Iron Powder Material |
Basic Iron Powder |
Material Permeability µo |
Temperature Stability (ppm/°C) |
Resonant Circuit Frequency Range (MHz) |
Color Code |
0 |
Phenolic |
1 |
0 |
100.0 - 300.0 |
Tan |
1 |
Carbonyl C |
20 |
280 |
0.5 - 5.0 |
Blue |
2 |
Carbonyl E |
10 |
95 |
2.0 - 30.0 |
Red |
3 |
Carbonyl HP |
35 |
370 |
0.05 - 0.5 |
Grey |
6 |
Carbonyl SF |
8 |
35 |
10.0 - 50.0 |
Yellow |
7 |
Carbonyl TH |
9 |
30 |
5.0 - 35.0 |
White |
10 |
Carbonyl W |
6 |
150 |
30.0 - 100.0 |
Black |
12 |
Synthetic Oxide |
4 |
170* |
50.0 - 200.0 |
Green/White |
15 |
Carbonyl GS6 |
25 |
190 |
0.10 - 2.0 |
Red/White |
17 |
Carbonyl |
4 |
50 |
50.00 - 200.0 |
Blue/Yellow |
26 |
Special |
75 |
882 |
LF filters, chokes |
Yellow/White |
* Non Linear
Material #17 has been developed as a temperature stable alternative to
the #12.
Frequency ranges shown are for best 'Q'/ Useful over broader frequency
ranges with lower 'Q'.
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