OT413,127

Thyristors – TRIACs

Thyristors are semiconductor switching devices, which can be used to control the size of an electric current. They are also known as TRIACs, which stands for Triode for Alternating Current. The OT413,127 is a specifically designed Thyristor TRIAC whose application field and working principle shall be discussed in this article.

OT413,127 Application and Characteristics

The OT413,127 is an insulated gate thyristor (IGT) with a gate-controlled turn-off current. It is ideal for applications such as lighting and appliance control, for example switching and dimming. The OT413,127 is designed specifically to handle extreme temperature conditions, thus making it a reliable device.

The device is rated 650V but has a maximum working voltage of 150V. Furthermore, the maximum current range is preferred between 140A to 310A. It is important to note that the OT413,127 has a certain amount of voltage interference, which directly affects the current, therefore it is not recommended to be used in applications with fluctuating voltage such as AC power sockets. Additionally, the OT 413,127 is susceptible to resistive heating if a high current is conducted for an extended period of time, making it best suited for short-term switching applications.

OT413,127 Working Principle

The working principle of the OT413,127, which is based on the principle of an insulated gate thyristor, starts with a forward-biased diode in which current flow causes electrons to be spilled into the region between the diode and the gate, creating an electric field. In the second stage, when a small amount of current is applied to the gate, this electric field is amplified and a current is released, allowing the switch to complete. Therefore, the switch can be used to control current size and direction.

When the switch is completely switched off, the current no longer carries any voltage and the diode turns off, preventing any further current from passing through the switch. This is particularly important in applications where high powered currents must be controlled such as motors, pumps, in electrical equipment, toys and appliances.

Summary

The OT413,127 is a reliable and cost-effective switch for controlling the size of an electric current for applications where extreme temperature conditions are encountered. It has a maximum working voltage of 150V and a maximum current range of 140A to 310A. Furthermore, the working principle is based on the principle of an insulated gate thyristor, which starts with a forward-biased diode in which current flow causes electrons to be spilled into the region between the diode and the gate, creating an electric field.