PB4008-E3/45

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Diodes - Bridge Rectifiers

PB4008-E3/45 is a double-phase bridge rectifier, specifically designed for applications that require low forward voltage drops and high surge forward currents such as power supplies, chargers, inverters, and the like. It is one of the most commonly used types of bridge rectifier due to its characteristics of being able to operate at high temperature and to rectify large amounts of current with low voltage drops.

Application field

PB4008-E3/45 is primarily intended to be used in applications such as power supplies, chargers, inverters, and other similar applications that require low forward voltage drops and high surge forward current rectification. It is highly resistant to high temperature and constructed with high current capability. It can handle current range up to 40A peak, 25A continuous.

Working Principle

The working principle of a bridge rectifier

A bridge rectifier contains two sets of diodes connected in a four-terminal network. The two sets of diodes are wired in parallel across the input line voltage. At each sixty-degree phase angle of the AC input, the diodes are in the reverse-biased portion of their characteristic curves. This means that current flow is prevented, and no current is drawn from the AC input. At each consecutive zero-crossing of the AC input voltage, one of the two sets of diodes is forward biased, allowing current to flow in the positive direction throughout the loop of the bridge.

This current flow from the AC input to the load is the result of the turning on of the diodes connected in the reverse direction. As the AC input voltage begins to reverse each half cycle, the forward direction diodes become reverse biased and the current flow from the input to the load is blocked. This results in a uni-directional out put voltage.

The bridge configuration of the PB4008-E3/45 allows for high efficiencies at very low losses. The device also has a low forward voltage drop, and is able to rectify large amounts of current with high reliability and low thermal resistance.

Conclusion

PB4008-E3/45 is a double-phase bridge rectifier, specifically designed for applications that require low forward voltage drops and high surge forward currents. It is primarily intended to be used in applications such as power supplies, chargers, inverters, and other similar applications. The working principle of the PB4008-E3/45 is based on two sets of diodes connected in a four-terminal network. This allows for high efficiencies at very low losses, low forward voltage drop, and the ability to rectify large amounts of current with high reliability and low thermal resistance.

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