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IMU layout for flex PCB
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?
Federica BossiBest answer
ST Technical Moderator
Aug 7, 2025 2:21 PM UTC
Hi
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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