5KP120A-B Circuit Protection

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TVS - Diodes

TVS (Transient Voltage Suppressors) Diodes are special semiconductor diodes that are designed to protect sensitive electronic circuits against short term transients induced by lightning, switchgear and other problems.

A TVS diode looks like an ordinary diode although it is capable of dissipating much more power than a normal diode. It also has a higher reverse breakdown voltage than a normal diode. A TVS diode is a type of transient voltage suppression (TVS) device which is designed to protect the electronic circuits from over-voltage or electrical transients.

5KP120A-B Application Field and Working Principle

The NXP 5KP120A-B is a family of TVS diodes designed to protect sensitive electronics from damaging transient voltages caused by lightning, electrostatic discharge, or any other transient surges. The 5KP120A-B is an ultra-fast, ultra-low capacitance transient voltage suppressor that can be used in a variety of electronic application, such as computers, telecommunications equipment, automotive electronics, consumer electronics, medical equipment, and aerospace systems.

The 5KP120A-B has an operating voltage range of 1.6 to 475 volts and a peak pulse power rating of 120A. The device is designed to clamp surge voltages to a safe level within a few nanoseconds, protecting the connected electronic circuitry. The 5KP120A-B is available in an axial leaded package and is RoHS compliant.

The TVS diode works by clamping the voltage to a safe level when an over-voltage transient occurs. The device works by using a Zener diode in reverse bias and a PN junction diode. When the device is subjected to a transient surge, the Zener diode begins to conduct. This triggers the PN junction diode which in turn clamps the voltage down to a safe level. As long as the surge voltage does not exceed the Zener voltage, the device will protect the connected electronic circuit.

The 5KP120A-B is designed to protect circuits from transient over-voltage events, providing a clamping voltage within a very small timeframe. It is important to note that the device is not designed to protect the circuits from long periods of over-voltage. The device provides excellent transient protection and should be considered for use in any electronic application requiring protection from transients.

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