{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5SMCJ43C","brand":"Diotec Semiconductor","brandSlug":"diotec-semiconductor","productSlug":"1.5SMCJ43C","canonicalUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ43C","factsUrl":"https://icboms.com/api/mcp/products/1.5SMCJ43C","rawCanonicalId":null},"summary":{"shortDescription":"Diotec Semiconductor 1.5SMCJ43C unidirectional TVS diode, 1500W peak pulse power, 43V standoff voltage, 47.8V minimum breakdown, 76.7V clamping, DO-214AB (SMC) surface-mount package.","salesMarkdown":"## What the 1.5SMCJ43C protects — and what the voltage ratings mean The 43V standoff voltage defines the maximum continuous operating rail — above it the TVS begins to conduct, below it the protected load never sees the device. The 1.5 kW peak pulse power rating tells you the energy the device can absorb during a single 10/1000 µs transient event without degradation. When a transient does exceed the standoff, the maximum clamping voltage of 76.7V at 19.6A peak pulse current sets the voltage the downstream circuit must survive. The minimum breakdown of 47.8V sits roughly 11% above the standoff — that margin keeps the TVS invisible during normal operation, including typical supply ripple and noise. This part is listed as Type Zener in the catalog, but the 1.5SMC series is a unidirectional TVS designed for transient clamping rather than voltage regulation — an important distinction for directional protection circuits. ## Thermal and structural fit for board-level deployment The 150°C maximum junction temperature is the thermal ceiling — the difference between ambient and 150°C TJ drives the heatsinking the SMC pad needs from the board. The -50°C low end covers outdoor and industrial cold-start environments. Surface-mount termination means the land pattern and solder joint profile are set by the DO-214AB standard footprint — the cathode band marks the direction of protection, which matters for unidirectional polarity on the board. With one bidirectional channel this is a single-polarity suppressor — it clamps positive transients on one rail relative to ground. If your circuit needs bipolar or bidirectional protection, two units in inverse series or a different TVS family handles that role.","metaTitle":"Diotec 1.5SMCJ43C TVS Diode, 1500W, 43V","metaDescription":"Diotec Semiconductor 1.5SMCJ43C unidirectional TVS diode, 1500W peak pulse, 43V standoff, DO-214AB SMC surface mount. 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)":"47.8V","Voltage - Clamping (Max) @ Ipp":"76.7V","Voltage - Reverse Standoff (Typ)":"43V","Current - Peak Pulse (10/1000µs)":"19.6A"}},"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/1.5SMCJ43C/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/diotec-semiconductor/1.5SMCJ43C","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/diotec-semiconductor/1.5SMCJ43C 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}}