SA5.0HE3/54

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TVS – Diodes are composed of a Zener diode and a protective transistor connected in parallel. These devices protect sensitive circuits from overvoltage and high current transients triggered by lightning, static discharge, electromagnetic interference, and more. SA5.0HE3/54 is a multi-function transil used to protect a wide range of lines such as automotive control units, data lines, and audio-video signal lines from overvoltage.

The SA5.0HE3/54 is a unidirectional TVS diode with low capacitance. It can withstand voltages up to 5.0kV and can activate within a few nanoseconds. The device is rated for 5.0A peak, 500W peak power dissipation, and 2.0kW using power derating. The SA5.0HE3/54 can be operated over a wide temperature range from -40°C to 125°C.

The application field of the SA5.0HE3/54 consists of three main areas. The first is automotive electronics systems, where it is commonly used to protect against the high-voltage transients usually seen when operating a motor. The second area of application is in data transmission and communications systems. Here, this device can be used to protect sensitive electronics from the high-voltage transients seen in high-speed transmission lines. Finally, the SA5.0HE3/54 can be used to protect audio-video signal lines used in home entertainment systems.

The working principle of the SA5.0HE3/54 is relatively simple. When a voltage transient is detected, the TVS diode will start conducting, limiting the voltage. This will dissipate the excess energy in the form of heat, which is then dissipated through the integrated heat sink. The protective transistor will also start conducting, limiting the current and limiting any possible damage. Together, these components provide effective protection for sensitive electronics.

The SA5.0HE3/54 is an excellent choice for protecting sensitive electronics from overvoltage transients. It is small, reliable, and provides effective protection over a wide voltage and temperature range. While the device may not be suitable for all applications, it is a viable option for protecting automotive control units, data lines, and audio-video signal lines.

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