1N2981A

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1N2981A is a type of Zener diode, also known as a voltage regulator diode, which is an electronic component that maintains a specific voltage. As a single diode, 1N2981A is suitable for applications where an accurate, low noise and stable well-regulated voltage power reference to a sensitive electronic circuit is needed. As a reflection of their core purpose, Zener diodes usually feature a very low ohmic series resistance. This means that even a tiny applied voltage will cause them to be forward-biased, providing reliable current conduction.

The Zener diode operates on the principle of reverse-voltage blocking. This means that there will be no conduction of electricity until a specified critical voltage is applied, and that once it is applied, the electric current will be allowed to flow in one direction only - from anode to cathode. The mode of operation of a Zener diode is different from that of a normal rectifier diode, in which the elec­tric cur­rent can flow in either direction. This makes it useful for precisely regulating the output voltage of a power supply circuit, and providing an efficient isolation barrier in high voltage circuits.

The 1N2981A is designed to effectively regulate up to a 72V at a maximum power of 150 mW. To make sure the device maintains its performance, it is necessary to ensure a temperature range of -65°C to +175°C. The device is enclosed in an axial leaded glass case, which ensures good quality insulation and makes it suitable for use in a variety of general purpose applications.

1N2981A is widely used in a range of electronic circuits. It can be used to accurately regulate the voltage in power supplies (particularly linear regulated power supplies) and help protect sensitive circuits from destructive overvoltage conditions. It can also be used to help reduce power dissipation in regulated voltage sources, and provide a reliable voltage reference for amplifiers. 1N2981A is especially useful in instrumentation and laboratory equipment where power supply stability and accuracy are paramount.

1N2981A Zener diodes can perform well in the most demanding applications. Their compact size, combined with their low leakage current, makes them more stable compared to their larger counterparts. This means they can be mounted close to the load, and consume much less power in the process. As a result, 1N2981A Zener diodes are a great choice for any power regulation applications where low power dissipation and accuracy are a priority.

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