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TVS - Diodes

The MP4KE75AE3 is a Transient Voltage Suppressor (TVS) diode specifically designed to protect sensitive electronic equipment from voltage transients induced by lightning, electrostatic discharge, and other voltage surges. An assembly of TVS diodes can serve as a bidirectional, unidirectional or other type of surge protector, for instance, MP4KE75AE3 can be used as a bidirectional protector.

Application Field

The MP4KE75AE3 is often used in communication lines in wireless base stations, however it is suitable for a variety of other applications, including, but not limited to:

• Motor Vehicle Electronics
• Computer Systems
• Robotic Equipment
• Industrial Control
• Smart Meters
• Navigation Systems
• Satellite Communications
• Data Acquisition and Control Equipment
• Lighting and HVAC Systems
• Uninterruptible Power Supplies (UPS)

Working Principle

The MP4KE75AE3 is designed to protect sensitive electronic components against high energy transient pulses which travel through power supply lines, audio lines, and AC mains. It works by clipping off harmful voltage spikes, diverting them to ground instead, dissipating the energy as heat. This prevents undesired voltages from damaging the protected components, while allowing normal signals to pass unaffected.

When the voltage reaches the breakdown voltage of the diode, it can travel through it and to ground. This reduces the amplitude of the pulse to a level safe for the components, allowing the signal it carries to continue on to the load uninterrupted.

During normal operation, the TVS diode acts like a resistor with the same resistance as the diode\'s dynamic impedance. When a high voltage pulse hits it, however, the impedance of the diode increases rapidly and captures the surge, dissipating the energy as heat.

Conclusion

The MP4KE75AE3 is a TVS diode specifically designed to protect sensitive electronic equipment. It is used in a variety of applications, and works by clipping off harmful voltage spikes, diverting them to ground instead, dissipating the energy as heat. This prevents undesired voltages from damaging the protected components, while allowing normal signals to pass unaffected.

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