MXP4KE30AE3 Circuit Protection

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TVS-Diodes, or Transient Voltage Suppressors, are vital components used within electrical or electronic circuitry to protect against electrical transients. One such product within the TVS-Diode product family is the MXP4KE30AE3: a unidirectional, uni-directional, 45V transient voltage suppressor, designed to provide over-voltage protection for sensitive electronics. This document will discuss the field of application for this device, as well as the working principle behind its operation.

Application Field

The MXP4KE30AE3 from STMicroelectronics is a 45V transient voltage suppressor device designed to protect I/O lines from high-voltage events such as ESD, lighting, surges, inductive loads, or any other high-voltage event. These devices are designed to offer peak pulse power capabilities up to 600W at a 10/1000 μs waveform. The device is also designed to minimize the voltage overshoot for applications that require high tolerance of port protection. This device is an ideal solution for sensitive electronics as it is designed to protect against induced ESD or surge events.

The device has a wide operating temperature range of -55°C to 150°C. This allows it to be used in a variety of applications, including automotive, medical, and consumer applications. The device is also offered in a variety of packages, including the 4-pin SOD-723 and standard SMA packages. This gives designers the flexibility to choose the optimal package to meet their application\'s specific requirements.

In terms of performance, this device is designed to provide superior protection against high-voltage transients. It has a breakdown voltage of 45V and an Ipp of 600W at 10/1000 μs. This is ideal for applications requiring a high level of protection for their sensitive electronics.

Working Principle

The MXP4KE30AE3 device operates via the Avalanche effect. This device utilizes an anti-parallel diode between the drain and source pins. This diode acts as a shunting element that prevents excessive voltage buildup across the drain and source pins, resulting in much more reliable protection. The mechanism works by providing the current needed to activate the junction junction breakdown, which then triggers the avalanche action.

As the voltage across the drain and source pins increases past the avalanche voltage, it causes flow of carriers through the diode junction and onto the drain and source pins. This flow of carriers is what reduces the voltage across the drain and source to the safe limit, thus protecting the sensitive electronics from over-voltage events. This allows the MXP4KE30AE3 device to provide reliable protection against high-voltage events.

In addition to the Avalanche effect, the MXP4KE30AE3 device provides other benefits. It is designed to operate over a wide temperature range and offers peak pulse power capabilities up to 600W at a 10/1000 μs waveform. This device also offers superior protection against high-voltage transients and is available in a variety of packages, making it an ideal solution for sensitive applications.

Conclusion

The STMicroelectronics MXP4KE30AE3 device is an unidirectional, 45V transient voltage suppressor designed to provide high-voltage protection for a wide variety of sensitive electronics. The device utilizes the Avalanche effect to achieve the desired protection and is constructed to offer superior protection against ESD, surges, inductive loads, lightning, and other high-voltage transients. The device is available in a variety of packages, allowing designers to choose the optimal package for their application. It is also designed to operate over a wide temperature range and offers peak pulse power capabilities up to 600W at a 10/1000 μs waveform. This makes it an ideal solution for sensitive electronics applications requiring high levels of protection.

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