MAGNETIC PROPERTIES OF FERRITE MATERIALS
(This table is 760 pixels wide)
Material Type 77 83 F J K W H
Initial Perm 2000 300 3000 5000 290 10, 000 15, 000
Max. Perm. 6000 3600 4300 9500 400 20, 000 23, 000
Max. Flux den. @
10 oer (gauss) 		4600 3900 4700 4300 330 4300 4200
Residual Flux
density (gauss) 		1150 3450 900 500 250 800 800
Vol. Resis.
(ohms-cm) 		1 x 102 1.5 x 103 1 x 102 1 x 102 20 x 107 .15 x 102 .1 x 102
Temp. Coeff.
-20°C - 70°C
(%/°C) 		.25% .4% .25% .4% .15% .4% .4%
Loss Factor 4.5 x 10-6
@ 0.1 MHz 		50 x 10-6
@ 0.1 MHz 		4 x 10-6
@ 0.1 MHz 		15 x 1--6
@ 0.1 MHz 		28 x 10-6
@ 1 MHz 		7 x 10-6
@ 10 MHz 		15 x 10-6
@ 10 MHz
Coercive
Force (Oersteads) 		.22 .45 .20 .10 1 .04 .04
Curie Temp.° C 200 300 250 140 280 125 120
Resonant Cir.
Freq. (MHz) 		1 KHz to
2 MHz 		1 KHz to
5 MHz 		1 KHz to
1 MHz 		1 KHz to
1 MHz 		0.1 KHz to
30 MHz 		1 KHz to
250 MHz 		1 KHz to
150 MHz
Wide band
Freq. (MHz*) 		.5 to
30 MHz 		1 to
15 MHz 		.5 to
30 MHz 		1 to
15 MHz 		50 to
500 MHz 		1 KHz to
1 MHz 		1 KHz to
1 MHz
Attenuation
RF Noise (MHz) 		1 to
40 MHz 		.5 to
20 MHz 		1 to
20 MHz 		0.5 to
10 MHz 		200 to
5, 000 MHz 		100 KHz to
1 MHz 		1 to
500 KHz

* Based on low power, small core application. Listed frequencies will be lower with higher power.

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