SZBZX84C12LT3G Discrete Semiconductor Products

Series:	Automotive, AEC-Q101
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	12V
Tolerance:	±5%
Power - Max:	250mW
Impedance (Max) (Zzt):	25 Ohms
Current - Reverse Leakage @ Vr:	100nA @ 8V
Voltage - Forward (Vf) (Max) @ If:	900mV @ 10mA
Operating Temperature:	-65°C ~ 150°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	TO-236-3, SC-59, SOT-23-3
Supplier Device Package:	SOT-23-3 (TO-236)
Base Part Number:	BZX84C12

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Introduction

The SZBZX84C12LT3G is a single Zener diode device used in a variety of applications across the fields of electronics, electrical engineering and telecommunications. It is a voltage stabilizing component for its range of operation, that helps to improve the stability of designs that require the conversion of the direct current (DC) from one value to another. The diode has a high input impedance, meaning that it provides the ability to use the power of the current that flows into it, as well as regulating the AC input to a more stable DC output voltage. This article is meant to provide an overview of the application field and working principles of the SZBZX84C12LT3G diode device.

Functionality

The primary function of the SZBZX84C12LT3G diode is to serve as a voltage regulator, converting AC power to DC and transferring the output current, forming a stable voltage. It can also limit the amplitude of voltage spikes in the circuit, protecting delicate and sensitive components from any unwanted power surges. The voltage stabilizing property of the diode also helps to ensure a more reliable and consistent current output, contributing to the better performance of the overall circuit design.The SZBZX84C12LT3G diode also provides a high input impedance, meaning that it can manipulate the current input associated with the AC power and produce a more reliable, consistent DC output. This effect is useful in applications where a constant, stable voltage output is required, like power supplies and voltage controlled oscillator circuits for example.

Working Principle

The SZBZX84C12LT3G single Zener diode is a protected voltage-controlled silicon diode. This type of diode works on the principle of diode biased junction that works with the electron transport inversely across the junction. When a reverse bias is applied, a current known as the unwanted leakage current flows through the junction. This current increases with increasing reverse bias, but also brings up the reverse breakdown. This is the main principle behind the functioning of the SZBZX84C12LT3G single Zener diode.When the applied voltage across a Zener diode passes a certain threshold, due to the bias applied on it, the holes inside the junction will start to move in the opposite direction of the electric field and the current flowing across the junction increases exponentially. This phenomenon is known as reverse breakdown and the voltage at which the diode enters this state of breakdown is known as the Zener voltage of the diode.

Application Field

The SZBZX84C12LT3G Zener diode device finds its primary use in applications that require a consistent, regulated DC voltage output signal. It can be used in a variety of different applications such as voltage-limiting, over-voltage protection, voltage regulation, low-noise oscillators, battery chargers and portable device power supplies. It can also be used in RS-422 and RS-485 communications systems to protect the data lines from voltage spikes caused by excess noise.In addition, the SZBZX84C12LT3G diode can also be used in other applications such as transducers, detector circuits, feedback circuits and voltage references. It is also used in various timer circuits as a timing element. This diode can withstand a maximum reverse current of 12mA, making it suitable for applications that require heavy reverse current flow.

Conclusion

The SZBZX84C12LT3G single Zener diode device is a useful component for applications that require a constant, stable DC voltage output signal. It works on the principle of reverse breakdown, where the applied voltage passes a certain threshold due to the bias applied on it, resulting in an exponential current flowing across the junction. This provides the ability to regulate the output current, as well as limiting the amplitude of voltage spikes to protect sensitive components. It is used in applications such as voltage limiting, over-voltage protection, voltage regulation, low-noise oscillators and battery chargers.

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