MUR120G

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MUR120G is a fast switching of 1200V, high-performance rectifier diodes which offer low power dissipation. This device is designed to act as a shunt regulator, providing a high-voltage path to divert over-voltage conduction. It has low reverse leakage properties and is superior to standard silicon diode rectifiers due to its faster switching speeds. Many applications benefit from the fast switching capabilities, including protection circuits, inverter phase control circuits, lighting ballast controls, and over-current protection, among others.

The MUR120G is packaged in an industry-standard TO-220 Dual Diode package which requires no additional manufacturer-specified mounting. It consists of two individual diodes with a common cathode connection. Each diode has anemitter and a collector, where the anode connection of one diode and the cathode connection of the other comprise the common cathode connection. Under normal usage, one diode will conduct current while the other remains reverse-biased.

The operating principle of the MUR120G is relatively simple. When the anode of a diode is connected to the positive voltage rail and the emitter to the negative voltage rail, the diode is forward-biased. This allows current to flow from the anode to the emitter, generating a voltage drop across the diode. This voltage drop is the voltage which is effectively “clipped” and limited by the diode. When the anode is connected to the negative voltage rail and the emitter to the positive voltage rail, the diode is reverse-biased. This prevents the characteristic current from flowing, allowing the device to act as a shunt regulator.

The MUR120G is ideal for applications requiring high-speed switching and over-voltage protection. These diodes are also ideal for use in motor control circuits, switching power supplies, and in converters and inverters. The devices feature low reverse leakage current, low forward voltage drop, high reverse voltage breakdown, and fast switching speed. They are also relatively inexpensive and easy to integrate into existing designs. As a result, the MUR120G makes an ideal choice for applications requiring fast switching and over-voltage protection.

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