1N3339RB

1N3339RB Diodes - Zener - Single

The 1N3339RB is a silicon Zener diode of the single type. It is a reverse breakdown semiconductor device that allows current flow in one direction. It has an outstanding ability to operate under reverse voltage up to 50V. It is a very useful component for many applications because it has an excellent infinite reverse forward gain and a low leakage current. The 1N3339RB diode is typically used for voltage-regulation, power supply protection, and voltage-level shifting. In addition, it can be used as a temperature stable reference in power-on reset and driver circuits.

Application Field

• Temperature Stable Reference Circuits
• Voltage Regulation and Level Shifting
• Power Supply Protection
• Over-Voltage and Over-Current Protection
• Clamping Circuits
• Driver Circuits

Working Principle

The 1N3339RB is a single Zener diode that works on the principle of reverse breakdown of a semiconductor. It will conduct current in the forward direction and when the voltage applied across its junction is greater than its Zener breakdown voltage, the current will start to flow in the reverse direction as well. Since it has a high resistance in the reverse direction, the resulting voltage regulated voltage can be used for various applications. This Zener diode has an excellent voltage regulating capacity and it can protect power supplies from over-voltage and over-current conditions.

When the reverse voltage across the 1N3339RB exceeds the Zener breakdown voltage (Vz), the junction breaks down and the reverse current increases exponentially. The Zener breakdown voltage is the most important parameter of this diode and it will determine the level of voltage regulation and over-voltage protection that it offers. Since the breakdown voltage is temperature dependent, the voltage regulation of the 1N3339RB is very temperature stable.

The 1N3339RB has a low forward drop and low leakage current that makes it ideal for clamping circuits and voltage level shifting applications. The low forward drop means that the power dissipation is low and consequently, it can do its job using a small heat sink. The low leakage current is also beneficial in that it improves the stability of the regulation across the Zener diode.

Conclusion

The 1N3339RB Zener diode is a single component device with a very varied range of applications ranging from temperature stable reference circuits to driver circuits. It is an excellent device to use when in need of voltage regulation, over-voltage protection or voltage level shifting. The 1N3339RB has an excellent reverse forward gain and a low leakage current, making it ideal for all kinds of applications.