P4SMA480CA Circuit Protection

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The P4SMA480CA is a TVS diode that is widely used in the protection of sensitive electronic equipment. It is used to eliminate induced voltage transients due to electrical noise when connected to an external power source. To provide both visual and audible signals, the P4SMA480CA has a red LED that indicates when the protection circuit is functioning properly.

The P4SMA480CA is typically used for the protection of data lines, power supply lines and output pins of a system. It provides instantaneous protection from voltage transients that may occur due to EFT, ESD or high voltage transients. It is capable of protecting against high voltage transients up to 60V peak. It has a peak power rating of 5 watts and a clamping voltage of 48.5V.

The P4SMA480CA is a two-level device consisting of two components; a diode and a varistor. The diode component provides fast and efficient transient protection while the varistor component absorbs the high-energy transients to protect the connected circuits. It is designed to have a low clamping voltage to ensure that the transient voltage will not damage sensitive components.

The working principle of the P4SMA480CA is based on the capacitive energy transfer between the protection and protected circuit. When a transient voltage is applied to the P4SMA480CA, it absorbs the energy and passes it to the protected circuit in the form of an electric charge. This reduces the transient voltage and clamps it at a safe level. The P4SMA480CA also dissipates the excessive energy through an internal resistor, ensuring no damage caused by the transients.

In addition to its robust protection capabilities, the P4SMA480CA has an ultra-low capacitance which makes it suitable for data and communication lines. It also has a fast response time and high power dissipation to ensure that the connected devices are protected from transient voltages.