SML4761HE3/5A

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SML4761HE3/5A is a single common cathode type shunt and switch regulator diode device that can be used in various diodes applications. It is one of the most common types of zener diode found in consumer electronics and other industrial applications. This article aims to explain the application field and working principle of the SML4761HE3/5A.

Application Field

The SML4761HE3/5A is primarily used in shunt regulator and switching applications. It is suitable for applications such as regulating current, limiting current, providing protection against over-current, voltage, and temperature. In addition, it can be used as a part of a ripple attenuator circuit, to reduce the amount of ripple that passes through the circuit. Other potential applications of the SML4761HE3/5A include voltage reference, voltage leveling, and electronic power supply design, among others.

Working Principle

The SML4761HE3/5A is a zener diode, which works on the principle of a reverse biased semiconductor junction. It consists of two different semiconductor materials, an anode and a cathode, that are placed in contact with one another. When a voltage is applied to the anode, the electrons from the anode are repelled from the junction and the current passes through the diode. The electrons passing through the diode are drawn to the cathode, thereby creating a potential difference across the diode. This potential difference is known as the breaking down voltage, and it is what causes the diode to work as a regulator or switch. The breaking down voltage of the SML4761HE3/5A is typically around 5 volts.

The SML4761HE3/5A is a shunt regulator diode, which means that when the input voltage applied to the circuit is higher than the breakdown voltage, the excess current is shunted around the diode. This enables the circuit to maintain a stable voltage and prevents any overcurrent conditions. On the other hand, if the input voltage is lower than the breakdown voltage, the diode will no longer be reverse biased, and the voltage will now be higher than the breakdown voltage. This is when the diode functions as a switch, as it is able to quickly and accurately switch the current in the circuit on and off.

Conclusion

The SML4761HE3/5A is a single common cathode type shunt and switch regulator diode device. It is used primarily in shunt regulator and switching applications, such as voltage regulating and current limiting. The working principle of the SML4761HE3/5A involves a reverse biased semiconductor junction that creates a breaking down voltage of around 5 volts. When the input voltage applied to the circuit is higher than the breakdown voltage, the diode acts as a shunt regulator diode, and when the input voltage is lower than the breakdown voltage, the diode acts as a switch.

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