Series:	Automotive, AEC-Q101
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	20V
Tolerance:	±6%
Power - Max:	375mW
Impedance (Max) (Zzt):	20 Ohms
Current - Reverse Leakage @ Vr:	50nA @ 14V
Voltage - Forward (Vf) (Max) @ If:	900mV @ 10mA
Operating Temperature:	-65°C ~ 150°C
Mounting Type:	Surface Mount
Package / Case:	SOD-123F
Supplier Device Package:	SOD-123F

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introduction

The BZT52HC20WF-7 Single Zener Diodes, which is a high conductance and low capacitance, is capable of controlling or limiting the voltage at a required level. A small current flow through its terminals creates a low voltage drop, which are powerful and economical voltage stabilizers, maintaining a consistent voltage level in its output range. Its electron barrier layer makes it exceptional in suppressing its reverse current leakage, therefore allowing it to be used as a series or parallel component in many device applications.

Application field

The BZT52HC20WF-7 Single Zener Diodes are widely used in voltage stabilizers, voltage regulators, transient suppression circuits, transformer rectifiers, isolation devices, voltage limiting circuits, or any other device that requires constant and consistent output voltage. They are used to control or limit the voltage in power supply circuits, motor circuits, and even automotive applications. Additionally, they are suited for low voltage and fast switching applications.

Work mechanism

As under forward bias, a small amount of electron current will flow through the junction, as a consequence, electrons generated in the emitter can combine with the rest of the holes in the reverse direction. These recombined electrons are then collected in the collector, which results in a reverse current in the diode. During breakdown, the electrons will be accelerated and gain enough energy to create a large reverse current. This current then leads to a sudden drop in the voltage across the junction, allowing it to be used as a voltage stabilizer.The Zener voltage is determined by the current that passes through the diode, which is usually set with a predetermined value. When the reverse voltage is applied on the diode, the protective layer will start to conduct, which allows the voltage to be adjusted or stabilized from the predetermined value. The diode can then be used as a constant-voltage stabilizer, as long as the current passing through it is controlled to maintain a constant voltage output.

Conclusion

The BZT52HC20WF-7 Single Zener Diodes are widely used in many different device applications due to its low reverse current leakage, low capacitance, and high conductance. It is an excellent tool for providing a consistent voltage output and is especially suitable for low voltage and fast switching applications. This diode can be used to create a constant and consistent voltage regulator, making it a great choice for transformer rectifiers, voltage stabilizers, voltage limiting circuits, transient suppression circuits, and more.

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