1N4305

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The 1N4305 diode is a small signal, low power rectifier diode typically used in switching power supplies. It is sometimes referred to as a 1N5819, which is its American Military designation number. It is made of a silicon body and is encapsulated in a very small, epoxy coated, through-hole package with a maximum current rating of 8A. The 1N4305 diode has a forward voltage drop of 800mV, a reverse recovery time of 40 ns and can withstand peak surge current of up to 250A.

The 1N4305 diode is widely used in consumer electronics gadgets, as well as personal computers, mobile phones and other similar applications. It is a very common replacement for large power diodes such as the 1N5853 or 1N5504. The 1N4305 is also commonly used to protect against power surges and line transients.

The working principle of the 1N4305 diode is similar to that of any rectifier diode. When a voltage of the appropriate polarity is applied to its anode, current flows from the anode to the cathode. The diode exhibits a high resistance (or forward impedance) in the reverse bias direction, effectively blocking any current flow from the cathode to the anode. In other words, the 1N4305 acts as a “one way switching device.”

The reverse recovery time of the 1N4305 diode is the time it takes for the diode to change from a reverse bias state to a forward bias state and a minimum of 40 ns is required. This reverse recovery time is important in switching power supplies and other applications as it controls the time needed for the device to turn on and off.

The 1N4305 can handle peak surge currents up to 250A and its low power consumption makes it ideal for use in various low-voltage, low-power circuits such as mobile phones, laptops, and other low-power applications. It is commonly used to protect against power surges and line transients, as well as other transient events that may occur in the circuit.

In conclusion, the 1N4305 diode is a very popular device for use in low-voltage, low-power circuits due to its excellent forward voltage drop, reverse recovery time and high surge current rating. It is a reliable and efficient rectifier diode, which makes it ideal for use in a variety of different circuits, such as consumer electronics, mobile devices and computer applications.

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