MBRF60020

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Diodes are the most basic type of semiconductor device, used to control the direction of electric current flow and to rectify alternating current. In the context of printed circuit boards (PCBs), diodes are used to protect delicate devices from overvoltage, to provide circuit isolation and even to simplify circuit layout. Among other diode types, rectifier diodes are often used to convert AC to DC. An array of rectifier diodes, such as the MBRF60020 device, offers greater protection, improved efficiency, and the ability to handle higher current loads.

The MBRF60020 is a Schottky barrier rectifier array designed for fast switching, low loss, and high efficiency, for use in power supply, communication, and other products. The dual 4-amp (A) version is available in a TO-220S package, suitable for surface mount. The device is rated for 150A surge current, and can also be operated above and below the rated current levels with minor adjustments to the circuit.

The MBRF60020 rectifier array consists of four individual rectifier diodes in a single package, arranged to form two parallel strings of two diodes in each leg. This reduces the reverse recovery time, since the associated voltage drops of each diode occur at the same time and less total voltage is dropped in the circuit. In DC power supply applications, this reduces the peak-to-peak ripple, resulting in better power supply stability and higher efficiency. The ability to operate over a wide voltage range is an advantage of this device, since it can be used in both low- and high-voltage power supplies.

The working principle of a Schottky barrier rectifier is based on the rectifying action of a P-N junction diode, combined with the low turn-on voltage of a Schottky diode. When a forward current is applied, electrons move from the P side to the N side, creating a P-N junction. This causes a potential barrier to form between the electrodes, blocking the reverse current and allowing the forward current to flow. In the MBRF60020 array, this is achieved with four diodes, which decreases the forward voltage drop, increases the efficiency of the circuit, and improves its surge-current performance.

The MBRF60020 is a useful device for various applications, such as DC-DC converters, uninterruptible power supplies, battery charging, motor drives and more. Its unique design permits the device to operate at higher voltages and currents than conventional rectifier arrays, while providing the same protection. This ensures excellent efficiency and high surge current capability, making the MBRF60020 an ideal choice for most power supply applications.

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