MOV-14D390K

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TVS - Varistors, MOVs, are electronic components designed to protect circuits from transient overvoltages.The MOV-14D390K is a strain relief type, 14mm, 380V, unidirectional, 30J, 2-electrode overvoltage protection device from Bourns Inc.

The application field of MOV-14D390K includes all electrical circuits with overvoltage protection requirements. It can be applied to all kinds of power supply systems and computers, communication equipment, electronic measurement systems and measuring equipment, switching power supplies, air conditioning systems, microwave ovens, electronic ballasts, industrial automation equipment, instrumentation systems.

MOV-14D390K can protect a circuit from transient overvoltages caused by events such as switching surges, lightning, and inductive loads. The working principle of MOV-14D390K is based on the inverse current-voltage relationship of a metal-oxide element. When the voltage applied to the MOV exceeds its rated dissipation voltage (V(DRM)), it will break down and the conduction mechanism will be activated. This will reduce the circuit voltage and limit the peak voltage to a safe level.

When the peak voltage exceeds the voltage of breakdown but remains low, the metal oxide element increases its effective resistance to the breakdown current, causing the voltage in the circuit to decrease.Once the surge voltage has passed, the voltage across the MOV will return to its normal level and the device will resume its protective function. The internal design of MOV-14D390K includes an extra thick metal oxide layer which provides excellent surge protection.

The external environment, however, can greatly affect the performance of MOVs. Heat, humidity, and water can damage the integrity of the metal-oxide element, reducing its effectiveness in protecting a circuit. External electrodes can corrode and loosen connections, causing high leakage currents. Therefore, MOVs must be properly installed and maintained to reduce the risk of damage due to environmental factors.

In summary, MOV-14D390K is a high-performance strain relief type, 14mm, 380V, unidirectional, 30J, 2-electrode overvoltage protection device widely used in a number of applications. It is based on the inverse current-voltage relationship of a metal-oxide element and offers excellent surge protection to circuits that it is protecting. It must be properly installed and maintained to reduce the risk of damage due to environmental factors, ensuring its proper functioning.

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