I am hoping to use a microSD card in an AVR project and am just trying to find values for all my components.
However, I am not sure what value of ferrite to use here. The few microSD schematics that I've seen with a bead just said "FERRITE" and didn't specify an inductance, or an impedance at a given frequency.
I have an Olimex development board with a full-size SD card using a 470 nH inductor here (PX128A1).
Is this an appropriate inductor for a microSD card's supply voltage as well?
Edit: the accepted answer is a good general answer, but I also have specific example of another Olimex board using a microSD. The OLiniXino board (schematics) uses a microSD with a 470 nH/1.76 R/250 mA inductor for Vcc filtering. They use the same inductors for SD/MCC and microSD. I suspect this is due to being able to reuse an inventory part, but at least it shows a known-working value.