VE0805K121R030 Circuit Protection

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

TVS - Varistors, MOVs

VE0805K121R030 is a varistor that belongs to the TVS (Transient Voltage Suppressor) family of components whose main purpose is to protect against electrical overvoltage transients or surges. It is usually used for ESD (Electrostatic Discharge) or to protect ICs from overvoltage. It is typically used in personal computers, laptops, automotives, consumer electronics and communication systems, as well as in many other electronic circuits.

Application Field

This component is designed for use in a variety of applications where voltage transients and surges may occur, such as in automotive, computers, consumer electronics, industrial, communications, and other electronic systems. The VE0805K121R030 is suitable for direct ESD (electrostatic charge) protection. It is also used to protect circuits from overvoltage events, especially in circuitry using high frequencies and sensitive components.

Working Principle

The primary purpose of the VE0805K121R030 or any varistor is to safely absorb and dissipate excessive voltage surges that may otherwise cause damage to the other components in the system. This is achieved by providing a medium with a multiplicity of junction points, known as a p-n junction, which responds to incoming voltages by changing its impedance from a very high resistance to a very low resistance, thereby allowing the voltage to dissipate. The p-n junction also creates a capacitive effect, which dampens the effect of high frequency incoming signals.

The VE0805K121R030 has a maximum clamping voltage of 121V and a clamping energy rating of 0.30J. It also has an operating temperature of -55°C to +125°C and a rated power of 315mW. It has a high surge current rating of 40A and a low capacitance value of 8pF, making it an ideal choice for impedance matching and noise suppression.

By absorbing and dissipating excessive incoming voltage and providing effective impedance matching and noise suppression, the VE0805K121R030 helps ensure that circuits remain operational and components remain safe from damage. This component, along with other TVS components, is essential for protecting electronic systems and circuits from damage due to voltage transients or surges.

The specific data is subject to PDF, and the above content is for reference