1N979A

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A 1N979A is a type of single zener diode, primarily used as a voltage regulator. It is a device that allows current to flow in either direction, while regulating the voltage level. The zener diode is made of a semiconductor material such as silicon, arsenic, or gallium arsenide, resulting in a controlled breakdown voltage.

The 1N979A’s breakdown voltage is 4.7 volts and it is rated at 1 watt power dissipation. It is a 4-lead device that is typically used for voltage regulation (stabilization) in electronics circuits. It works by creating a “valley” (or diode region) at the point of the breakdown voltage. This valley is an effective barrier that limits the current and provides voltage regulation.

In an electrical circuit, the 1N979A functions as a voltage reference device. When the input voltage exceeds the breakdown voltage, current will flow from cathode to anode. This reduces the applied voltage and allows for a more stable output voltage. The diode can also allow current to flow in the opposite direction, however, this will require a higher input voltage.

The 1N979A’s applications include automotive electronics, consumer products, industrial equipment, and communication systems. In consumer products, it is often used to regulate the power supply of battery operated devices. In automotive electronics, it is commonly used to regulate voltage to motors and sensors. In industrial equipment, it is used to regulate the power supply of industrial machines such as drills and grinders. And in communication systems, the 1N979A is used to regulate the power of cell phone base stations and other similar devices.

The 1N979A is a robust semiconductor device, designed to operate in varied temperatures and other harsh environmental conditions. The device is available in both through-hole and surface-mount packages, and is commonly specified for environments with a temperature range of -55 to 150 degrees Celsius.

Overall, the 1N979A is a versatile single zener diode, capable of operating in a variety of conditions. It is a cost-effective voltage reference device, perfect for those applications requiring close voltage regulation, such as automotive electronics, consumer products, industrial equipment, and communication systems.

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