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qkieu
Associate
August 5, 2025
Solved

IMU layout for flex PCB

  • August 5, 2025
  • 1 reply
  • 585 views

I am reading through TN0018 and saw that it is possible to have signal and plane on the bottom layer. Does this apply to flex PCB with 50-150um thickness?

qkieu_0-1754420772882.png

 

Best answer by Federica Bossi

Hi @qkieu ,

No problem on bottom if device is soldered on top layer. No signal or plane in same layer where the device is soldered. This to guarantee planarity and avoids vibration.

1 reply

Federica Bossi
Federica BossiBest answer
Technical Moderator
August 7, 2025

Hi @qkieu ,

No problem on bottom if device is soldered on top layer. No signal or plane in same layer where the device is soldered. This to guarantee planarity and avoids vibration.

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