LCE22A Circuit Protection

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Transient voltage suppressors (TVS) diodes are an essential device for many electrical and electronic systems. The LCE22A is a high speed, low capacitance, parallel TVS diode array that provides superior protection from transient voltage events. This article provides an overview of the key features of this product and details its application field and working principle.

Key Features of LCE22A

The LCE22A has a number of features that make it an ideal choice for applications requiring high speed, low capacitance, and superior protection from transient voltage events. This product is the first choice for designs requiring high reliability and minimal voltage fluctuation. As it is a surface mount product, it is easy to install and features a small package size.

The LCE22A has a peak stand-off voltage rating of 5,000 volts and provides excellent clamping performance for common mode and differential mode transients. It also features galvanic isolation to protect downstream circuits against ESD. Furthermore, it features fast response time and a low capacitance of only 6.5pF, allowing it to effectively protect high-speed data and signal lines.

Application Field of LCE22A

The LCE22A is ideal for use in a variety of applications where transient protection is essential. These include power supplies, motor controllers, automotive electronics, cell phone base station and peripheral device protection, PoE (Power over Ethernet), and USB (Universal Serial Bus) ports.

The device is also commonly used in various industrial systems such as factory automation, process control, communications, instrumentation, and medical electronic), where transient protection is an important requirement.

Working Principle of LCE22A

The LCE22A is made up of two isolated series-connected back-to-back Zener diodes for protection against overloads. When an overvoltage event such as an ESD, lightning, or electrical surge occurs, the device will clamp the voltage to its breakdown voltage. This prevents any damage to the downstream circuits due to the overvoltage.

Furthermore, the device features a "self-restoring" feature, which protects from short-duration overvoltage events. This feature works by allowing limited current to flow through the device, until the overvoltage is removed. This helps to protect against any potential damage to the downstream circuits due to the overvoltage.

The advantage of using this product over other transient protection devices is its fast response time and low capacitance. This allows for effective protection for high-speed data and signal lines without sacrificing circuit performance.

Conclusion

The LCE22A TVS diode is an excellent choice for designs requiring transient protection. It has a peak stand-off voltage rating of 5,000 volts, a fast response time, and a low capacitance. It can be used in a variety of applications including power supplies, motor controllers, automotive electronics, cell phone base stations, peripheral device protection, PoE, and USB ports.

The device is also ideal for various industrial systems such as factory automation, process control, communications, instrumentation, and medical electronic due to its self-restoring feature. Moreover, it features galvanic isolation to protect downstream circuits against ESD. This makes it an ideal choice for applications requiring high-speed, low capacitance, and superior protection from transient voltage events.

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