GBU408-G

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Diodes - Bridge Rectifiers are rectifying devices used to convert AC voltage to a DC voltage. The GBU408-G is a four-terminal diode bridge rectifier that is specially designed for applications requiring high-voltage and high-current rectification.

The GBU408-G is a four-terminal bridge rectifier with forward voltage from 20 to 800 volts and a peak repetitive reverse voltage of up to 800V. It is designed for use in electronic ballasts, UPS systems, and other high-voltage AC-DC conversion applications. This diode have low distortion, high frequency characteristics and low forward voltage drop.

When AC input is applied to the GBU408-G bridge rectifier, a full-wave rectified output is produced with negative polarity at the anode side of the diode and positive polarity at the cathode side of the diode. That is, when the AC voltage is in the positive half cycle, the anode is connected to the positive terminal and the cathode is connected to the negative terminal, and when it is in the negative half cycle, the anode is connected to the negative terminal and the cathode is connected to the positive terminal. The output of this rectifying bridge accurately follows the AC input waveform and its peak voltage is equal to the peak of the applied AC input voltage.

There are four diodes connected in the bridge; two are connected in a series and two are connected in the parallel. When AC voltage is applied across the bridge, one pair of diode conducts in the positive half cycle and the second pair of diode conducts in the negative half cycle. This allows the current flow from the positive AC input to the negative AC input, creating a full-wave rectifying bridge.

The GBU408-G bridge has a few advantages, such as low voltage drop, low distortion and high frequency operation. Additionally, it offers high surge current capability and high thermal stability which help reduce power losses, protect components and improve performance. Furthermore, the GBU408-G is capable of handling large transient currents and operating temperatures up to 125°C.

In conclusion, the GBU408-G bridge rectifier is a great choice for high-voltage and high-current AC-DC conversion applications due to its superior performance and reliability. It offers low voltage drop and low distortion along with high frequency operation and high surge current capability. It can handle large transient currents and temperatures up to 125°C.

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