1N2990RB

Series:	--
Packaging:	Bulk
Part Status:	Active
Voltage - Zener (Nom) (Vz):	33V
Tolerance:	±5%
Power - Max:	10W
Impedance (Max) (Zzt):	9 Ohms
Current - Reverse Leakage @ Vr:	10µA @ 25.1V
Voltage - Forward (Vf) (Max) @ If:	1.5V @ 2A
Operating Temperature:	-65°C ~ 175°C
Mounting Type:	Chassis, Stud Mount
Package / Case:	DO-203AA, DO-4, Stud
Supplier Device Package:	DO-213AA
Base Part Number:	1N2990

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

1N2990RB Application Field and Working Principle Introduction The 1N2990RB is a single Zener diode with a wide variety of potential applications. It is designed to yield regulated voltages and perform over-voltage protection. This makes it suitable for uses including power supply rectification, switching regulator feed-back, motor controllers, voltage regulators, and tv sets. The diode is rated for 150 volt and 255mA with a total power dissipation of 200mW.FunctionalityThe Zener diode is a form of voltage regulator that is functional under breaking point conditions. Its main purpose is to keep rectified voltages within a certain range and protect circuits from overvoltage conditions. The 1N2990RB is able to achieve high stability and regulate voltage sources over a wide range of temperatures. The diode\'s inner construction involves a heavier doping of the p-n junction which results in a higher electric field at the breakdown voltage compared to normal junction diodes.MechanismZener diodes are quite unique because they are able to work in both reverse-biased and forward-biased states. When in the reverse-biased state, the electric field lines act towards the anode of the diode instead of away from it, creating a negative electric field at the junction. This facilitates the flow of electrons from the n-type material to the p-type material and vice versa, resulting in a high current flow. In the forward-biased state, the electric field lines act away from the cathode instead of towards it, creating a low electric field at the junction.At the breakdown voltage, the electric field at the junction is high enough for the Zener diode to become effectively conducting. This allows the diode to regulate the voltage at this point. The electric field overshoots the breakdown voltage, resulting in the flow of current through the diode. The electric field then decreases back to the breakdown voltage, which will cause the voltage to remain regulated.AdvantagesThe 1N2990RB Zener diode has a number of unique advantages, such as:

• High stability and accuracy - the 1N2990RB is able to yield regulated voltages over a wide range of temperatures.
• Over-voltage protection - the diode is able to regulate input voltages, protecting equipment from over-voltage conditions.
• Wide variety of applications - the diode can be used effectively in numerous applications, such as rectification, switching regulator feed-back, motor controllers, voltage regulators, and tv sets.

ConclusionThe 1N2990RB is a single Zener diode that is designed to yield regulated voltages and provide over-voltage protection. The diode is rated for 150 volt and 255mA with a total power dissipation of 200mW, and it is capable of yielding accurate and stable results over a wide range of temperatures. Additionally, the 1N2990RB has many potential applications, making it an excellent choice for everything from rectification to motor controllers.

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

Part Number	Manufacturer	Price	Quantity	Description