TVB220NSA-L Circuit Protection

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Thyristors, or SIThyristors (silicon controlled rectifiers), are electrical components used to control the flow of electricity within a device or circuit. Thyristors provide a fast and reliable switching solution for higher-current applications like rectification, inverter control, frequency conversion, and other industrial applications. TVB220NSA-L is a high performance three phase thyristor bridge, designed for industrial and utility applications like motor control, adjusting machines, welding industry and synchronous motors.

The TVB220NSA-L is comprised of three independent series connected Thyristor Bricks. Each Brick consists of a series chain of Thyristors individually packed in epoxy-resin blisters with M4 threaded inserts in the base for mounting. The lead-out terminals are capable of accepting a wide range of lug cross sections. With its metal baseplate protecting the p-side of all the thyristors, the TVB220NSA-L series is ideal for both DC and AC applications.

The TVB220NSA-L is designed to block applied voltages of up to 600 VAC, allowing it to be used in a variety of applications. The blocking voltage is the highest voltage the device can handle before it can no longer block the current. It can withstand a high energy surge in the range of 20 kV/μs without damage.

The TVB220NSA-L features a zero voltage switching (ZVS) capability which allows for a smooth transition from non-conduction to conduction of thyristor. This results in abrupt di/dt changes. This feature also reduces the energy lost during switching and prevents damage to components due to inrush currents.

The turn on and turn off of the Thyristors in the TVB220NSA-L is controlled with gate signals. The output surge voltage of the TVB220NSA-L is very low, ensuring safe operation even in the case of an output short circuit. Its short-circuit protected diodes make it suitable for a wide range of applications requiring a robust protection circuit..

The TVB220NSAL is designed to work in a range of temperature conditions from -25℃ to +105℃. This makes it suitable for usage in harsh industrial applications. It is also designed to offer excellent noise immunity and EMC characteristics for stable and reliable operation. It meets UL and CSA compliances.

The TVB220NSA-L is designed to offer outstanding performance and optimize component usage with its compact and light weight construction. The low switching losses and near zero-efficiency loss makes this series of Thyristor ideal for industrial applications. It is also extremely reliable due to its high surge current capability.

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