Particle Impact Damper

Invented by NASA, PID is used to extend the lifetime of hardware. Especially created for harsh environments of high vibration, the PID offers reliability and quality improvement for the PCB where it would otherwise break and fail to function.

Vibration is attenuated by mounting a PID near the geometric center (anti-node) of the PCB.

The PID is housed in a sealed container that is filled to 90% with tungsten (W) balls. The counterbalance impact of tungsten balls in the PID dampens fundamental frequency fomode vibrations in the PCB assembly. This maximizes energy transfer to the PID to dampen vibration. The weight of the PID is approximately 10% the mass of the PCB assembly.

Mounting methods include: standard surface mount soldering, throughhole, screw mounting and epoxy mounting with permanent adhesives. 

PIDs can be custom made to fit boards where there is no free space available for a standard PID.