonicalUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ45C","factsUrl":"https://icboms.com/api/mcp/products/1.5SMCJ45C","rawCanonicalId":null},"summary":{"shortDescription":"Diotec Semiconductor, 1.5SMCJ45C, unidirectional TVS Zener, 45V reverse standoff, 80.3V clamping @ 18.7A, 1.5kW peak pulse, DO-214AB (SMC) surface mount.","salesMarkdown":"## What the clamping specs mean for the protected circuit The 1.5SMCJ45C: The 45V reverse standoff rating is the working voltage — the line sits at or below this in normal operation, and the TVS presents a high-impedance path. When a transient exceeds the standoff, the device avalanche-breaks down at the 50V minimum breakdown and clamps the spike to 80.3V maximum. That clamping ceiling is the voltage the downstream load actually sees — for a 45V rail, 80.3V is within most CMOS and comparator absolute-maximum ratings, so this part protects typical 24V and 40V industrial rails cleanly. At that energy level the part absorbs 1.5 kW of peak pulse power, which is what qualifies it for distribution panel, bus overvoltage, and relay-contact arcing environments. A faster edge event (8/20µs) at the same current would deliver more peak power — the 1.5 kW figure is specific to the 10/1000µs test condition cited on the datasheet. ## Package and thermal margins for board-level integration The DO-214AB (SMC) package with tin-lead finish accepts reflow or wave assembly. Junction temperature is rated to 150°C with the thermal derating curve in the Diotec datasheet setting the real-world current limit at elevated ambient — for a 24V rail the clamping duty at typical surge energy is low enough that the thermal margin holds without a dedicated heatsink pad. The -50°C minimum junction rating makes this suitable for outdoor equipment enclosures and cold-start industrial environments where the TVS must survive before the bulk supply rails have fully charged.","metaTitle":"1.5SMCJ45C TVS Diode, 45V Standoff, DO-214AB","metaDescription":"Diotec 1.5SMCJ45C unidirectional TVS Zener, 45V standoff, 80.3V clamping, 1.5kW peak pulse. Active production — quoted 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":"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","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"SMC/DO-214AB","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":"$0.8068","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/3fb0502b23c3703cafef426b7b2bf7e5.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5SMCJ45C/alternatives.json"},"ai":{"faq":[{"question":"Is 1.5SMCJ45C available via RFQ confirmation and what is the lead time?","answer":"The 1.5SMCJ45C is listed Active by Diotec Semiconductor — quoted to order through independent distribution with lead time and availability confirmed at RFQ. Confirm the full BOM quantity and required date at quote time before placing the order."},{"question":"What package does the 1.5SMCJ45C use — can I drop it into a DO-214AB layout?","answer":"Yes — the part ships in the DO-214AB (SMC) package, surface-mount. The supplier device package field lists SMC/DO-214AB. Pin-compatible SMC TVS diodes from other brands in the same family will drop into the same footprint, but verify the standoff and clamping specs against your surge test condition before qualifying the alternate."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ45C","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/diotec-semiconductor/1.5SMCJ45C 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}}