1N980A

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1N980A – Single Zener Diode

The 1N980A is a single Zener diode integrated circuit (IC) designed for voltage regulation applications. The diode is a semiconductor device that works as a one-way electrical switch and allows electric current to flow in one direction only. It prevents back flow from the circuit, which helps ensure device protection. The diode is fabricated using silicon semiconductor material and comes in multiple packages including an axial, through hole terminal type and a surface-mount terminal type. This versatile Zener diode is used in many different applications.

Application Field

1N980A Zener diodes are mostly used in regulated power-supply applications, such as in switching power supplies, battery chargers, voltage regulators, and oscillator circuits. They are also used in digital logic circuits, or anywhere a steady and reliable current passing through a device is required. The diodes can be used to create constant and controllable power when used with the help of a voltage reference circuit. In addition, 1N980A are frequently used as clamping diodes to prevent overvoltages from damaging circuit components.

Working Principle

The 1N980A operates like any other Zener diode. It is a special type of silicon p-n junction diode that, when connected to a circuit, allows current to flow in one direction and blocks current flow in the opposite direction. However, unlike some other types of diodes, it also has a breakdown voltage. When the voltage across the circuit exceeds the reverse breakdown voltage of the diode, it breaks down and causes current to flow in both directions, essentially shorting out the circuit. The breakdown voltage of the 1N980A is 3.9 volts and it can withstand up to 500mA.

When used as a regular diode, the 1N980A has a forward voltage drop of 0.7 volts. As a Zener diode, the forward voltage drop remains almost the same since the current flowing in the Zener diode is typically much lower than the current in a regular diode. When used as a voltage reference circuit, the diode’s reverse-breakdown voltage remains consistent at all times, as long as the current through the diode is kept at a safe level. This provides a steady and stable voltage source for the circuit.

The 1N980A is a reliable diode that is designed to offer superior performance in various applications. They are widely used in voltage regulators, digital logic circuits, oscillators, battery chargers, and other electronic equipment due to their high quality, low leakage, and low cost.

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