1N4621-1

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A diode is a two terminal semiconductor device which only passes current in one direction. Zener diodes are a type of diode which allows current to flow in the reverse direction when the voltage is above a certain breakdown voltage. This feature makes them ideal for use as voltage references. The 1N4621-1 is a very common example of a single Zener diode.

The 1N4621-1 is a semiconductor component composed of a single PN junction. The PN junction is composed of two types of doped semiconductor material, n-type and p-type, back-to-back with each other. The PN junction forms a diode with semiconductor material stretching across its entire length. This diode is capable of withstanding high voltages, allowing it to operate as a voltage reference device.

The 1N4621-1 application field is for use in power supplies and DC to DC converters. The 1N4621-1 has a breakdown voltage of 55 volts. This breakdown voltage determines how much electricity the diode can pass before it starts to conduct. In a power supply or DC to DC converter, the Zener diode is used to limit the output voltage from exceeding a certain level.

The working principle of the 1N4621-1 is based on the breakdown voltage of the PN junction. In normal operation, the diode does not conduct current since the voltage across the device is below the breakdown voltage. However, when the voltage exceeds the breakdown voltage, the diode begins to conduct current. This current is then limited by a resistor, or other protection device, allowing the current to pass through the circuit safely.

The 1N4621-1 is a very useful Excessive Voltage Protection (EVP) device. It is also used in high voltage circuits, such as line-voltage electronics, to prevent over-voltage damage to sensitive electronic components. The 1N4621-1 Zener diode is also used in battery-powered circuits as a Voltage Limiting Device (VLD) to protect battery cells from over-voltage.

In conclusion, the 1N4621-1 is a single Zener diode with a breakdown voltage of 55 volts. It can be used in a variety of circuits, such as power supplies and DC to DC converters, for voltage reference and EVP/VLD purposes. The 1N4621-1 is an extremely useful device and should be considered for any design requiring a single Zener diode.

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