V385LA20A

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

TVS (Transient Voltage Suppression) devices are designed to protect against electrostatic discharges (ESD) and transient voltage surges. Varistors, MOVs (Metal Oxide Varistors), and GDTs (Gas Discharge Tubes) are the three primary types of TVS devices. This article focuses on the V385LA20A application field and working principle.

The V385LA20A is a bidirectional, light sensitive, moveable metal oxide varistor with an operating voltage range of 12V to 24V DC. It is designed for use in DC-DC converters, audio systems, automotive electronics, and other light-sensitive noise suppression applications. This device offers excellent protection against transient voltage surges up to 100V per pole and features an integrated zener diode to provide additional protection against noise pulses.

The V385LA20A is a bidirectional device, meaning it has two terminals--one positive and one negative--which the transient voltage must pass through in order to be suppressed. This device works on the principle of variable impedance, wherein the varistor acts as an impedance buffer to control the voltage and current of the transient voltage. It allows only those voltages that are within its voltage-dependent clamping range to pass through, while it absorbs and dissipates those that are outside of the range. The V385LA20A is designed to be insensitive to temperature and humidity changes, ensuring reliable protection from ESD events.

The V385LA20A is constructed using a ceramic body which is filled with metal oxide particles. These particles are composed of zinc oxide and other materials and are arranged into a lattice-like structure. When a voltage surge passes through the varistor, the particles become polarized and form an electrical field which causes a current to be generated. This current causes a voltage drop, which acts to reduce the amount of surge energy that passes through the device. The Varistor also has an internal breakdown voltage threshold, which is the point at which the current being applied causes the particles to become saturated and the device to activate.

The V385LA20A is an ideal device for a wide range of applications, including DC-DC converters, automotive electronics, and audio systems. The device’s integrated ESD protection and zener diode make it an excellent choice for noise suppression. Its high current-handling capability and bidirectional design make it ideal for use in applications where transient voltage surges can occur in either direction. Its variable impedance principle ensures reliable protection against dangerous and costly ESD events. In summary, the V385LA20A is a perfect fit for applications requiring protection from both transient voltage surges and electrostatic discharges.

The specific data is subject to PDF, and the above content is for reference