UG12HT-E3/45

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Diodes play an important role in power management and signal conditioning in many modern electronic circuits. The UG12HT-E3/45 is a single rectifier diode with excellent switching properties that make it suitable for several applications including switching, rectifying, polarity protection, snubbing, and overload protection.

Features

This diode has a maximum reverse voltage of 45V, a maximum forward current of 12A, and a maximum junction temperature of 175°C. Its surge current capability is 400A, and it operates in temperatures that range from -55°C to 175°C. The anode run-in capacitance is 285pF, while its junction capacitance is typically 130pF when reverse biased. The diode also features a surge rating of 3000A.

Applications

UG12HT-E3/45 rectifier diodes are typically used in bridge rectification circuits, including rectifiers for alternating current (AC) power supplies. It is also used for freewheeling and for clamping circuits due to its fast switching speed and low forward voltage drop. It can also be used to protect circuits from short circuits and component overvoltages, as well as to suppress voltage spikes.

Working Principle

Power diodes, such as the UG12HT-E3/45, work by allowing current to flow in one direction while blocking current flow in the reverse direction. They act as a switch to control current direction. When a voltage is applied across the diode, the anode will become more positive than the cathode, allowing electrons to flow freely. This can be used to either direct current (in the case of a polarity protection or rectifying circuit) or to block current (in the case of a snubber circuit).

When the UG12HT-E3/45 is in the \'off\' state, it has a reverse bias, meaning there is higher potential at the anode than at the cathode. This allows it to operate as an open switch and block any current flow. When the diode is put in the \'on\' state, the anode-cathode potential is reversed, allowing current to flow from the anode to the cathode. This turning of the switch is completed by the application of a very small external voltage.

Conclusion

The UG12HT-E3/45 single rectifier diode offers low forward voltage drop and fast switching speed. Its robust feature list makes it a great choice for a range of applications, including bridge rectification, polarity protection, snubbing, clamping and overload protection.

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