P - These are perminvar ferrites and undergo irreversible changes of characteristics
(µ increases and loss factors become much greater - especially at high frequencies)
if subjected to strong magnetic fields or mechanical shock.
Data is derived from measurements on toroidal cores. These values cannot be directly
transferred to products of another shape and size. The product related data can be taken
only from the relevant product specifications.
Applications guide
Short and medium wave antennae, EM suppression, High frequency inductors and transformers
Parameter
Symbol
Standard Conditions
of Test
Unit
FF1
F53
F52
FA1
F24
F14
F01P
F21P
F31P
Initial Permeability
(nominal)
µ
B<0.1mT 10kHz
25°C
-
1500
± 20%
1050
± 20%
850
± 20%
370
± 20%
350
± 20%
220
± 20%
120
± 20%
40
± 20%
15
± 20%
Saturation Flux
Density (typical)
Bsat
H=796 A/m 10 Oe
25°C Static 100°C
mT
230*
210
210
310
350*
350
280
240
220
Remanent Flux
Density (typical)
Br
H0 (from near saturation)
10 kHz 25°C
mT
175
130
130
270
200
217
190
155
135
Coercivity (typical)
Hc
B0 (from near saturation)
10 kHz 25°C
A/m
30
50
50
60
65
172
30
1200
1600
Loss
Factor
(maximum)
![]()
100 kHz B<0.1mT 25°C
250 kHz
400 kHz
500 kHz
1 MHz
2 MHz
3 MHz
5 MHz
10 MHz
15 MHz
20 MHz
40 MHz
100 MHz
200 MHz
10-6
140
-
-
-
-
-
-
-
-
-
-
-
-
-
26
-
-
-
-
-
-
-
-
-
-
-
-
-
26
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
65
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
40
42
50
-
-
-
-
-
-
-
-
-
-
-
-
-
45
-
-
-
-
-
-
-
-
-
-
-
-
-
50
50
55
65
75
100
125
300
225
Temperature Factor
![]()
B<0.1mT 10kHz
+25°C to +55°C
10-6/°C
-
-
-
-
-
12 to 30
-
-
-
Curie Temperature (minimum)
TC
B<0.1mT 10kHz
°C
80
100
100
180
180
140
300
300
400
Resistivity (typical)
![]()
1 V/cm 25°C
-cm
5x108
1x106
1x106
1x108
1x107
1x106
52x104
* Bsat measured at H=1200 A/m
Bsat measured at H=4000 A/m

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