1N4990

Series:	--
Packaging:	Bulk
Part Status:	Active
Voltage - Zener (Nom) (Vz):	220V
Tolerance:	±5%
Power - Max:	5W
Impedance (Max) (Zzt):	550 Ohms
Current - Reverse Leakage @ Vr:	2µA @ 167V
Operating Temperature:	-55°C ~ 175°C
Mounting Type:	Through Hole
Package / Case:	Axial
Supplier Device Package:	Axial

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The 1N4990 is a single Zener diode that is widely used for a variety of applications. This diode provides a reverse breakdown voltage of 5.6V and is typically used in the following applications: bypass, voltage clamping and voltage regulation. It is also used in switching circuits and in surge suppression. To understand the working principle of the 1N4990, it is important to first understand what a Zener diode is and how it operates. A Zener diode is a type of diode that is designed to operate in both the forward and reverse directions. In the forward direction, it acts like a normal diode and allows current to flow. In the reverse direction, it acts as a voltage regulator by limiting the amount of voltage that is present. The voltage at which the diode begins to conduct in the reverse direction is known as the Zener voltage. The 1N4990 has a Zener voltage of 5.6V. When the 1N4990 is used in the forward direction, it behaves like a normal diode and current passes freely. When the diode is placed in the reverse direction, however, it acts as a voltage regulator. A Zener diode works by limiting the amount of voltage that is present to the Zener voltage. In the case of the 1N4990, it is 5.6V. The current that passes through the diode is limited by the forward resistance of the diode. When the 1N4990 is used for bypassing, it is placed in parallel with other components. This is done to reduce voltage across the circuit. The current in this case is limited by the Zener voltage. When the 1N4990 is used for voltage clamping, it helps to protect components from excessive voltages. This is done by limiting the voltage present. The current is limited by the Zener voltage of the diode. The 1N4990 is also used in voltage regulation applications. In this case, it is placed in series with other components. This is done to maintain a constant voltage in a circuit. The voltage is limited by the Zener voltage of the diode. The 1N4990 is also used in surge suppression applications. In this case, it acts as a fail-safe by protecting components from any sudden spikes in voltage. The current in this case is limited by the Zener voltage of the diode. In conclusion, the 1N4990 is a single Zener diode that can be used for a variety of applications. It provides a reverse breakdown voltage of 5.6V and is widely used for bypassing, voltage clamping, voltage regulation, and surge suppression. It works by limiting the amount of voltage present to the Zener voltage of the diode.

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description