P4KA8.2HE3/73

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TVS (Transient Voltage Suppression) diodes are widely employed in a variety of electrical and electronic applications. These diodes play a key role in protecting sensitive electronic components and circuits from transient voltage spikes. A typical TVS diode, such as the P4KA8.2HE3/73, is a three-terminal device, designed to absorb large amounts of energy and dissipate it quickly during an electrical surge.

The P4KA8.2HE3/73 is a unidirectional diode with a breakdown voltage of 8.2V, a power rating of 600 watts, and a maximum peak pulse power rating of 1150 watts. Its fast switching action (within 1ns) and low clamping voltage (10V typical) make it suitable for a variety of applications.

The P4KA8.2HE3/73 is used primarily in applications that require protection against over-voltage transients, such as in automotive, industrial, and mobile device applications. Common applications include protection in power supplies, DC-DC converters, and embedded system controllers.

The basic working principle of a TVS diode is that of a circuit breaker. The diode uses a zener breakdown voltage to quickly clamp high voltage spikes. When a high-voltage transient occurs, the diode\'s zener voltage is exceeded and the current increases rapidly, causing the diode to go into reverse breakdown. This causes the voltage to quickly drop to the diode\'s safe clamping level, protecting the electronic components downstream.

In addition to over-voltage protection, the P4KA8.2HE3/73 provides electrostatic discharge (ESD) protection to I/O interfaces, such as USB and HDMI. It also offers radio frequency interference (RFI) suppression, helping to limit the interference emitted by electronic devices.

The TVS diode\'s ability to quickly clamp voltages makes it an valuable tool for protecting sensitive electronics. When used in applications where over-voltage protection is required, the P4KA8.2HE3/73 can effectively protect electronic components and circuits from damage due to transient voltage spikes.

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