1N3308A

Series:	--
Packaging:	Bulk
Part Status:	Active
Voltage - Zener (Nom) (Vz):	9.1V
Tolerance:	±10%
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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1N3308A Applications and Working Principles

The 1N3308A is a single Zener diode, used mainly in DC stabilizing, voltage regulating, and peak rectifying applications. It is designed to provide reliable and stable voltage over a wide temperature range. In addition, it is tolerant of transient voltage surges and has superior reverse leakage characteristics.

Key Characteristics

The 1N3308A has following key characteristics:• Breakdown voltage (Vz) of 3.3V • Power dissipation rating of 125mW (at a case temperature of 25˚C) • Junction capacitance (Cj) of 0.4pF • Maximum reverse current (Iz) of 1µA • Operating temperature range from -55˚C to +125˚C • High surge current capability • UL 94-V-0 compliant

General Description

The 1N3308A diode, a single Zeners, is a signal and switching diode, also known as a Zener breakdown diode. It is designed to provide a precise voltage when voltage is applied to its terminals in the reverse direction. This works by using the Zener breakdown phenomenon, which occurs when a high enough reverse voltage is applied to a junction. This results in a large current flowing through the junction, which is then regulated to a smaller value.The 1N3308A diode can be used in a variety of applications such as protection from high voltage transients, protection from overvoltage, and as a voltage regulator. The diode typically has very low impedance at high frequencies (>1MHz), making it suitable for switching applications.

Working Principle

The 1N3308A diode operates by the Zener breakdown principle. When a high enough reverse voltage is applied to the diode, the current across it increases exponentially until the Zener breakdown voltage (Vz) is reached. At this point, the Zener breakdown phenomenon occurs and a large current is drawn from the diode. This initiated Zener breakdown current is then regulated by the Zener impedance of the diode, which is very low and is also referred to as the “flat-band” voltage.This regulated current is then drawn through the diode, maintaining the diode at the same voltage (Vz) despite changes in current or temperature. The 1N3308A diode is temperature compensated, meaning the diode can be guaranteed to provide a precise voltage over a wide temperature range.

Applications

The 1N3308A diode can be used for a variety of applications, including voltage regulating and voltage stabilizing, peak rectification, and protection from overvoltage and high voltage transients. It can also be used in switching applications, as the diode has very low impedance at high frequencies.The diode is also suitable for applications in automotive industries, as it is UL 94-V-0 compliant and has a temperature range of -55˚C to +125˚C, making it able to withstand high temperature environments.The 1N3308A diode is also suitable for various general purpose applications such as regulated power supply circuits, oscillators, pulse circuits, radio and television output circuits, inverters and converters, and voltage multipliers.

Conclusion

In conclusion, the 1N3308A diode is a single Zener diode, used mainly in DC stabilizing, voltage regulating, and peak rectifying applications. It has a breakdown voltage of 3.3V, a power dissipation rating of 125mW, a junction capacitance of 0.4pF, and a maximum reverse current of 1µA. Its wide temperature range and high surge current capability make it suitable for a variety of applications, including voltage regulating, voltage stabilizing, peak rectifying, protection from overvoltage, and protection from high voltage transients. It is also UL 94-V-0 compliant, making it suitable for automotive industries.

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