Product Description

The SMCJ78A is a 1500W unidirectional TVS diode in the standard DO-214AB (SMC) package. Designed to protect sensitive electronics, it clamps high-energy transients and surges from lightning, ESD, and inductive switching. With a 78V standoff voltage, it is a direct, reliable, and cost-effective replacement for equivalent parts from NXP and Littelfuse, ensuring robust circuit protection in industrial, automotive, and telecom applications.

Key Parameters

  • Standoff Voltage: 78V – It sits quietly on your 78V rail, minding its own business during normal operation.
  • Breakdown Voltage: 86.7V - 95.8V @1mA – The moment voltage spikes past this range, it wakes up instantly and jumps into action.
  • Clamping Voltage: 126V at 11.9A – Even during a serious surge, it holds the line to keep your sensitive chips under 126V.
  • Peak Pulse Power: 1500W – This thing absorbs brutal transient energy like a miniature surge superhero.
  • Ultra-low leakage: Just 1µA – It barely sips any power, so it won’t load your circuit or waste energy.

Typical Applications

  • Industrial Electronics: Protection for PLCs, motor drives, and control systems.
  • Telecommunications: Safeguarding communication lines and data interfaces.
  • Automotive Systems: Protecting ECUs, sensors, and CAN bus networks.
  • Power Supplies: Preventing damage from inductive load switching.
  • Consumer Electronics: Shielding sensitive circuits in appliances and computing devices

SMCJ78A Datasheet

SMCJ78A tvs diode datasheet下载

More Information

For more product details, please visit the website:

https://en.semiware.com/product-general-tvs/smcj78a

About Semiware
Semiware has a comprehensive product lineup of circuit protection device products. The company leverages its technology in the semiconductor field and application background in end products to serve customers in the electronics, automotive and industrial markets. For more information, please visit semiware official website: https://en.semiware.com/

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