ERZ-V20R331

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The ERZ-V20R331 is a surge absorber developed by Mitsubishi Electric Corporation for protection of electronic units from damage due to overvoltage & transients. It is classified as a TVS (Transient Voltage Suppressor) - Varistor, MOV (Metal Oxide Varistor) type device. It has strong electromagnetic immunity and high surge withstand capability, and offers superior performance than other TVS-Varistors, MOVs.

The ERZ-V20R331 is designed with advanced multi-layered structures of Nylon, resin, and other materials to safely absorb and disperse the surge that is generated by lightning, or various types of inductive, capacitive and electrostatic dipoles. By utilizing the high dielectric withstand voltage and multiple layers of protection, the absorber effectively suppresses large surges or ESD (Electrostatic Discharge) induced voltages, resulting in reliable protection against the potential threat of component damage.

The ERZ-V20R331 is designed for safety application in both industrial and household environments. It is suitable for use in applications such as air conditioners, refrigerators, microwave ovens, washing machines, fans, TV and monitor displays, and other consumer electronics. It is also ideal for a wide range of medical and automotive electronics.

The ERZ-V20R331 features an NTC Thermistor element that exhibits a low impedance in the forward voltage direction. This protective element helps to reduce the leakage current and prevent secondary circuit damage. Additionally, this device is designed with a wide surge clamping range that can absorb high voltage transients without causing electrical shocks.

The ERZ-V20R331 is protected with a non-toxic plastic housing that is safe for users and prevents any possible environmental hazards that may result from accidental exposure. The device is also RoHS compliant and features a Halogen-free lead-free construction, making it an ideal choice for a wide range of applications.

The ERZ-V20’s working principle is based on injecting a high capacitance-to-voltage (C/V) to the MOV for clamping excess voltage and current. When a transient overvoltage or current appears in the circuit, the MOV acts as a high capacitance element to absorb the surge and limit its energy. As the surge current passes through the MOV, it causes an increase in the junction temperature of the device. The thermistor element acts as a temperature-sensing element that monitors the junction temperature of the MOV and limits any further surge current. Once the surge passes, the MOV returns to its normal state.

In summary, the ERZ-V20R331 is a TVS - Varistor, MOVs type surge protector that is designed for industrial and consumer electronics applications. The device’s advanced multi-layer structure provides superior protection against large surge currents and ESD events, while its thermistor element limits any further surge current when temperatures rise. This compact device is safe, RoHS compliant, and ideal for a wide range of applications.

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