BT168G,112

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Thyristors - SCRs

The BT168G,112 is a silicon-controlled rectifier, commonly referred to as an SCR. It is a type of thyristor, which is a four-layer, three-terminal semiconductor device. The BT168G,112 is a medium-power SCR with a forward-biased V-I curve that appears to be a diode. The BT168G,112 is relatively easy to control by the gate current, and it can withstand high levels of forward and reverse current. The gate of the BT168G,112 is a semiconductor gate whose voltage can be used to control the current that flows through the device.

Application Fields

The BT168G,112 is designed for medium power signal applications, such as AC motor control, long cable transmission, switching systems, and reversing motor drives. It is also suitable for applications where the device should be able to withstand relatively high power levels and long cable runs. These applications may include welding machines, motor starter systems, motor controllers, audio amplifiers, and solar energy systems.

Features

The BT168G,112 is a medium-power SCR with a high voltagemax featuring an avalanche rating of 5 Ampere peak repetitive offstate voltage up to 900 volts and an on-state current carrying capability up to 10 Amperes at 25°C case temperature. It can withstand relatively high amounts of pulse and reverse current. It also has a wide operating temperature range from -40°C to 125°C.

Working principle

The BT168G,112 works on the principle of voltage control. This means that an input signal to the gate can either stop or start the flow of current through the device, depending upon its polarity. The voltage input to the gate also determines how much current can pass through the device. The voltage control also means that the device can be switched on and off, controlled by the gate, which makes it ideal for application in systems requiring manual control or automation. The BT168G,112 is also capable of withstanding high levels of pulsed current, and has an avalanche energy rating of 4 mJ.

Safety Considerations

As with any thyristor device, the BT168G,112 must be handled with precaution, especially in terms of installation and operation. The insulation of the device must be adequate for the highest voltage that exists in the application. All connections should be checked for tightness. The BT168G,112 should always be tested before use to make sure it is working properly. It is also important to select a suitable heatsink for the device to help dissipate any excess heat generated during operation.

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