P6KE47 Circuit Protection

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Transient Voltage Suppression (TVS) diodes are semiconductor devices that play an important role in protecting circuits and systems from transient overvoltages. They are designed to limit the peak voltage in a circuit and to dissipate the energy of a high energy ESD or EFT transient, absorbing the energy without harming the downstream detination. The P6KE47 is a TVS device from Littelfuse that can handle voltages of up to 600W peak pulse power dissipation and is designed to protect sensitive electronic components from voltage transients caused by electrostatic discharge (ESD), electrical fast transients (EFT) and surges. In this article, we will discuss the application field and working principle of the P6KE47.

The P6KE47 has a wide range of application fields such as communication, computers, instrumentation, automotive, consumer electronics and industrial control. It is suitable for protecting against overvoltage transients on telecom lines, data lines, USB lines, audio lines and power lines. The device is also suitable for use in communication line protectors, communication equipment protectors, telephone line protectors, energy monitor protectors and TV receivers.

The working principle of the P6KE47 is simple and effective. When a voltage transient occurs, the device creates an electrical field that dissipates the energy of the transient, limiting the current flow and preventing damage to downstream components. The device typically uses a Breakdown Voltage of 11.5V which is low enough to protect sensitive components, yet high enough to handle high voltage transients. The device also utilizes three main components to dissipate the energy of a transient: a Zener diode, a bipolar transistor and an avalanche diode. When a voltage transient occurs, the Zener diode reduces the voltage to a safe level, the bipolar transistor switches off, and the avalanche diode takes over and holds the current low until the voltage transient dissipates.

The P6KE47 is an invaluable device for protecting against damaging voltage transients. With its wide range of application fields, low standoff voltage and high peak pulse power dissipation ratings, the device is perfect for a variety of applications. It is capable of protecting sensitive components from voltage transients caused by ESD, EFT and surges, providing reliable protection for your applications.

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