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Diodes - Rectifiers - Arrays - MBRB25H45CTHE3/81 Application Field and Working Principle

The MBRB25H45CTHE3/81 is a type of three-phase diode rectifier, commonly known as a Diode Array. It\'s a high-power rectifier module, packed fully in an isolated stainless steel case. It limits the current across the rectified circuit, making it suitable for use at different frequencies and voltages. This diode rectifier array can work as a bridge rectifier, withstanding currents up to 25 A and safe operation voltages up to 450 V. Proper heatsinking is required to deliver the specified power level of 125 W.

Working Principle

The MBRB25H45CTHE3/81 rectifier uses Schottky diodes, which are designed to produce a reverse voltage and uses forward bias to operate. As the diode is forward biased, it allows current to move from the anode to the cathode. In a Diode Array, the diodes are arranged in a three-phase configuration, with the anode and cathode connected respectively to each of the three AC supply lines.

When the anode is positive and the cathode is negative, the diode will allow current to flow from the positive line to the negative line to complete the cycle. This process will repeat for each of the three phases until the AC supply is removed.

Application Field

Due to its high power rating, the MBRB25H45CTHE3/81 has a wide range of applications. Some of these include motor drives, power supplies, UPS systems, solar inverters, electric vehicle charging stations and so on.

It is mainly used in AC/DC power supply systems, such as AC/DC adapters, laptop power adapters and other DC input-based power supply systems. It is also used in LED systems and LED lighting, such as LED streetlights, LED light bars and LED floodlights.

The MBRB25H45CTHE3/81 is ideal for use in solar applications, such as solar photovoltaic panels, solar cells and solar charge controllers. It is also used in telecom and networking applications, such as base station power supplies, network switches and routers, as well as medical and industrial power supplies.

Conclusion

In conclusion, the MBRB25H45CTHE3/81 is a Diode Array, which is a three-phase rectifier commonly used in AC/DC power supply systems, and in a variety of applications, including motor drives, power supplies, UPS systems, solar inverters, and electric vehicle charging stations. The diode array has a high power rating, making it suitable for use at different frequencies and voltages. Proper heatsinking is required to deliver the specified power level of 125 W.

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