3EZ9.1D10/TR8

Diodes - Zener - Single

Diodes generally refer to two-terminal semiconductor devices whose main purpose is to conduct electrical current in one direction but prevent in another. Zener diodes are a special kind of diode that allow current to flow in both directions but are also capable of operating in reverse. When subjected to a voltage greater than the device\'s breakdown voltage, the diode will push the current through in a reverse direction and regulate the voltage. This means that if the voltage exceeds the diode\'s permitted level, the diode will limit the current that can flow, making the voltage stay constant. A single Zener diode, such as the 3EZ9.1D10/TR8, is the simplest form of this device and is primarily suited for applications in circuit protection.

Applications

The 3EZ9.1D10/TR8 is designed to act as a voltage regulator in order to protect circuits and other components from being overstressed. With its breakdown voltage of 9.1 V and a maximum voltage of 10 V, it can be used to convert unregulated AC power to a steady DC output, allowing for more precise measurement and control of fluctuating power levels. It can also be used in audio and video applications, as it will inhibit voltage spikes and protect sensitive electronic circuits from damage. Finally, its low package impedance makes it suitable for use in general-purpose low-voltage signal isolation applications.

Working Principle

When the voltage across the Zener diode reaches its reverse breakdown voltage, the resistor which is connected in series with the Zener diode will limit the current through it and force the voltage across it to remain constant. This voltage, which is referred to as the “zener voltage”, will act as a regulating factor and prevent the current from increasing further. Any attempt to increase the current beyond this level will result in an increase in the voltage across the diode until the peak point of the diode is reached, after which the current will become unstable and cause the device to fail.

The 3EZ9.1D10/TR8 Zener diode is designed to protect circuits and give a constant output when subjected to input spikes beyond its breakdown voltage. The resistor in series with it will limit the current through the diode, preventing the voltage from reaching dangerous levels. This makes the 3EZ9.1D10/TR8 well suited for applications where components must be protected from being overstressed and when a constant output is required.