Placing of a decoupling capacitor at the top of your PCB with the MCU or at the bottom.

Which is more better and why, placing of a decoupling capacitor at the top of your PCB with the MCU or at the bottom. @PCB & Analog

Solution

Place your your cap as close as possible. If it fits at the top or bottom fine. But let it not be far from each other.

electro_cocoAPP•4/24/24, 3:52 PM

Placing them close in better with wide tracks short lengthed
You can place them on bottom as well in same situation

electro_cocoAPP•4/24/24, 3:52 PM

I prefer top mostly but sometimes bottom is ok

Chimmuanya OkereAPP•4/24/24, 3:52 PM

It won't affect the signal voltage if placed far

electro_cocoAPP•4/24/24, 3:52 PM

It will effect if far decoupling caps are local power storage for the mcu farther the power storage more noise injected

Solution

Joseph OgbonnaAPP•4/24/24, 3:53 PM

Place your your cap as close as possible. If it fits at the top or bottom fine. But let it not be far from each other.