Tania,
I'll add to Tony's comment, that not only the material, but sometimes its
physical configuration make a difference. For example, one large firm makes a
ferrite SM device with superior impedance down to about 10 MHz. EVERYONE can
make 100 MHz devices... but the patented construction of this one makes it
useful at lower frequencies as well.
In any case, I'd not rely too much on results from one sample, as that may be
from one especially good batch. In fact, if you have any control over the
design, I'd think it would be smarter to plan on using beads that are not quite
as good (but _are_ more available) for production. That might take a couple of
extra capacitors, somewhere, but it would prevent sole-sourcing and depending on
one firm's idea of QC.
Cortland
====================== Original Message Follows ====================
>> Date: 10-Apr-97 20:11:09 MsgID: 1047-63432 ToID: 72146,373
From: INTERNET:tania.gr...@octel.com >INTERNET:tania.gr...@octel.com
Subj: Can someone identify this ferrite?
Chrg: $0.00 Imp: Norm Sens: Std Receipt: No Parts: 1
While performing emission testing, we have discovered that a certain
ferrite performed better than some others, however, we cannot identify
the source.
It is a standard issue, almost square, clamshell type housing to be
used with a cable approximately 10 mm diameter, with an outer
off-white plastic case with the following markings:
KG (italics) inside a rectangle, molded on one side
SFC-10 sticky-on white label on the other side
If anyone is familiar with this type, I would be most grateful if you
could identify it. Thank you.
Tania Grant, Octel Communications Corporation
tania.gr...@octel.com
====================== End of Original Message =====================
