MP5KE170AE3

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The MP5KE170AE3 is a device designed for use in high-speed, high-capacity applications. It is a low capacitance TVS-Diode and as such can protect against voltage transients and transients associated with ESD (electrostatic discharge) and surge. Its applications include low voltage ESD protection, power supply protection, power line protection, data line protection, and high-speed communication line protection.

The MP5KE170AE3 is a low capacitance voltage clamping device. This means that it can protect against overvoltage transients by clamping any voltage surges above its threshold voltage. In this way it acts as a "circuit breaker" for the protected circuit. The device is constructed of two back-to-back Zener diodes and is able to withstand peak transient voltages up to 1700V. The clamping voltage (Vclamp) is between 5.5-6.5V for an 18V supply voltage.

The working principle of the MP5KE170AE3 can be best understood by looking at the circuit diagram below.

When a transient voltage is applied to the device, the diodes in the device will begin to conduct current. The Zener diode will limit this current by clamping the voltage across it to the breakdown voltage, thus preventing further current flow and protecting the circuit from the overvoltage. The device also has a very low capacitance of 5.5pF. This is important as it means that the device can respond to voltage transients quickly, thus providing effective protection.

The MP5KE170AE3 is an excellent device for use in overvoltage protection circuits, particularly in high-speed, high-capacity applications. Its low capacitance ensures that it responds quickly to voltage transients, and its clamping voltage is ideal for protecting sensitive components from voltage surges. The device is well suited for a wide range of applications, including low voltage ESD protection, power supply protection, power line protection, data line protection, and high-speed communication line protection.

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