LCE28A Circuit Protection

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LCE28A is a kind of TVS (transient voltage suppressors) diode. As a unique kind of semiconductor, the TVS diode is designed to protect electrical and electronic components from transients caused by electrostatic discharge, inductive load switching, Lightning and other high-energy events. It is a form of diode which is specifically designed to clamp the voltage when it exceeds a certain magnitude. It can then absorb this excess energy and dissipate it in the form of heat. LCE28A has specific application field and working principle.

Application Field

LCE28A is suitable for a wide range of applications, such as AC/DC adapters, power supply, AC/DC motor control, solar control, and LED lighting in consumer electronics. It also performs well in medical equipment, computer equipment and communication networking equipment.

The maximum working voltage of LCE28A is 18V, and the maximum peak pulse voltage is 28V. It can protect against pulses from 8kV ESD, 2.5kV surge, 5kA EFT, and 20A surge. For the non-repetitive pulse waveform, LCE28A can reach 5kA peak pulse current. There is no requirement for capacitors or other components to be used with LCE28A. Therefore, it can be easily and quickly mounted to any circuit board.

Working Principle

LCE28A belongs to the diode type of TVS which has two pins. When high voltage is inputted, it can absorb and conduct the current to protect the devices. The TVS diode also has an active region where it can simulate polysilicon diode or transistor to provide overvoltage protection.

The working principle of LCE28A is based on reverse breakdown voltage, which is the breakdown voltage when the current flows in the opposite direction. When the voltage exceeds the reverse breakdown voltage on the diode, the current passes through as a surge or transient pulse, and the diode is triggered to divert the current to ground. Thus, the voltage drop across the diode is greatly reduced, reducing the voltage on the device side.

Conclusion

LCE28A is an effective solution for overvoltage protection. Its wide range of applications and simple installation make it a suitable choice for many circuits. This TVS diode is dedicated to effectively protect electrical and electronic components from transients, while helping minimize downtime and maximize product performance.

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