I have a circuit diagram that I am trying to replicate (actually the Teensy 3.0/3.1 circuit diagram shown here https://www.pjrc.com/teensy/schematic.html) and there is a component called simply 'ferrite'. On the board it is a SMB component, maybe in a 1206 package but with no markings.
Is this a common component such that there is a 'standard' value for it? (e.g. 'pullup resistors' are usually around 10kOhm or specified according to the internal resistance of the driving pin)