SZBZX84C4V3LT3G

Series:	Automotive, AEC-Q101
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	4.3V
Tolerance:	±6.98%
Power - Max:	250mW
Impedance (Max) (Zzt):	90 Ohms
Current - Reverse Leakage @ Vr:	3µA @ 1V
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)

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Introduction

Single Zener diodes, identified with the part number SZBZX84C4V3LT3G, are diodes that allow current to flow in either direction, but only when the voltage applied to them is higher than the required threshold set by the manufacturer. This threshold value is called the ‘Zener Voltage’ and the rating of the diode is determined by the value of the Zener Voltage. The SZBZX84C4V3LT3G is a 4.3 Volt Zener diode.

Application Field

Single Zener diodes are useful in a wide variety of applications. The most common application for a single Zener diode is in a voltage regulator circuit. In this type of circuit, a Zener diode is used along with a resistor to maintain the output voltage at a constant level, regardless of fluctuations in the load or supply voltage. This type of circuit is often used in electronic devices such as computers, cameras and televisions. Zener diodes are also frequently used in circuit protection applications. In this type of application, the Zener diode provides protection by shorting any voltage spike or overload that is larger than the Zener Voltage to ground. This protects the other components in the circuit from damage due to excessive voltage.Single Zener diodes can also be used in low voltage drop situations where a voltage regulator is not required. In this application, the Zener diode is placed in parallel with the diode so that any current that passes through the Zener diode is restricted by the diode’s Zener Voltage.

Working Principle

A single Zener diode works by allowing current to flow in one direction only when the voltage applied to it is higher than its ‘Zener Voltage’ rating. When the voltage is below the Zener Voltage, the diode acts as an open circuit and no current can pass through it. The Zener Voltage of a single Zener diode is determined by its internal construction and cannot be adjusted.When a current is applied to a Zener diode that is higher than the Zener Voltage, the diode will begin to conduct. As the current increases, the voltage drop across the diode begins to rise until it reaches the Zener Voltage. At this point the voltage across the diode remains constant and the diode acts as a constant voltage source. This allows for the current to pass through the diode and regulate the voltage of a system.

Conclusion

The SZBZX84C4V3LT3G single Zener diode is a 4.3 Volt Zener diode and is used for a variety of purposes. Its most common application is in a voltage regulator circuit, which is used to maintain the output voltage of an electronic device at a constant level, regardless of fluctuations in the load or supply voltage. Additionally, this diode can also be used in circuit protection applications and low voltage drop situations where a voltage regulator is not necessary. The diode works by allowing current to flow in one direction only when the voltage applied to it is higher than its ‘Zener Voltage’ rating, and when the voltage is below this threshold, the diode acts as an open circuit.

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