BZT55A5V6-GS18 Application Field and Working Principle

The BZT55A5V6-GS18 Zener Diode is a single component that is designed for regulating voltage or current for multiple applications. It is a three-terminal device with the anode connected to the diode\'s main terminal, the cathode is connected to the other two terminals and the gate to the third terminal.

Applications

BZT55A5V6-GS18 Zener Diodes are used in circuits for voltage regulation, overvoltage protection, powering digital integrated circuits and providing reference voltages to transistors and other active components. They also help in developing low power supplies and maintaining electrical insulation in electrical installations.

• Lighting ballast
• Battery charging
• Audio amplifiers
• Sensor Units
• Switch Mode Power Supply (SMPS)
• Automotive Electronics
• Telecommunications
• Regulated DC power supply
• Photo sensing

Working Principle

BZT55A5V6-GS18 Zener Diodes are designed to operate under the avalanche breakdown mechanism which occurs in the heavily doped regions of the diode’s p-n junction layer. This composition of the diode permits a large number of electrons to be accumulated in the vicinity of the junction and form an electric current. This current releasing the injected electrons generates a short-duration, high-voltage avalanche phenomenon. This phenomenon reduces the output voltage of the diode to a small, predetermined value and supplies it to the circuit to maintain a stable voltage.

At a low current, the BZT55A5V6-GS18 operates below the breakdown voltage of 5.6V and behaves as a normal diode, dropping a voltage of 0.7V. As the current reaches above the rated value, the breakdown voltage is reduced to the specified Zener voltage of 6V. As long as the current does not exceed the rated value, the output stays at 6V.

The BZT55A5V6-GS18 Zener Diode is a reliable and cost-effective solution. It provides a low-power, regulated and constant voltage supply to critical components in an electrical circuit. Its low profile and compact design make it suitable for a wide range of applications.