3 ms·
The balls are missing to enable making connections to inner balls in a board with fewer layers. The outer balls take up space and so block the traces from inne
by Zeetah 3y ago
The balls are missing to enable making connections to inner balls in a board with fewer layers.
The outer balls take up space and so block the traces from inner balls. By strategically removing some of the outer balls, you create channels that can be used for routing taxes from the inner balls.
- the__alchemist 3y agoThat makes sense! I wish I saw this on their MCU line... (Although you can thread a tiny trace between the balls depending on manufacturer, I don't like it!