Grade |
Permeability |
Typical
Application |
FTF |
15000 |
Telecom and pulse transformers, common
mode chokes (CMC) |
FTA |
10000 |
T1/E1, DSL and pulse transformers,
common mode chokes (CMC) |
F39 |
10000 |
Wideband, pulse and current sense
transformers, common mode chokes (CMC) |
FT7 |
7500 |
T1/E1, wideband and pulse transformers,
common mode chokes (CMC) |
FT6 |
6000 |
T1/E1, wideband and pulse transformers,
common mode chokes (CMC) |
F10 |
6000 |
Wideband and pulse transformers |
F82 |
5000 |
T1/E1, wideband and pulse transformers,
common mode chokes (CMC) |
F9C |
5000 |
Wideband, pulse and current sense
transformers |
F65 |
5000 |
Fast Ethernet, 10/100 Base Tx, isolation
transformers |
F9 |
4400 |
Wideband and pulse transformers,
EMI/RFI suppression |
F81 |
4400 |
|
FTX |
4400 |
Extended operating temperature Gigabit
Ethernet |
F9N |
4000 |
Extended operating temperature, telecom
and pulse transformers |
F72 |
3500 |
|
F9Q |
2300 |
Telecom and pulse transformers |
P11 |
2250 |
Filter networks and proximity sensors |
P12 |
2000 |
Filter networks |
F61 |
1500 |
|
F58 |
750 |
Filter networks, proximity sensors
and gate drive transformers for SMPS |
|
|
|
F5C |
3000 |
CRT deflection yokes |
FB3 |
2700 |
SMPS and power conversion, 200 kHz |
F44A |
2400 |
SMPS and power conversion, 200 kHz |
F5A |
2300 |
SMPS and power conversion, 200 kHz |
F48 |
2300 |
SMPS and power conversion, 500 kHz |
FB2 |
2000 |
EMI/RFI filters and power conversion,
200 kHz |
F45 |
2000 |
SMPS and power conversion, 500 kHz |
F5 |
2000 |
|
F44 |
1900 |
SMPS and power conversion, 300 kHz |
F6 |
1800 |
Power chokes and near field antennae |
F47 |
1800 |
SMPS and power conversion, 300 to
750 kHz |
W10 |
1800 |
HF welding impeders |
F49 |
1000 |
Power inductors for voltage regulator
modules (VRM) |
F59 |
700 |
HF welding impeders |
|
|
|
FF1 |
1500 |
Balun transformers, EMI/RFI suppression,
transmission line transformers |
F53 |
1050 |
EMI/RFI suppression, common mode
chokes (CMC) |
F19 |
1000 |
EMI/RFI suppression |
F52 |
850 |
Common mode chokes (CMC), EMI/RFI
supression |
F13 |
650 |
EMI/RFI suppression and balun transformers |
F26 |
420 |
CATV power passing chokes |
FA1 |
370 |
RF transformers and tuned circuits |
F302 |
350 |
CATV power passing chokes |
F15 |
250 |
CATV power passing chokes |
F14 |
220 |
CATV power passing chokes, balun
transformers |
F16 |
125 |
Antenna rods and tuned circuits |
F01 |
120 |
RF transformers and tuned circuits |
FX1 |
80 |
RF filters and balun transformers |
F25 |
50 |
RF tuned circuits and antenna rods |
F21 |
40 |
RF tuned circuits |
F28 |
30 |
RF tuned circuits and antenna rods |
F31 |
15 |
RF tuned circuits and antenna rods |
FXQ |
12 |
RF tuned circuits and antenna rods |
F29 |
12 |
RF tuned circuits and antenna rods |