MURT30020R

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MURT30020R Application Field and Working Principle

Diodes - rectifiers - arrays are one of the most familiar electrical components in the field of electronics. The MURT30020R, a three-terminal, 20A surface mount rectifier array with a low forward voltage drop, is one such component. Its application range is broad and its design is used in a variety of areas from cell phone batteries to power supplies used in laptop computers and in fluorescent lighting systems. It is also used for motor vehicle ignition systems, electric vehicles and voltage converters.

Design

The MURT30020R contains two independent rectifier arrays, each with two anode and two cathode terminals. The two center pins of the device are electrically isolated from each other and function as a single device. The one-piece package is designed with an epoxy molding compound that completely encapsulates the chip, providing better thermal and mechanical protection.

Working Principle

The MURT30020R utilizes two anode and two cathode terminals to conduct a current between them. The two outer terminals, the anodes, are connected to the electric source and the middle terminals, the cathodes, are connected to the load. When the electrical source is connected to the direct current (DC) power, the device is also reverse-polarized with the anode connected to the negative polarity and the cathode connected to the positive polarity. Within the diode array, each individual diode will allow the current to flow in one direction.

The built-in protection of the device is an internal inverse-conducting current blocking state. This means that when the current flow reaches a certain level, the device trips the internal protective driver and shuts itself down. This helps protect the device from overloads and damages that could result from a higher-than-acceptable inrush current.

Power Capability

The MURT30020R is capable of withstanding reverse voltages up to 250V, and current up to 20A. The forward voltage drop of the device is low, typically 0.32V at 15A. The device is also capable of operating at higher temperature ranges, up to 125°C without derating.

Uses in Electronic Design

The MURT30020R is used in a variety of electronic designs, from cell phone lithium ion batteries to power supplies used in laptop computers and in fluorescent lighting systems. In addition, the device is employed in motor vehicle ignition systems, automobiles, electric vehicles and voltage converters.

The 20A device is also found in computer motherboards, power circuitry, computers and servers. The minimal forward voltage drop of 0.32V enables the device to be used in applications with very little voltage drop across the load, making it a highly efficient choice.

Conclusion

The MURT30020R is a three-terminal, surface-mount rectifier array capable of withstanding reverse voltages up to 250V and handling current loads of up to 20A, making it a useful component in a range of electronic designs. Its low forward voltage drop of 0.32V at 15A makes it an efficient choice for applications where a low voltage drop across the load is desired. Its epoxy molding compound provides good thermal and mechanical protection, while its internal inverse-conducting current blocking state helps protect the device from overloads and damages that could be caused by excessive inrush current.

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