P4KA18HE3/54

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TVS - Diodes are widely used in the electronics industry for their capability to protect a circuit from overcurrent and overvoltage. The P4KA18HE3/54 from STMicroelectronics is a bidirectional overvoltage protector with high capacity. It is mainly used in automotive, industrial and consumer applications.

The P4KA18HE3/54 is a high power voltage suppressor. It is designed to be used in high side circuit protection of up to 18V (typical). The TVS - Diodes bidirectional over-voltage protector has an operating voltage of 4.3V typical, and a maximum peak pulse current of 1500A. It also features a low dynamic impedance, allowing it to be used in a variety of applications. Additionally, it is optimized for high-temperature operation.

The working principle of the P4KA18HE3/54 is to limit the amount of voltage that can pass through the diode. When the input voltage exceeds its maximum voltage rating, the diode turns on, becoming highly conductive. This causes the current to drop significantly, reducing the voltage that passes through the device. The P4KA18HE3/54 is designed with an integrated bypass circuit to prevent it from damaging itself in the event of a continuous fault.

The P4KA18HE3/54 is a popular choice in automotive, industrial, and consumer applications due to its ability to provide efficient protection to a wide range of circuits. Automotive applications include spark plug protection, circuit protection for alternators, sensors, and headlights. Industrial applications include solar panels, electric motors, and instrumentation/control systems. Consumer applications include laptop power supplies and USB ports.

The P4KA18HE3/54 is an ideal choice for protecting circuits from overvoltage and overcurrent. Its low dynamic impedance provides maximum surge protection and its integrated bypass circuit prevents the device from damaging itself in the event of a continuous fault. Additionally, its high operating temperature makes it suitable for use in a variety of applications, from automotive to consumer.

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