BT137S-800E,118

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Thyristors - TRIACs are widely used as switching elements in various areas of industrial and consumer applications. Among them, BT137S-800E is one of the most widely used TRIACs. This article begins with a brief overview of the application fields of BT137S-800E and a discussion of its working principle.

Application Field

The BT137S-800E is a two-terminal semiconductor device that is widely used in AC power applications. It is a higher performance version of the BT137S type of TRIACs, and due to its greater efficiency, it has become very popular in a variety of applications. Depending on the ratings, it is used in a variety of switching applications such as power switch, AC relays, incandescent and fluorescent dimming, triac motor control, and universal motor speed control. It is also used in temperature controllers, AC power control, temperature limiting applications, home appliances, consumer electronics, and more.

Working Principle

The BT137S-800E works by controlling the flow of current through the device by manipulating the gate connection. When the switched terminals are connected to a power source, a voltage is applied across the main terminals of the device. At this point, it is in the off-state and current cannot flow through the device. However, when the gate is connected to the main terminals, a small current flows through the gate and this creates a voltage across the gate-cathode junction which causes a reverse bias to be applied to the gate-cathode junction. As a result, the gate provides extra current to the main terminals allowing a larger succession of current to flow through the device. This causes the device to turn on, allowing the current to flow through the device.

The BT137S-800E can handle much higher current ratings compared to other TRIAC-type devices due to its higher efficiency. It is also quite reliable and has a long life span compared to other types of TRIACs. Additionally, the device has low on-state and off-state losses and can operate in a variety of temperatures, thus making it ideal for use in industrial applications.

Conclusion

The BT137S-800E is an efficient TRIAC-type semiconductor device that is widely used in industrial, domestic, and commercial applications. It is designed for handling higher current ratings, making it ideal for a variety of applications. Additionally, it has low on-state and off-state losses, making it reliable and long lasting compared to other TRIACs. This is why it is one of the most popular switching elements in the world.

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