BZX84B3V3-G3-18

Series:	Automotive, AEC-Q101
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	3.3V
Tolerance:	±2%
Power - Max:	300mW
Impedance (Max) (Zzt):	95 Ohms
Current - Reverse Leakage @ Vr:	5µA @ 1V
Operating Temperature:	-55°C ~ 150°C
Mounting Type:	Surface Mount
Package / Case:	TO-236-3, SC-59, SOT-23-3
Supplier Device Package:	SOT-23-3

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Diodes - Zener - Single
BZX84B3V3-G3-18 is a single zener diode which is a semiconductor device used as a voltage regulator by allowing current to flow in one direction and preventing it in the opposite direction. It does so by acting like a one-way valve for electricity.The main and most important application of BZX84B3V3-G3-18 is as a voltage regulator, especially for microprocessors and other integrated circuits. It is meant to stabalize the voltage and suppress the transient over-voltage. BZX84B3V3-G3-18 zener diodes have been used in the past to aid in the self-regulating of the power supplies.The working principle of the BZX84B3V3-G3-18 is quite simple and elegant. It utilizes the fact that the voltage across a diode is exponential with respect to the current. Therefore, if a zener diode is connected in reverse bias, at a certain reverse bias voltage, the zener diode will breakdown and starts to conduct current. This breakdown voltage is called the zener voltage of the diode and remains the same over a wide range of currents.This is the main advantage of the BZX84B3V3-G3-18. It provides a very stable, constant voltage for a wide range of currents. This means that it is able to regulate an input of varying voltages and produce a constant voltage from it. The BZX84B3V3-G3-18 is also known for its ability to absorb energy from ESD and RFI which makes it an effective tool for suppressing these two transients.In addition to voltage regulation and transient suppression, the BZX84B3V3-G3-18 is also a popular choice for accurate protection against over-voltage. Due to its controlled breakdown voltage, it can act as a voltage limiter, preventing voltages from going beyond a certain set limit as determined by the zener voltage of the diode. Furthermore, the fact that the zener voltage is incredibly stable, it makes it ideal for more precise measurement of voltages as well.The BZX84B3V3-G3-18 is also used in many other applications such as in series circuits for noise suppression, in oscillators for frequency stabilization and in bridge rectifiers for smoothing the AC voltage waveform.All in all, the BZX84B3V3-G3-18 is a very versatile and important component of circuit design. Its ability to regulate, suppress and measure voltage makes it an essential component for modern electronics. Its wide range of applications and dependable performance make it one of the most sought after components for voltage regulation in the industry.

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