SA22CA-E3/73 Circuit Protection

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

TVS diodes are used in many electronic applications and are an essential component for those looking to protect their circuits from voltage transients such as electrostatic discharge, lightning strikes, and other surges. The SA22CA-E3/73 is a unidirectional TVS Diode specifically designed for automotive applications. This application field and its working principle will be explored in this article.

Understanding TVS Diodes

TVS diodes, also known as Transient Voltage Suppression Diodes, are a type of specialty diodes designed to protect circuits from short, high-voltage transients. These transients are typically caused by electrical discharges such as electrostatic discharge (ESD) or lightning strikes, and can cause serious damage to sensitive electronic components if left unchecked. TVS diodes are specifically designed to clamp these transient voltages and limit electrical energy, protecting the circuit. TVS diodes come in both unidirectional and bidirectional varieties, each offering different levels of protection from opposite directions.

SA22CA-E3/73 Overview

The SA22CA-E3/73 is a unidirectional TVS diode designed for automotive applications such as engine control units, airbag controllers, and Hybrid Electric Vehicle modules. It is rated for a peak pulse power of 550W and a peak pulse current of 145A. Additionally, it has an operating voltage range of 5V to 18V and a maximum clamping voltage of 27.7V. The SA22CA-E3/73 is relatively small in size, measuring only 2.78mm x 1.98mm x 0.9mm, making it a good choice for applications where size and weight are a factor.

Working Principle

The working principle of a TVS diode involves the notion of clamping. When a potential transient is detected at the anode, the diode\'s voltage breakdown is triggered, creating a low-impedance path to ground. This allows excess electrical energy to be discharged to ground and clamps the voltage at its maximum breakdown voltage, protecting the circuit. The SA22CA-E3/73\'s maximum breakdown voltage is 27.7V, giving it a wide range of possible applications.

Conclusion

The SA22CA-E3/73 is a unidirectional TVS diode designed for automotive applications and is ideally suited for use in engine control units, airbag controllers, and Hybrid Electric Vehicle modules. Its peak pulse power is rated at 550W with a peak pulse current of 145A, and its maximum clamping voltage is 27.7V. When a potential transient is detected at the anode, its voltage breakdown is triggered, creating a low-impedance path to ground and clamps the voltage at its maximum breakdown voltage, protecting the circuit from damage.

The specific data is subject to PDF, and the above content is for reference