1N4618 BK

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Diodes - Zener - Single

1N4618 BK is a type of Zener single diode commonly used in various applications. It can be used as a voltage regulator or a voltage reference source. This diode is designed to provide a reference voltage that can be connected to a load without diverting currents from the load. It is also used to protect electrical circuits from overvoltage and reverse currents.

The 1N4618 BK consists of two layers of doped semiconductor material and a junction. It is a three-terminal device with anode and cathode connected to the two layers of semiconductor material and the third terminal, the gate, which is connected to the junction. The anode and cathode are also referred to as the positive and negative terminals, and the gate is referred to as the control terminal. The voltage applied on the anode and the resistor in the gate causes the diode to conduct.

The 1N4618 BK works on the principle of Zener breakdown. When the anode voltage reaches a certain level, the junction breaks down and the diode starts to conduct. This level is called the Zener breakdown voltage, and it is also referred to as the knee voltage. The current corresponding to this level of voltage is called the Zener current. The voltage across the diode will remain constant until the Zener current is reached, thus allowing the diode to act as a voltage regulator or a voltage reference source.

The 1N4618 BK is commonly used in battery chargers and other applications where the output voltage needs to be maintained at a certain level. It is also used to regulate the voltage in AC-DC converters. Other applications include voltage reference sources, flyback circuits, voltage level shifters and reverse current protection circuits.

The 1N4618 BK is also used in audio and high-voltage applications. It is a low-noise diode, meaning that its output can be regulated with less noise and with higher accuracy. It has a low forward voltage drop and a wide operating temperature range.

In summary, the 1N4618 BK is a Zener single diode designed to act as a voltage regulator or a voltage reference source. It has a low forward voltage drop and a wide operating temperature range. It is commonly used in battery chargers, AC-DC converters, audio applications, and high-voltage applications. Its working principle is based on the Zener breakdown, when a certain level of voltage is reached, the current starts to flow and the voltage stays constant until the Zener current is reached.

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