CN0603M4G

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Transient Voltage Suppressors (TVS), also known as varistors, are used to protect electronic circuits from electrical overstress. They provide an alternate path for high-voltage transients to be conducted away from sensitive electronics. The CN0603M4G is a type of MOV (Metal Oxide Varistor) typically used for low current applications. In this article, we’ll discuss the application field and working principle of the CN0603M4G.

Application Field

The CN0603M4G is a low-current varistor designed for low temperature applications. Its low Clamping Voltage (80V to 200V) and maximum surge current (500mA) make it well suited for use in consumer electronics, industrial appliances, and many other applications that require protection against electrical overstress. Additionally, its low Thermal Resistance (2.3°C/W), Wide Operating Temperature Range (125°C to +125°C), and Dual Mounting Pads make it an ideal choice for use in extreme environments.

Working Principle

The CN0603M4G works on the principle of voltage dependent capacitance. When electrical voltage is applied, its metal oxide dielectric changes its characteristics from insulator to conductor. This allows the current to pass through the device quickly, thus preventing damage from electrical overstress. This non-linear behavior allows the device to act like an open circuit at normal operating voltage, and like a low resistance circuit at predefined over-voltage levels.

The zener voltage (clamping voltage) of the varistor is an important characteristic of its performance. This is the voltage at which the device begins to conduct current, allowing the voltage to be clamped at a safe level. The zener voltage of the CN0603M4G typically ranges from 80V to 200V. The typical Maximum Surge Current rating is 500mA.

The thermal characteristics of the device are also important. The device is designed to dissipate energy during operation, thus preventing overheating and damage to sensitive equipment. The Maximum Operating Temperature and Thermal Resistance of the device should be taken into account when selecting the appropriate package for a given application.

Conclusion

The CN0603M4G is a type of MOV (Metal Oxide Varistor) commonly used in low current applications. It features low Clamping Voltage (80V to 200V) and maximum surge current (500mA), along with a wide operating temperature range (125°C to +125°C). The thermal characteristics of the device allow it to dissipate excessive energy and protect sensitive equipment from electrical overstress. This makes it suitable for use in a variety of consumer electronics, industrial appliances, and harsh environments.

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