VC2220K122R014

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TVS - Varistors, MOVs are widely used in order to protect electronic devices from damage due to overvoltage. One of the most popular devices is the VC2220K122R014, a transient-voltage-suppression (TVS) component which provides two-terminal protection against voltage transients and power surges. It is ideal for applications such as DC-DC converters, transformers, resistor networks or bus terminations where normal DC protection levels cannot be achieved.

The VC2220K122R014 consists of two back-to-back attached Zener diodes in a axial leaded package which provides protection against transient voltage. The two sides of the device are connected to the corresponding ground and Vcc at the same time. It is designed to suppress voltage transients that are greater than its clamping voltage, while passing normal operating voltages. As such, it is ideal for applications that require protection from overvoltage transients.

The VC2220K122R014 is characterized by very low leakage current, low clamping voltage and good transient voltage suppressing properties. Its reverse leakage current is typically 0.1 μA at 25Vclamp, while the clamping voltage is Vr = 22V at Ir = 100mA. It also has a minimum stand-off voltage of 1.2kV, with a maximum clamping voltage of 21V. It can suppress transients up to 11.2V peak and offers a clamping energy of 120J at 1.2kV peak.

The working principle of the VC2220K122R014 is fairly straightforward. When a voltage transient occurs that is greater than its clamping voltage (Vr), it triggers and provides a voltage clamping function. This limits the voltage across the device and protects the device from damage due to overvoltage. In most cases, this is all that is necessary to protect an electronic device. Additionally, the device can also offer suppression of transient currents due to its very low reverse leakage current.

The VC2220K122R014 has a wide range of application fields, including AC and DC motors, relays, power supplies, DC/DC converters, industrial PCs, communication equipment, laboratory instruments, modems, routers, and other sensitive electronic equipment. Its low clamping voltage and excellent transient voltage and current suppression capabilities make it ideal for protecting sensitive equipment in harsh environmental conditions.

In conclusion, the VC2220K122R014 is a versatile transient voltage suppressor that provides two-terminal protection against voltage transients and power surges. It is characterized by its low reverse leakage current, low clamping voltage and good transient voltage suppression capabilities. It is suitable for a wide range of applications, from motors and relays to communication equipment and laboratory instruments.

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