BZX84C3V9-TP

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	3.9V
Tolerance:	±5%
Power - Max:	350mW
Impedance (Max) (Zzt):	90 Ohms
Current - Reverse Leakage @ Vr:	3µA @ 1V
Voltage - Forward (Vf) (Max) @ If:	900mV @ 10mA
Operating Temperature:	-55°C ~ 150°C
Mounting Type:	Surface Mount
Package / Case:	TO-236-3, SC-59, SOT-23-3
Supplier Device Package:	SOT-23
Base Part Number:	BZX84C3V9

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BZX84C3V9-TP application field and working principle

Introduction

BZX84C3V9-TP is a highly efficient single Zener diode, specifically designed for use in ac/dc and dc/dc applications. This diode is ideal for use in a variety of different applications including high switching power supplies, motor drive applications, and lighting control systems. It features a low thermal resistance, high voltage capability, and a low threshold voltage making it an ideal choice for a wide range of applications.

Application Field

BZX84C3V9-TP is well suited for use in a wide range of applications due to its low thermal resistance, high voltage capability, and low threshold voltage. It is particularly useful in the control and regulation of ac/dc and dc/dc systems. It is also suitable for use in motor drive applications due to its stability and low jitter. In addition, its high voltage capability makes it an ideal choice for use in lighting control systems as it can provide high linearity and stability when controlling the light source.

Working Principle

The BZX84C3V9-TP is a single Zener diode, meaning it is composed of just one semiconductor layer. This diode works by taking advantage of its semiconductor material, which can be switched to create a barrier that will allow current to only flow in one direction.When a voltage is applied across the diode, the current flowing through the device is limited to the value determined by the Zener Voltage. This voltage, known as the Zener Voltage (Vz), is the minimum amount of reverse bias voltage needed to cause current to flow in the opposite direction. In this mode, the diode acts as a voltage regulator as the output voltage remains relatively stable regardless of fluctuations in the input voltage.The Zener Breakdown Effect occurs when the diode is exposed to a voltage above its Zener Voltage. This causes the diode to break down and a current starts to flow in the opposite direction, taking the form of an avalanche current. This current is managed and regulated by the control circuit of the device and is used to control the output voltage of the system.

Conclusion

In conclusion, the BZX84C3V9-TP is a highly efficient single Zener diode that is ideal for use in ac/dc and dc/dc applications. It features a low thermal resistance, high voltage capability, and low threshold voltage making it an ideal choice for a wide range of applications. Its primary mode of operation is based on the Zener Breakdown Effect, where the output voltage remains relatively stable regardless of fluctuations in the input voltage. This diode is suitable for use in motor drive applications due to its low thermal resistance and low jitter, as well as in lighting control systems due to its high voltage capability.

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