P4SMA68

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• TVS - Diodes

The P4SMA68 is a TVS (Transient Voltage Suppressor) commonly used in electronic circuits to protect them from electrical spikes found in power supplies. It is a two-terminal device composed of a Zener diode and an other device to enhance the power dissipation capability, like a transistor, for example. This type of TVS was first introduced in 1997 and its popularity has grown since then, since it is simple to use.

The P4SMA68 consists of two components: a Zener diode and a diode-transistor. This combination makes the TVS an ideal device for suppressing transients in the power supply circuit, since the diode-transistor creates a current path in which the semiconductor material can conduct the excess electricity away from the source. The Zener diode then controls the voltage drop across the TVS, thus preventing any degradation or destruction of the power supply.

The working principle of the P4SMA68 is quite straightforward. When the voltage across the components exceeds the breakdown voltage of the Zener diode, it switches on and the diode-transistor routes the current out of the circuit. This action effectively eliminates the transient surge and protects the circuit. As an extra layer of protection, the diode-transistor prevents the current from going back into the circuit, preventing it from damaging components further downstream.

The P4SMA68 is most commonly used in power supply circuits, as they are particularly susceptible to transient voltage spikes. By quickly suppressing these voltage spikes, the P4SMA68 helps to preserve the quality of the power supply, thus ensuring the long-term reliability of the circuit. The P4SMA68 can also be used in other circuits, such as digital and analog circuits, allowing them to be protected from transient voltage spikes.

In conclusion, the P4SMA68 TVS is a very versatile device that can be used to protect a variety of different circuits from transient voltage spikes. It is simple to use, making it an ideal choice for a wide range of applications.

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