1N5991A

Series:	--
Packaging:	Bulk
Part Status:	Active
Voltage - Zener (Nom) (Vz):	4.3V
Tolerance:	±10%
Power - Max:	500mW
Impedance (Max) (Zzt):	90 Ohms
Current - Reverse Leakage @ Vr:	15µA @ 1V
Voltage - Forward (Vf) (Max) @ If:	1.1V @ 200mA
Operating Temperature:	-65°C ~ 175°C
Mounting Type:	Through Hole
Package / Case:	DO-204AH, DO-35, Axial
Supplier Device Package:	DO-35

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Introduction

The 1N5991A is a Zener Diode, specialized for working in voltage regulation circuits. It was designed to help regulate the voltage of power supply systems, and can be used in a wide variety of different applications. This article will look at the 1N5991A\'s application field and working principle.

Application Field

The 1N5991A is designed primarily to be used in regulated power supply circuits. It can help ensure a stable voltage output from the power supply, even in the face of major changes in the input supply. With its low operating and maximum reverse breakdown voltage, it can be used for a variety of electronic applications, including audio amplifiers, motor speed controllers, voltage regulators, and oscillator circuits.

Construction

The 1N5991A is a single Zener diode, and is constructed from a single piece of semiconductor material. It is a standard diode, but with the addition of an impurity doping to create an "abnormal" break down voltage. When the diode is operated in reverse, the Zener voltage will appear when the current reaches a certain point.

Working Principle

When the 1N5991A is connected in a circuit, like with a power supply, it will act as a voltage regulator. This can help ensure a stable output, even in the face of rapidly changing input voltage.When the voltage applied to the 1N5991A\'s anode is higher than the voltage at its cathode, the diode will operate like a normal diode, and allow current to flow. However, if the voltage between the anode and cathode is reversed, the Zener breakdown phenomenon will occur. This will result in a controlled amount of reverse current, and can be used to shunt away excess voltages, thus regulating the output voltage of the power supply.

Conclusion

In summary, the 1N5991A is a Zener Diode designed for power supply circuits. Its construction and working principle make it an excellent choice for regulating output voltages, even in the face of rapid input voltage changes. The wide application field, low operating voltage and maximum breakdown voltage make it a great choice for any electronic circuit.

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