SA70CAHE3/73 Datasheet/PDFTVS diodes have become increasingly popular in a wide variety of applications, particularly in consumer and industrial electronics. The SA70CAHE3/73 is a particular type of TVS diode that has been designed to provide enhanced protection for both over-voltage and over-current situations. This article will look at the application field and working principle of the SA70CAHE3/73.
Application Field
The SA70CAHE3/73 is designed to protect sensitive electronic components from over-voltage and over-current conditions. This includes protecting the circuits from temporary power supply fluctuations, which can occur due to sudden changes in load or externally induced voltage and current spikes. It is used in a wide variety of applications, particularly consumer and industrial electronics, such as automotive, avionics, computers, and white goods.
Working Principle
The SA70CAHE3/73 works by clamping the voltage across its terminals to a safe level when a voltage spike occurs. The device acts as a combination of a Zener diode and a voltage clamp. The Zener diode portion attracts and absorbs the sudden increases in voltage and then resumes its normal operation when the voltage returns to a safe level. The clamp portion of the device automatically limits the current when the voltage exceeds the safe level. The device includes built in surge protection so that it can tolerate and absorb multiple voltage surges.
In addition to providing over-voltage and over-current protection, the SA70CAHE3/73 also provides ESD (electrostatic discharge) protection. This is achieved through its construction, which includes an internal semiconductor junction that responds to sudden spikes in voltage or current. This junction is also responsible for turning the device on and off, allowing it to switch between a high-impedance and a low-impedance state during operation.
Conclusion
The SA70CAHE3/73 is a TVS diode that is designed to provide enhanced protection for both over-voltage and over-current conditions. It is used in a variety of consumer and industrial electronic applications and is capable of providing ESD protection. The device works by clamping the voltage across its terminals and by automatically limiting current when the voltage exceeds a safe level.