MTZJT-773.9B

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Diodes Zener Single, MTZJT-773.9B, is a voltage-controlled unidirectional semiconductor device utilized as a voltage reference. It is designed to operate when a current is passed through it, with the voltage remaining reasonably constant over a wide range of current, allowing it to act as a voltage regulator or voltage overload protection device. This diodes function as a simple rectifier when the PN junction within it becomes forward biased, meaning that when a voltage is applied to it the current only flows one direction and therefore the voltage is limited to a set amount.

MTZJT-773.9B has many different application fields. These include power supplies, precision voltage regulation, motor control circuitry, wave-shaping circuits, AC/DC converters, peak clippers, rectifiers, and voltage clamping. With their balanced dynamic and static characteristics, they can also be used in over-voltage protections and other similar applications.

The working principle of PC-773.9B is as follows. When the PN junction of the diode becomes forward biased, a current starts flowing from its anode to its cathode. The potential of the anode is higher than that of the cathode, and since the forward voltage drop of the diode is quite low (roughly 0.7V), the voltage across the diode remains relatively constant. The amount of current that the diode is able to regulate is referred to as its “zener” current.

When under zener voltage (Vz), current through the diode starts increasing linearly, eventually reaching the maximum Vz. This “zener knee” refers to the fact that when this voltage level is reached, the voltage across the diode starts to increase along with the current, and the characteristics become more resistive. When the current is in this range, the diode serves as a voltage regulator.

When the current through the diode is lower than the Vz, the behavior changes, and the current becomes a characteristic of the load impedance. This is because the voltage across the diode remains constant while the current is a direct response of the load impedance. The lower the impedance, the higher the current.

The MTZJT-773.9B diode also acts as an overload protector. When the current flowing through the diode becomes higher than Vz, the diode acts as a switch, limiting the amount of current that flows into the circuit. The diode is also capable of peak clipper, voltage clamping, and wave-shaping capabilities.

In conclusion, MTZJT-773.9B is an ideal choice for power supplies, motor control circuits, wave-shaping circuits, AC/DC converters, peak clippers, rectifiersand voltage clamping applications. Its wide dynamic and static characteristics make it suitable as a voltage regulator or overload protector. Its working principle is based on the biasing of the PN junction, resulting in a linear current through the diode before reaching a “zener knee”, and then increasing resistively afterwards.

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