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FETtec Spike Absorber - RC Papa

FETtec Spike Absorber

FETtec Spike Absorber

Well-selected TVS diodes to absorb dangerous voltage spikes to protect connected components

Designed for use with an electrolytic capacitor, which can be mounted directly on it

Maximum operating Voltage 25,2V (6S LiPo)

1.62g weight

The Spike Absorber absorbs voltage spikes so that damaging voltages are not reached at all


The FETtec Spike Absorber uses well choosen TVS-Diodes to prevent the connected components from huge voltage spikes. The Spike Absorber is meant to be used in addition to a electrolyt capacitor. The capacitor can be mounted directly on top of it.

It will take care that the voltage dont rises above a specific level. Which means it absorbs energy once the specific voltage level is reached.

On electrical power systems using brushless motors, ESCs and LiPo batterys, high current and voltage peaks are common. The most known way to keep them in areas where they dont damage consumers that are connected to the battery is the usage of capaitors, which is in fact a good way. Capacitors dumpen any movement of the voltage. They store energy if the voltage rises and supply it when the voltage falls. But in some cases there are very short but high voltage spikes where capacitors are too slow. These spikes are mostly very short and appear in the area of some nano – microseconds, but can be easily the double or triple of the normal battery voltage. The most consumers survive a lot of them eaven if they are over their normal voltage rating. But if the spike is too strong, or it happens over a longer period, voltage regulators, capacitors and FETs can be damaged and fail. The Spike Absorber will absorb the energy of these spikes before they get in areas where consumers might get damage.

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