SA90A-E3/73 Circuit Protection

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SA90A-E3/73 TVS - Diodes Application Field and Working Principle

Surge Protection Devices (SPDs) protect applications from transient surges such as those occurring from electrical HAZards. They act like over voltage devices, suppressing the surge up to a certain level before it reaches the product. A Transient Voltage Suppression (TVS) Diode is designed to have the following characteristics - low capacitance, high surge current capability, very fast response time, and excellent clamping performance. One of these types of SPD is the SA90A-E3/73, a 90V unidirectional Transient Voltage Supressor Diode with an operating voltage of 70V and a peak power surge capability of up to 4,500A.

The SA90A-E3/73 is an integrated circuit-type device that is commonly used to protect equipment from voltage transients. It is designed to protect sensitive circuits from overvoltage transients that can cause circuit destruction. It is an excellent solution for high frequency applications as it has low capacitance and low inductance. It is capable of handling both positive and negative transient voltage conditions up to 70 volts and can protect equipment from transients up to 6kV. Its working principle is based on the fact that it will provide transient protection by suppressing the voltage when the voltage rises beyond its operating voltage level.

The SA90A-E3/73 has a wide range of applications in many different industries, including telecommunications, automotive, industrial, and medical industries. It can be used in applications such as signal line protection in mobile phones, data line protection in automotive and other control systems, LAN protection, digital systems, TV receivers, and CCTV cameras. It can also be used in medical equipment to prevent overvoltages from power source failure and reduce the risk of electric shock.

In terms of its working principle, the SA90A-E3/73 works in two different ways, depending on the type of surge protection it is being used for. The first type is called “avalanche” protection. This means that the diode is designed to break down very quickly when exposed to a voltage surge, clamping the voltage to a safe level. This type of protection is ideal for magnetic fields, electrostatic discharge (ESD) protection, and reverse polarity protection.

The second type is called “zener” protection. In this type of protection, the diode is designed to break down slowly at higher voltages to protect against the voltage spike. This type of protection is more appropriate for use in applications involving power surge and peak power protection. It is also useful in protecting sensitive equipment such as microprocessors.

The SA90A-E3/73 is a very effective protection device that can be used to safeguard the electrical equipment in many different industries. Its low capacitance and high surge current capability provide excellent protection against voltage transients and its fast switching time means it can protect equipment from damaging electrical transients in a very short period of time. With its wide range of applications and excellent protection capabilities, the SA90A-E3/73 is an excellent choice for many different types of surge protection needs.

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