BZT52-B33X

Series:	Automotive, AEC-Q101
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	33V
Tolerance:	±2.12%
Power - Max:	590mW
Impedance (Max) (Zzt):	40 Ohms
Current - Reverse Leakage @ Vr:	50nA @ 23.1V
Voltage - Forward (Vf) (Max) @ If:	900mV @ 10mA
Operating Temperature:	-55°C ~ 150°C (TA)
Mounting Type:	Surface Mount
Package / Case:	SOD-123
Supplier Device Package:	SOD-123

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Diodes - Zener - Single: BZT52-B33X Application Field and Working Principle

The BZT52-B33X diode (also known as Zener diode) is a type of diode utilised in many electronics applications, including voltage regulation and surge protection. This article provides an overview of the BZT52-B33X diode’s application field and working principle.

What is a Zener Diode?

A Zener diode is a type of diode that is specially designed to operate in reverse breakdown. It works on the principle of zener breakdown, where the zener voltage is reached when a certain reverse bias is applied to the diode junction. This reverse bias will cause the diode’s junction to break down and allow current to flow. The Zener diode allows a controlled amount of current flow when the applied voltage is above the reverse breakdown voltage.

Application Field of BZT52-B33X Diode

The BZT52-B33X diode is a widely utilised device due to its versatility and wide range of applications. It is commonly used in voltage regulation and surge protection. It is also used in power supplies, linear regulators, audio amplifiers, over-voltage protection and many other applications that require a steady DC voltage.

Working Principle of BZT52-B33X Diode

The BZT52-B33X diode works on the principle of reverse breakdown. When a higher reverse voltage is applied to the diode, its junction will break down and allow current to flow. The zener voltage of the diode determines the steady reverse voltage of the diode. The current will start flowing when the applied voltage is above the zener voltage.When the diode is used in voltage regulation, a resistor is connected in series with the diode. This will limit the zener current flowing through the diode. In order to maintain a steady voltage across the diode, the applied voltage must always be higher than the zener voltage of the diode. When the applied voltage is greater than the reverse breakdown voltage, the current will increase, causing a decrease of the voltage drop across the diode, thus maintaining a constant voltage across the diode.In order to regulate the voltage across the diode, another resistor can be placed in parallel with the diode. This will limit the current through the diode, thus allowing the circuit to be switched on and off. For example, when the voltage is too high, the resistor will reduce the current, switching the circuit off.

Conclusion

The BZT52-B33X diode is a versatile device with a wide range of applications, mainly in voltage regulation and surge protection. It works on the principle of reverse breakdown, where the current will start flowing when the applied voltage is above the zener voltage of the diode. Resistor networks can be used to limit and control the current, allowing the device to be used for voltage and current regulation.

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