BU20105S-M3/45

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Diodes are one of the most used devices in electronics and bridge rectifiers are the basic needed form of that. Bridge rectifiers are named so since they are used to rectify signals where alternating current changes its direction. The BU20105S-M3/45 is a three phase single phase EMC-compliant bridge rectifier. With a power of up to 25W, this rectifier is ideal for applications that require high-current-capacity bridge rectifiers.

BU20105S-M3/45 Application Fields

The BU20105S-M3/45 series bridge rectifier are designed to be used in DC motors, power switching systems, transformers, automotive and industrial mains, power supplies, heating element control, and power semiconductor or optoelectronic application. Built with an innovative epoxy mold case, the BU20105S-M3/45 series Bridge Rectifier is able to protect mechanically fragile components and ensure the best conditions for operation. In addition, its integrated connectivity and 40A current-carrying capacity make these rectifiers suitable for powering demanding systems and machinery, such as process controls and automated production processes.

Working Principle of BU20105S-M3/45

The BU20105S-M3/45 is a three-phase single-phase EMC-compliant bridge rectifier that has a peak forward surge current of 300A, a maximum reverse voltage of 720V and a maximum forward voltage of 800V. It works by a principle known as the bridge rectification. This is the conversion of an alternating voltage signal into direct voltage signal. In this case, the bridge rectifier uses the effect of diodes to change the alternating current into direct current. In other words, the BU20105S-M3/45 is a rectifier that can take an AC signal and convert it to DC. The AC signal serves as input and DC signal serves as output.

When the input signal is applied, the diode D1 allows some part of it to pass through the bridge rectifier and gets stored in the output capacitor C. This causes a voltage drop in the diode D2 and D4, leading them to turn on. The remaining half of the input voltage then passes through the on-state diodes D2 and D4 and gets stored in the capacitor, again causing a voltage drop in the diodes D1 and D3. This process continues as long as any input voltage is applied.

Once the capacitor is filled up, the remainder of the input signal passes directly across the bridge rectifier, but at a reduced level. This stepping-down process is known as the voltage multiplying action of the bridge rectifier. In addition to this, the BU20105S-M3/45 is designed to minimize the distribution of the voltage across the load. This is done by regulating the current flow in the bridge rectifier.

Conclusion

The BU20105S-M3/45 bridge rectifier is an ideal choice for applications where high current-capacity bridge rectifiers are required. It is able to provide a highly efficient rectification process and regulates the current flow. It is also a great option for powering demanding systems and machinery like process controls and automated production processes. With its 38A current-carrying capacity, 85°C/100°C ambient temperature and integrated connectivity, the BU20105S-M3/45 is the perfect choice for high-power applications.

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