BZT52C20-G3-18

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The BZT52C20-G3-18 diode is a low-leakage Zener diode, which is a type of diode designed specifically to allow current to flow in one direction and also in reverse when a threshold voltage level is reached. It is part of the BZT52Cxx series of Zener diodes made by Diodes Incorporated and is designed for general use in various power applications.

Application Field

The BZT52C20-G3-18 is able to handle a peak repetitive reverse voltage up to 7.5V and a maximum reverse leakage current up to 100nA. This allows it to be used widely in a wide range of applications, such as controlling and limiting the maximum voltage of AC or DC circuits, regulating and absorbing voltage spikes, and providing constant DC voltage regulation. It is widely used in AC and DC power electronics, automotive electronics, industrial power supplies, and other power circuit applications.

Working Principle

The working principle of Zener diodes such as the BZT52C20-G3-18 is based on the fact that the voltage drop across a diode is proportional to its current. As the reverse voltage across the diode increases, its current also increases, creating a voltage drop across the diode. When the reverse voltage reaches a certain threshold, the diode becomes reverse-biased and the current stops increasing. This threshold is called the Zener voltage of the diode.

When the Zener voltage is exceeded, the diode allows current to flow in the reverse direction, reducing the excess voltage and providing a regulated output voltage. The reverse current is then limited by the resistance of the load in order to maintain the output voltage at a constant level. The current through the diode is controlled by the output voltage of the circuit, which allows the device to provide stability to the circuit.

Conclusion

The BZT52C20-G3-18 diode is a low-leakage Zener diode that is designed for general use in various power applications. It is able to handle peaks of up to 7.5V of reverse voltage and a maximum of 100nA of reverse leakage current. It is able to control and limit the maximum voltage of AC or DC circuits, regulate and absorb voltage spikes, and provide constant DC voltage regulation. It is widely used in AC and DC power electronics, automotive electronics, industrial power supplies, and other power circuit applications. The working principle of the diode is based on the fact that the voltage drop across a diode is proportional to its current, allowing it to provide a regulated output voltage when a certain threshold is reached.

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