SMPZ3926B-M3/85A

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The SMPZ3926B-M3/85A is a single Zener diode with a 3.9V Voltage, 26mA Current, and 85mW power rating. This device is primarily used as a voltage regulator and power supply component, and has a wide range of applications. Its main working principle is to make use of the Zener effect to regulate the voltage of a circuit by controlling the flow of current.

The Zener effect is a result of the electrical break-down of a diode when its voltage is higher than the rated reverse breakdown voltage. This effect leads to reduced resistance between the anode and cathode of the diode and causes a current to flow through the component, limiting the amount of voltage that can be applied to it.

In a regulator circuit designed to provide a constant output voltage, the SMPZ3926B-M3/85A is used to limit the input voltage. When the input is lower than the zener voltage, the diode has a high impedance and no current can flow through it. This allows the input voltage to be applied to the output. However, when the input is greater than the zener voltage, the diode has a low impedance, allowing some current to flow through the diode and limiting the output voltage to the zener voltage.

A Zener diode can also be used in a linear power supply design to provide a steady, predictable output voltage. In this design, the SMPZ3926B-M3/85A is used to limit the input voltage, allowing current to flow through the diode and regulate the voltage at the output. This allows the power supply to provide a steady and reliable output.

The SMPZ3926B-M3/85A can also be used as a protection device in various applications. For example, when connected in series with a load, it can limit the amount of current passing through the load, providing it with protection from over current. It can also be used in reverse polarity protection circuits to protect against reverse voltage. Finally, the SMPZ3926B-M3/85A can be used as a voltage reference in various applications.

In conclusion, the SMPZ3926B-M3/85A is a versatile single Zener diode that can be used in a wide variety of applications, including voltage regulation, power supply design, protection, and voltage references. It works on the principle of the Zener effect which allows it to control the flow of current, allowing it to effectively regulate voltage.

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