SA17CAHE3/73

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《TVS - Diodes》 SA17CAHE3/73 application field and working principle

Transient voltage suppressors (TVS) diode is a type of semiconductor component, which is used to protect electrical circuits from transient high-voltage shocks, such as electrostatic discharge (ESD), power surge and lightning-induced surge. It is often used in power lines, signal lines, and radio frequency (RF) applications.

SA17CAHE3/73 TVS diode is a board mount device designed to protect telecommunications equipment or hazardous line voltage. It is able to handle a wide range of voltage surge up to 8kV. The SA17CAHE3/73 is an unidirectional diode with an operating temperature from -55°C to 125°C. It has a maximum peak pulse power of 300W for a 10x1μs pulse and a minimum breakdown voltage of 17.0V.

The SA17CAHE3/73 TVS diode provides protection by conducting excessive transient current away from the protected circuits. Its reverse current is minimised by a well-designed schottky diode which handles the reverse current and the reverse voltage. In normal operation, the diode allows current to flow in a single direction, but when its reverse breakdown voltage is exceeded, the diode instantly conducts reverse current, thus providing protection against high voltage surge. Its inherently fast operation and low capacitance helps to maintain the circuit’s signal integrity and provide an additional layer of protection.

As for its application field, the SA17CAHE3/73 can be used to protect a variety of input and output circuits in ac or dc line protection, and it is suitable for telecom, medical and industrial applications. In telecom, the diode is employed to protect against lightning and surge. In medical applications, it can be used to protect sensitive test equipment, such as X-Ray equipment from surge. In industrial applications, the diode is used for electrical motors, welding machines, as well as switches, circuits and other critical components.

In summary, the SA17CAHE3/73 TVS diode is a unidirectional device which provides enhanced protection against transient high-voltage shocks. It is capable of operating in a wide temperature range and can handle a high peak surge. It is suitable for a variety of telecom, medical and industrial applications.

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