phils-lab , 03-28-2022, 03:48 AM
Hi there,
Which breakout board are you referring to?
For two-layer boards, my aim is to keep a solid ground plane on the bottom layer with signal + power on the top. If there aren't too many disconnected islands, I'll also pour copper on the top (GND fill). However, I don't generally see much benefit from doing so.
For four or more layer boards, I'll just use internal layer ground fills with little-to-no fills on outer layers.
Best,
Phil