GDZ33B-G3-18

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A Zener diode is a diode that allows current to flow in the forward direction in the same manner as a the standard silicon diode, but it also permits current to flow in the reverse direction when the voltage is above a certain value known as the breakdown or Zener voltage. Zener diodes are widely used to regulate voltages in electronic circuits. The Zener diode is also used in switching applications.

The GDZ33B-G3-18 (hereinafter referred to as G3-18) is a high-precision, medium-power Zener diode. It has a reverse breakdown voltage of 18V, a maximum reverse current of 3mA, and a maximum power dissipation of 500mW. It is designed to be used in a variety of circuit applications, such as voltage regulation, voltage selection, and voltage control.

Applications

G3-18 is found in a variety of applications due to its robust design and high-precision voltage regulation. It is often used for precision voltage regulation or to switch between two different voltage levels, such as in a power supply circuit. Additionally, it can be used for flyback protection by regulating the output voltage to prevent overvoltage. Finally, as with any Zener diode, it can be used for noise reduction in analog and digital circuits.

Working Principle

The G3-18 works in a similar way to a regular silicon diode, but with two important differences. The first is that the breakdown voltage of the G3-18 has been precisely set to 18V. This allows current to flow in the reverse direction once the voltage exceeds 18V. The second difference is that the G3-18 can control how much current is allowed to flow in the reverse direction. This is known as the Zener current, and is limited to a maximum of 3mA. The Zener current can be adjusted by changing the resistance in the circuit.

In summary, the G3-18 is a reliable and precise high-power Zener diode with a reverse breakdown voltage of 18V, a maximum reverse current of 3mA, and a maximum power dissipation of 500mW. It is often used for voltage regulation, voltage selection, voltage control, and flyback protection. The working principle of the G3-18 is similar to that of a regular silicon diode, but with the added benefit of a precisely set breakdown voltage and an adjustable Zener current.

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