5KP48AHE3/73

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TVS (Transient Voltage Suppressor) is a type of semiconductor device designed specifically for high-voltage over-current protection. In this article, we will look at the application field and working principle of 5KP48AHE3/73, a frequently used TVS diode.

The 5KP48AHE3/73 is a unidirectional, high-power, 3-pin, 48 V clamping voltage, surface mount TVS Diode. Covering a broad range of protection applications, the device is commonly used for overvoltage and overcurrent protection for electronic equipment, such as communications networks, automotive electronic systems, medical imaging and data/communication systems. The high current capability (Ipp: 5.0A) of the device provides superior surge protection for systems without extra components. It is also RoHS-compliant and utilizes AEC-Q101-qualified silicon diode processes for automotive applications.

As for the underlying principle, the 5KP48AHE3/73 comprises a pair of Zener and termination diodes, which act as the clamp circuit embedded in the device. When overvoltage and overcurrent protection is triggered, the voltage on the diode junction is much higher than the mounted bias voltage, Ipp. At this moment, current will flow through the termination diode to ground, while Zener diode remains reverse biased. This ensures that no further voltage can be built up on the junction.

In conclusion, the 5KP48AHE3/73 is a high-power, 3-pin, 48 V clamping voltage TVS diode used for overvoltage and overcurrent protection applications. It is designed with a pair of Zener and termination diodes for high current capability and superior surge protection.

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