Ferrite beads in Quasi-Resonant Switch-Mode Power Supply (QRSMPS) primary?
Judging by the layout in the data sheet (p. 42), Fairchild seems to recommend just any good ol' ferrite bead with a jump wire through it.

Something like this should do the trick:


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If I were a sloppy manufacturer finding a "BEAD" on the parts list with no further specification, I wouldn't care about the ferrite material or any electrical characteristics - I would slap in the cheapest cheapo I could find (or pull from my junk bin). Some designs tolerate this way of stuffing a board, some don't. Those that don't better have a complete BOM.

The bead's job is to smooth out some sharp edges in the drain voltage, maybe above something like 50&nbsp;MHz, in any case way above 90&nbsp;kHz.