CDSH3-70-G

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CDSH3-70-G Application Field and Working Principle

The CDSH3-70-G rectifier diode array is a three phase bridge rectifier designed for telecom, industrial and consumer applications. It is capable of providing both single-phase and three-phase rectification and is particularly well-suited for providing low-cost starting power for alternating-current (AC) motor drives. Compared to traditional single-phase rectifiers, three-phase bridge rectifiers offer improved power efficiency and better power factor, making them well-suited for use in medium to large applications.

As its name implies, the CDSH3-70-G consists of three sets of dual diodes arranged in a three-phase bridge rectifier configuration. Each diode is rated for a maximum rectified current of 70A and maximum reverse voltage of 700V. The CDSH3-70-G also features capacitive snubber circuitry to protect the diodes from surges or transients. It is offered in a surface-mount TO-220 package and is RoHS compliant.

The CDSH3-70-G rectifier diode array serves two primary functions: rectification and snubber protection. When alternating current flows through the device, its diodes are forward-biased and conduct, allowing the current to flow in one direction only. This converts the AC input into a DC output with a pulsed waveform. The rectified voltage is then smoothed by the diodes\' internal capacitive snubbers, which reduce its ripple content. This inherent ripple reduction eliminates the need for external smoothing capacitors, making the CDSH3-70-G an ideal choice for applications requiring a pure DC output.

Applications

The CDSH3-70-G rectifier diode array is ideally suited for medium to high-power applications requiring efficient conversion from AC to DC power. It is particularly well-suited for applications such as AC motor drives, DC servo motors, and other industrial automation equipment. It also finds use in power supplies for telecom equipment, as well as lighting and consumer electronics applications. In addition, the CDSH3-70-G\'s inherently low ripple output makes it an excellent choice for applications requiring a pure DC output.

Advantages

The CDSH3-70-G rectifier diode array offers several advantages compared to traditional single-phase rectifiers. First, its three-phase design offers improved power efficiency and better power factor than single-phase rectifiers. Second, its inherent capacitive snubbing reduces ripple, eliminating the need for external capacitors. Third, its TO-220 package provides excellent thermal performance, allowing it to operate with higher currents than other rectifier diode packages.

Conclusion

The CDSH3-70-G rectifier diode array is a cost-effective and efficient solution for converting AC power into DC power for medium to high-power applications. Its three-phase design offers improved power efficiency, better power factor and reduced ripple output compared to traditional single-phase rectifiers. In addition, its surface-mount TO-220 package provides excellent thermal performance, allowing it to operate with higher currents. The CDSH3-70-G is an ideal choice for applications requiring efficient and reliable AC to DC power conversion.

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