I use... digikey 445-1565-1-ND all the time for this sort of thing. 
Small, cheap, and doubles as a convenient "power trace cut" by pulling 
it off the board if need be.  If I'm using a dc/dc followed by a voltage 
regulator to reduce switching noise I always put them before the 
regulator to keep the real high frequency muck attenuated.  Can also be 
used to isolate digital and analog power going to a mixed signal chip, 
and to connect a ground plane (for a dc/dc, say) to the main ground, etc.

(I should note these dc/dcs are the 50 - 300mA range, small stuff)

I did a design with that FTDI chip, I betcha dollars to donuts I used 
this part for the ferrite.

J


Matthew Mucker wrote:
> I'm working on a project that will incorporate the FT232RL chip from FTDI.
> 
> In the datasheet, they recommend a ferrite bead on the USB power supply line
> to the chip.
> 
> My question is: with the USB connector soldered to the PCB, and the chip
> soldered to the PCB, how do I get the bead in there?
> 
> I apologize if this is a naive question; my lack of electronics schooling
> may be showing, but I figure I have two choices:
> 
> 1) Add a wire jumper to the PCB and thread the bead on the jumper
> 2) This is a hobby board, not one for production. I don't need no stinkin'
> bead
> 
> Are either of these options the correct answer? What other answers are there
> that I haven't thought of?
> 
> Thanks,
> 
> -Matt
> 
> ===
> Never underestimate the bandwidth of a station wagon filled with backup
> tapes. 
> 
> 
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