V20E320PL2B

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The V20E320PL2B is an appliance-class overvoltage protection device in the form of a gas discharge tube (GDT). It has two terminals that are designed to carry up to 320 volts. The GDT is designed to protect a connected load from dangerous electrical conditions, such as voltage spikes and power surges.

GDTs, unidirectional and bidirectional Transient voltage suppressors (TVS) devices, can be used in different applications for overvoltage protection. The V20E320PL2B is a TVS device that is great for protecting circuits from dangerous transient overvoltage events.

The V20E320PL2B offers a high overvoltage protection rating of 410 volts and a low capacitance of 18 pF. It is also able to dissipate significant amounts of energy, up to 3.5 joules (J). Its significant surge energy capability makes it suitable for use in very high-power applications.

Working principle

V20E320PL2B gas discharge tubes operate on the principle of a spark gap. When a surge in voltage is detected, an electric arc is formed, which interrupts the surge. The gap also serves as a low-impedance path for the dissipated energy.

When the specified voltage value is exceeded, the gap lightning occurs between the two electrodes. This interrupter fire creates an avalanche breakdown, which causes the overvoltage to be quenched. As the voltage of the spark gap decreases, the gap closes back up, allowing current to flow.

When the current flowing through the gap has decreased to a value close to zero, the gap closes again and the current flow stops. In the case of multiple peaks, the GDT remains ready for subsequent discharge events.

Application field

The V20E320PL2B is widely used in a wide range of industries including automotive, medical, and industrial applications. Automotive applications can include electronic control units, airbags, and light dimming control systems. It is also used to protect power supply lines for medical devices and laboratory equipment, as well as in home appliances such as air conditioners and smart meters. The V20E320PL2B is also used in various industrial applications, such as uninterruptible power supplies and motor controllers.

V20E320PL2B gas tube surge protectors (GDTs) are an effective and reliable method of protecting connected circuits from high voltage events, such as power surges and lightning strikes. Their low capacitance, high surge energy handling, and fast response time make them the perfect choice for appliance-level protection.

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