BZT52H-C20,115

Series:	Automotive, AEC-Q101
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	20V
Tolerance:	±5%
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 (TA)
Mounting Type:	Surface Mount
Package / Case:	SOD-123F
Supplier Device Package:	SOD-123F
Base Part Number:	BZT52H-C20

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Introduction

The BZT52H-C20 is a single-diode, zener type component, commonly found in a variety of applications. It is widely available in a range of package sizes and operating power levels, and has become a popular choice for designers looking for a reliable, cost effective way to control a circuit’s voltage. In this article we’ll explore the BZT52H-C20’s application field and its working principle.

Application Fields

The BZT52H-C20 has a wide range of uses, and is commonly used in a variety of applications. For instance, it is used as a voltage regulator in DC/DC converters, where it helps to keep a precise voltage level. Additionally, it is used as a series regulator for controlling battery charges, and is useful for maintaining a consistent charge level in laptop computers. Another common application for the BZT52H-C20 is in laser diode drivers, where it is used to protect the laser diodes from excessive current. It is also popular in motor control systems, where its combined reverse-blocking and voltage-regulation capabilities are essential in preventing a motor from being overloaded or overvoltaged. Finally, the BZT52H-C20 is used as a part of surge protection circuits, providing an alternate path of conduction for unexpected current spikes. This helps to prevent damage to the circuit, and can even enhance the performance of the system.

Working Principle

The BZT52H-C20 is a single-diode, zener type component, which is built using two distinct parts - an anode and a cathode. The anode is connected to the positive terminal of the power source, while the cathode is connected to the negative. When the anode is exposed to a voltage greater than the zener voltage, a breakdown voltage of the diode is reached. This causes current to flow through the diode, allowing the voltage to be regulated to a level very close to the zener voltage. If the anode voltage is further increased, the current will remain at a relatively constant level. The BZT52H-C20 can provide reverse blocking, which prevents a current from flowing from the cathode terminal to the anode in the reverse direction. This reverse blocking ability helps to protect the circuit from unexpected current spikes, and can be used for a range of applications.

Conclusion

The BZT52H-C20 is a single-diode, zener type component that is commonly used in a wide range of applications. It is useful for DC/DC converters, battery chargers, laser diode drivers, motor controls, and surge protection circuits. When exposed to a voltage higher than its zener voltage, it regulates the voltage to a level very close to the zener voltage, and also provides reverse blocking. This makes the BZT52H-C20 an invaluable component for circuit protection.

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