1N3308B

Series:	--
Packaging:	Bulk
Part Status:	Active
Voltage - Zener (Nom) (Vz):	9.1V
Tolerance:	±5%
Power - Max:	50W
Impedance (Max) (Zzt):	0.5 Ohms
Current - Reverse Leakage @ Vr:	25µA @ 6.1V
Voltage - Forward (Vf) (Max) @ If:	1.5V @ 10A
Operating Temperature:	-65°C ~ 175°C
Mounting Type:	Chassis, Stud Mount
Package / Case:	DO-203AB, DO-5, Stud
Supplier Device Package:	DO-5
Base Part Number:	1N3308

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Introduction

The 1N3308B is a single zener diode used for a variety of applications, from discretes to power supplies. Unlike its predecessor, the 1N5076, the 1N3308B is larger in size and provides better performance than the 1N5076. It has a peak reverse voltage of 31V, making it the ideal choice for applications where a much higher voltage is necessary. The 1N3308B has a maximum reverse power rating of 4 watts, allowing it to be used in many different applications.

Application Field

The 1N3308B is used in a variety of applications. It is most often used as a voltage reference in power supplies, allowing the circuit to accurately maintain a certain voltage regardless of changes in load. It can also be used in reverse current protection circuits to protect against power surges. Additionally, the 1N3308B is commonly used in temperature control systems, LED indicators, and circuit testers.

Working Principle

The working principle of the 1N3308B is based on the use of a positive-feedback loop, where current is fed back into the circuit to maintain a certain voltage. The voltage reference is set by the zener diode, which will not let the voltage go above a certain point. The circuit is made up of two essential components; the zener diode and a resistor. The resistor is used to limit the amount of current flowing in the circuit, while the zener diode is used to prevent the voltage from going too high. When the voltage in the circuit increases, the zener diode starts to conduct, allowing current to flow back into the circuit, thus maintaining the desired voltage. Conversely, when the voltage drops, the zener diode is effectively shorted, preventing current from flowing back into the circuit. In this way, the 1N3308B is able to maintain a steady voltage level regardless of changes in load.

Conclusion

The 1N3308B is a single zener diode that is used in a wide range of applications. It provides better performance than its predecessor, the 1N5076, and can handle higher voltages. It is designed to maintain a certain voltage within a circuit using a positive-feedback loop, and can be used in power supplies, reverse current protection circuits, temperature control systems, LED indicators, and circuit testers.

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