SA26HE3/73

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TVS (Transient Voltage Suppression) diodes are components designed to protect other electronics from over voltage or from electrical transients. It is an important component in any electrical system as it increases the system’s reliability and helps to ensure the safety of both the system and personnel working with it. The SA26HE3/73 is a type of TVS diode that is designed to protect sensitive electronics from over voltage transients in the range of 20V to 33V.

Application Field:

The SA26HE3/73 is most commonly used in applications that require protection from transient voltage stemming from switch turn-on, such as automotive computers, motor control circuits, and audio amplifiers. It can also be used in high speed data line applications, such as on EMS controllers and other dataline applications. It is also well suited for protecting cameras and image sensors against static electricity or transient voltage coming from lighting devices.

Working Principle:

The SA26HE3/73’s working principle is simple, yet effective. It is designed to provide protection from transient voltage through a variety of mechanisms. The first is a series of avalanche breakdown junctions, which allow for a slight increase in voltage before the diode starts to conduct. When the voltage threshold is exceeded, the diode quickly conducts the excess voltage and prevents it from reaching the circuit it was intended to protect. Additionally, the SA26HE3/73 also uses a temperature-dependent impedance element to protect against lower amplitude, but longer duration transients, such as those present in automotive applications. This is because the temperature-dependent elements have a dynamic response time that can block short duration transients while allowing longer ones to pass through. This ensures that the system is protected from both low amplitude and high amplitude transients.

Conclusion:

The SA26HE3/73 is an effective and reliable TVS diode designed to provide protection from over voltage transients in the range of 20V to 33V. It is a component that is commonly used in automotive computers, motor control circuits, data line applications, audio amplifiers, cameras, and image sensors. The protection it provides is efficient and reliable, thanks to a series of avalanche breakdown junctions and a temperature-dependent impedance element. By utilizing these elements, it is able to protect against both low and high amplitude transients, ensuring the safety and reliability of the system it is protecting.

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