MOV-20D751K

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MOV-20D751K Application Field and Working Principle

Metal-Oxide Varistors are non-linear devices often used in transient suppression circuitry. MOV-20D751K is a Metal-Oxide Varistor designed to protect electrical components and vital circuits against transient voltages such as those caused by lightning and ESD (electrostatic discharges). MOV-20D751K can improve the reliability and efficiency of electrical systems and protect against over voltage.

The MOV-20D751K is part of a family of MOVs which includes other popular devices such as, 10D226K, 20D134K, 10D431K, 10D241K, and more. They are used in a wide range of industries and applications, including industrial process control, oil and gas, automotive, and solar energy.

MOV-20D751K is selected based on its ability to accurately and rapidly clamp transients to a safe level. Its zener clamping voltage is around 20V, which is enough to protect circuitry from most over voltage events. Its clamping current is 0.75A (typical), which ensures that it can handle large transients.

The MOV-20D751K is based on Varistors, or Variable Resistors, which are two-terminal non-linear semiconductor devices. Basically, a Varistor works by restricting current when the voltage across its terminals increases beyond a certain threshold level. This so called "cut off voltage" is usually around 10-15V in a Metal-Oxide Varistor.

When a transient over voltage occurs, the MOV-20D751K will "trip" and limit the voltage across its terminals. The high-voltage pulse is diverted through the Varistor, preventing it from damaging sensitive components within the circuit. Also, the MOV-20D751K has a very low clamping voltage, so it effectively discharges the energy of the transient and absorbs its power.

The MOV-20D751K has a wide operating temperature range of -55°C to 125°C and a wide continuous voltage range of 6-24V, making it suitable for a variety of applications. It also has a wide range of surge current capability from 0.1A up to 200A and good ESD protection.

The MOV-20D751K is a reliable, cost effective device to protect electrical components from transient voltages. Its applications can be found in many different fields including, telecommunications, automotive, and consumer electronics. By installing MOV-20D751K in appropriate applications, engineers can benefit from increased electrical system reliability, longer product life, and improved safety.

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