SBR4045CT

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SBR4045CT Application Field and Working Principle

The SBR4045CT is a silicon diffused rectifier array composed of 4 separate rectifier diodes in a single package. It’s intended use is to rectify AC voltage to produce DC power, while providing an ESD protection capability. It is composed of 4 discrete rectifiers in a single package with a total power dissipation of 120 W.

The SBR4045CT has a variety of applications including power supply circuits such as switching power supplies, audio and TVs, battery charters, electromagnetic relays, and automotive supplies. It is also well suited for automated equipment power supplies and commercial electronic products.

The working principle of the SBR4045CT is fairly simple and straightforward. When AC power is applied, the bridge rectifier will convert the AC into a pulsed DC, which then is increased with a capacitor-inductor filter to a smooth DC. To explain the principle in more detail, let’s consider a diode bridge rectifier circuitry:

There are two pairs of diodes, each consisting of two series connected diodes, connected to the two AC input terminals (left & right). This arrangement is known as a full-wave bridge rectification. When the AC voltage is applied, one pair of diodes will conduct while the other pair remain reverse biased. This recurs, in alternate cycles of each pair conducting, as the voltage changes from positive to negative, allowing both halves of the incoming AC cycle to be rectified. The rectified output is then smoothed with a filter such as a capacitor-inductor filter, which would filter out any ripples in the voltage.

In summary, the SBR4045CT is a four diode rectifier array that can be used for a wide range of applications. It is a useful tool in converting AC to DC and offer a good ESD protection. The working principle of the device is fairly simple, as is the application of it.

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