Yes, there are some considerations when you're dealing with RF, but a modern 0402 0.1uF cap works pretty much everywhere because it has such a great frequency response due to its small size.
Now, explaining to people that their 10uF 6VDC 0402 across the power rails probably doesn't have as much capacitance as a 2.2uF 15VDC 0402 is a little subtle.
It is also an issue that decoupling caps can hold too much energy and keep a power domain operating when you wanted it shut down. That makes for some interesting debugging. Power domains now require discharge circuits because IC's use so little power.
Explain please?
Yes, there are some considerations when you're dealing with RF, but a modern 0402 0.1uF cap works pretty much everywhere because it has such a great frequency response due to its small size.
Now, explaining to people that their 10uF 6VDC 0402 across the power rails probably doesn't have as much capacitance as a 2.2uF 15VDC 0402 is a little subtle.
It is also an issue that decoupling caps can hold too much energy and keep a power domain operating when you wanted it shut down. That makes for some interesting debugging. Power domains now require discharge circuits because IC's use so little power.