Series:	--
Packaging:	Bulk
Part Status:	Active
Voltage - Zener (Nom) (Vz):	150V
Tolerance:	±5%
Power - Max:	5W
Impedance (Max) (Zzt):	330 Ohms
Current - Reverse Leakage @ Vr:	2µA @ 114V
Operating Temperature:	-55°C ~ 175°C
Mounting Type:	Surface Mount
Package / Case:	SQ-MELF
Supplier Device Package:	--

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Introduction

The 1N4986US refers to a single Zener diode from the family of semiconductor devices called diodes. This diode is specially designed for voltage-regulation and protection applications, and has various working principles depending on the type of diode and the way it is used. This page provides an overview of the 1N4986US’s application field and working principle, as well as some information regarding its specifications.

Application Field and Working Principle of the 1N4986US

The 1N4986US is a single Zener diode, meaning that it has a single pn-junction within the device. It is usually used to provide a stable reference voltage, or a voltage that remains constant despite fluctuations in current and voltage on the other side. This is often used in voltage-stabilizer circuits, as well as for protection against over-voltage and over-load conditions.The working principle of the 1N4986US lies in its ability to allow current to flow in one direction when it is below a certain threshold. This current-regulation is known as the Zener effect, and is the reason why the diode is called a Zener diode. When the voltage reaches this threshold, the diode switches direction, allowing current to flow in the opposite direction, creating a regulated voltage reference. The 1N4986US has a reverse-voltage specification of 57 Volts, meaning that the voltage on the other side of the diode cannot exceed 57 Volts or the diode will be damaged. The diode also has a reverse-current specification of 30mA, the maximum amount of current that can flow through the diode in reverse. Additionally, the 1N4986US has a power dissipation rating of 500mW, meaning it can dissipate up to 500mW of power before it is damaged.

Conclusion

The 1N4986US is a single Zener diode, used mainly for voltage stabilization, protection, and reference voltage applications. It works by allowing current to flow in one direction until a certain threshold is reached. Once the voltage hits this threshold, the diode switches direction and begins to flow current in the reverse direction, thus producing a regulated voltage. The 1N4986US has a reverse-voltage specification of 57 Volts, a reverse-current specification of 30mA, and a power dissipation rating of 500mW.

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