MXP6KE47A Circuit Protection

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MXP6KE47A Application Field and Working Principle

The MXP6KE47A is a versatile, highly reliable, and cost-effective low-voltage transil device. As a component of the TVS-Diodes family, the MXP6KE47A provides protection for a wide range of sensitive electronic devices from overvoltage transients. The product consists of three serially connected p-type junction zones which limit the overvoltage transient to a maximum of 6.8 volts.

Product Overview

The MXP6KE47A is housed in an industry-standard 4-pin SOD-123 package. It offers excellent EMI/RFI noise suppression, excellent discharge speed, low capacitance, fast response time and high surge energy capability. The device has a high peak pulse power rating of 200W and an operating voltage rating of 77V. Its maximum clamping voltage is 6.8V and its maximum peak pulse current is 4.7A.

Application Field

The MXP6KE47A is ideal for a variety of applications, including data/telecommunications, power electronics, consumer electronics, automotive electronics, computer peripherals and other industries. It provides protection for sensitive components from overvoltage transients.

Working Principle

The MXP6KE47A works by utilizing a three-stage avalanche protection scheme. During an overvoltage transient, the first two JFETs act as a high-voltage shunt regulator, diverting energy away from the electronic device and dissipating it. The third stage kicks in when the overvoltage is not properly dissipated and the p-type junction limits the overvoltage to a maximum of 6.8V. The internal inductor helps reduce the impedance to ensure an adequately sized clamping voltage.

Conclusion

The MXP6KE47A is a highly reliable and cost-effective low-voltage transil device. It offers excellent protection for a wide range of sensitive electronic devices from overvoltage transients. It is best suited for use in data/telecommunications, power electronics, consumer electronics, automotive electronics, computer peripherals and other industries. Its three-stage avalanche protection scheme provides superior protection and its fast response time ensures an adequate level of protection.

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