POWDERED IRON MATERIAL FOR TUNED RF VHF UHF AND HIGH Q CIRCUITS

NOMINAL PERMEABILITY	EFFECTIVE PERMEABILITY	RELATIVE Q	RECOMMENDED FREQUENCY RANGE	PERMACOR MATERIAL IDENTIFICATION	BASIC MATERIAL	UNIQUE CHARACTERISTICS
55	5.81	Lowest	10KHZ to 100KHz	22	MH-100	The highest permeability and lowest Q material suitable for chokes and noise filters.
40	5.69	Low	100KHZ to 500KHZ	5	MP-34	High permeability, low Q material, widely used in color television and AM TUNING. Suitable for width and linearity controls.
30	5.42	High	200KHZ to 1.5MHZ	20	Carbonyl HP	High Q excellent stability, ideal for threaded cores. Used in IF transformers and for AM TUNING.
25	5.32	High	500KHZ to 10MHZ	21	Carbonyl C	Low T.C., high Resistivity, ideal for cups, bobbins and threaded cores.
20	5.20	High	200KHZ to 1.5MHZ	18	Carbonyl GS-6	Highest Q material at 455KHZ. Highest Resistivity. Ideal for bobbin cores.
22	5.10	Medium	500KHZ to 1.5MHZ	38	MP-39	Low cost material with moderate Q and permeability. Used in IF transformers and for AM TUNING.
10	3.72	Medium	1MHZ to 40MHZ	10	Carbonyl E	Very stable material widely used, and available in any configuration. High Resistivity. Low Cost.
9	3.53	High	10MHZ to 50MHZ	11	Carbonyl TH	Higher Q than Carbonyl E. Low T.C. Excellent for Toroids
8	3.43	Very High	20MHZ to 50MHZ	12	Carbonyl SF	Highest Q in a toroidal form. Ideal for communication filters. Very stable material.
8	3.39	Very High	30MHZ to 50MHZ	13	Carbonyl J	High Q material. Suitable for VHF television coils.
7.5	3.34	Low	50KHZ to 5MHZ	30	Magnetite	Lowest cost material for sleves, cups and flexible shielding.
6	3.02	Highest	40MHZ to 100MHZ	14	Carbonyl W	Highest Q. Highest cost material. Best stability at 40-100 MHZ. Ideal for Toroid filters and FM TUNING.
3	2.05	Very High	50MHZ to 150MHZ	8	IRN-8	Synthetic oxide with high internal resistance, lowest losses. Ideal for FM TUNING.

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