PCB flex specification for Jetson Xavier NX

Robotics & Edge Computing Jetson & Embedded Systems Jetson Xavier NX
1

Hi,

I have two questions regarding the note in the Jetson Xavier NX Thermal Guide:

“For Jetson Xavier NX, the amount of flex (bow or bend) of the PCB should not cause more than 500 micro-strain within 5 mm of the Xavier SoC.”

  1. Could you please clarify the exact definition of this specification?

  2. Based on this definition, what is the allowable board deflection? Deformation/SoM length(69.6mm)=?%?

Thanks.