1N986B

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The 1N986B diode is an example of a Zener diode, which is a silicon or germanium diode that operates in reverse break down mode. Zener diodes are typically used as voltage regulators to maintain a fixed voltage drop across the diode. 1N986B Zener diodes are listed as having a breakdown voltage of 5.6V and a power dissipation rating of 500mW. They come in a wide variety of packages, including the standard axial-mounted package and surface-mount packages.

The main application for the 1N986B is voltage regulation. It can be used for smoothing out voltage fluctuations in the presence of load changes, or for providing a stable voltage reference for other circuits. It is also commonly used in power supplies to protect circuits from excessive voltage changes and over-voltage conditions. It is also used to create current-limiting circuits to protect circuits from high current levels.

The basic working principle of a Zener diode is based on the same principle as a regular silicon diode or germanium diode. When forward biased, a regular diode only allows current to pass in one direction, while when reverse biased, it prevents current flow. However, in reverse breakdown mode, a Zener diode allows very small amounts of current to flow in the reverse direction, which helps in voltage regulation.

The reverse breakdown voltage (V_Z) for a Zener diode is determined by its design and materials used. The breakdown voltage is the voltage at which the Zener diode starts to conduct a small current in the reverse direction. The current increases as the voltage increases, up to a maximum rated current, beyond which the Zener diode enters a region called the Zener breakdown region. In this region, the Zener diode breaks down and the voltage across it stabilizes. This stabilization of voltage is used for voltage regulation in circuits.

When the 1N986B is used in a voltage regulation circuit, the diode is connected in series with a resistor and power supply. When the applied voltage is below the breakdown voltage of the 1N986B, the diode acts as an open circuit, not allowing any current to flow. However, when the voltage is equal to or above the breakdown voltage of the 1N986B, a small amount of current will start flowing through the diode and the output voltage will be stabilized at the Zener breakdown voltage of the diode.

The 1N986B is also capable of handling high-current applications. It has a peak inverse voltage (PIV) rating of 30V and a forward current rating of 300mA. The device also has a power rating of 500mW and a surge current rating of 2A. This makes it suitable for a wide range of power applications. In addition to voltage regulation applications, the 1N986B can also be used for switching, signal clipping, spike suppression and other applications requiring a controlled breakdown voltage.

In conclusion, the 1N986B is a type of Zener diode that can be used in various applications such as voltage regulation, switching and signal clipping. Its breakdown voltage of 5.6V, together with its high ratings, make it suitable for many applications. It is available in a wide range of packages and is easy to use and integrate into applications.

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