TIC108M-S

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Thyristors - SCRs (Silicon-Controlled Rectifiers) are a kind of components used in power electronics, typically used to control the power supply. One of the most popular SCRs is the TIC108M-S. In this article we will look at the application fields and working principle of this device.

Applications

The TIC108M-S is primarily used for switching power supplies, uninterruptible power supplies, electronic motor control and rectification. It is also used in welding equipment. It is designed to operate at up to 600 volts, although more advanced models can handle up to 1500 volts.

The TIC108M-S is often used in static relays and as a shunt reactor in high-power rectifiers. It can also be used for phase control operations, where the SCR is activated to create a break in a circuit, allowing for the control of motor speed in AC or brushless DC motor control. With a maximum power rating of 800 watts, and a turn-off time of no more than one microsecond, the TIC108M-S makes a reliable solution for such tasks.

Working Principle

The TIC108M-S is a two-terminal, three-layer semiconductor device. When a positive potential is applied to the gate terminal, the SCR switches into an "on" state, allowing current to flow through both terminals.

The SCR operates in two main modes: triggering and latching. In the triggering mode, the SCR will switch on when a positive potential at the gate terminal exceeds the current voltage. In the latching mode, the SCR will stay on until it is reset by reducing the current to zero.

The TIC108M-S contains an internal diode for a fast reverse recovery time. This diode helps to reduce stress on the device by providing a path for current to flow when the SCR is switched off. This helps to increase the reliability and longevity of the device.

Conclusion

The TIC108M-S is a popular SCR that has a wide range of applications. It is suitable for a variety of tasks, including power switching, uninterruptible power supplies, motor control and rectification. Its two main operational modes, triggering and latching, allow for a high degree of control and accuracy. The internal diode helps to reduce stress on the device, giving it a longer lifetime and increased reliability.

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