TVB180NSA-L Circuit Protection

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Thyristors are electronic components used to control current by applying a certain voltage. TVB180NSA-L is a snubberless thyristor from Vishay Siliconix. It has an ultra-short reverse recovery time, low losses, and a rugged construction, making it suitable for applications that require high power ratings.

The TVB180NSA-L has a maximum current rating of 180A, with a repetitive off-state voltage of 1200V. It has an operating junction temperature range from -40 to 150 °C. The device has an exemplary surge capability of up to 600A, making it suitable for welding applications and motor flash applications.

It is designed to limit short circuit current in motor drive applications and other inductive loads. The device is designed to operate in a linear mode, avoiding the large voltage change in turn-on and turn-off. This reduces the wear and tear on the contact and motor winding.

The TVB180NSA-L achieves its surge ratings and low losses through its fast and soft recovery characteristics. This device includes a diode attached in antiparallel, which aids in fast reverse recovery. Its turn-off time is faster than conventional thyristors, and the load current is reduced quickly due to low di/dt, eliminating overshoot.

The TVB180NSA-L is a very reliable device, with a highly rugged construction. The device is protected with a ceramic insulator at the gate to protect it from arcing and shorts. It is available in a variety of packages, making it suitable for use in both open and closed loop systems.

In open loop systems, the TVB180NSA-L can be used with a wide variety of input signals, including a current limited sinusoidal current as well as a constant voltage drive. In closed loop systems, the device is actively controlled and a reference is applied to the gate terminal to regulate conduction. The device is designed to operate with high accuracy and minimal losses.

In conclusion, the TVB180NSA-L is an ideal option for controlling current in industrial applications, such as motor drives and welding applications. It offers a wide range of features, including a fast and soft recovery characteristics, a rugged construction, and a highly reliable design. The device is available in a variety of packages, making it suitable for use in open and closed loop systems.

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