61 Material Datasheet by Fair-Rite Products Corp.

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61-Material Datasheet
A high frequency NiZn ferrite material
developed for a range of inductive applications
up to 25 MHz. This material is also used in
EMI applications for suppression of noise
frequencies above 200 MHz. Excellent stability
characteristics.
Product Off erings:
• EMI Suppression Beads
• Beads-on-Leads
• Wound Beads
• Multi Aperture Beads
• Round Cable EMI Suppression Cores
• Round Cable Snap-Its
• Rods
• Toroid
• Application Specifi c Custom Components.
61 Material Characteristics:
Property Unit Symbol Value
Initial Permeability
@ B < 10gauss µ
i
125
Flux Density
@ Field Intensity
gauss
oersted
B
H
2500
15
Residual Flux Density gauss B
r
1000
Coercive Force oersted H
c
1.2
Loss Factor
@ Frequency
10
-6
MHz tan δ/µ
i
90
10
Temperature Coeffi cient of
Initial Permeability
(20-70ºC)
% / ºC 0.1
Curie Temperature ºC T
c
> 300
Resistivity ohm-cm ρ 1 x 10
8
106107108109
100
101
102
103
106107108109
100
101
102
103
Frequency (Hz)
61 Material Permeability vs Frequency
µ'
µ''
0
50
100
150
200
250
300
350
-50 0 50 100 150 200 250 300 350 400 450
μi
Temperature (ºC)
61 Material Permeability vs Temperature
0
500
1000
1500
2000
2500
3000
B (gauss)
H (oersted)
Measured on an 18/10/6mm toroid @10kHz
61 Material Hysteresis Loop
25⁰C
100⁰C
0%
20%
40%
60%
80%
100%
120%
-40 -20 0 20 40 60 80 100 120
Temperature (ºC)
61 Material Percent Original Impedance vs. Temperature
25 MHz
100 MHz
500 MHz
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10
100
1000
0.1 1.0 10.0 100.0
μ
H (oerteds)
61 Material Incremental Permeability vs Field Strength
0%
20%
40%
60%
80%
100%
0 2 4 6 8 10
Field Strength (Oe.)
61 Material % Original Impedance vs Field Strength
25 MHz
100 MHz
250 MHz
50 MHz
500 MHz
0
100
200
300
400
500
600
700
800
0 500 1000 1500 2000 2500
μ
B (gauss)
61 Material Amplitude Permeability at 10kHz
25ºC
100ºC
0
500
1000
1500
2000
2500
3000
3500
-25 0 25 50 75 100 125
B
(gauss)
Temperature (ºC)
61 Material Flux Density vs Temperature
10
100
1000
10 100 1000
mW/cc
B (gauss)
61 Material Power Loss vs Flux Density
2 MHz 25°C 2 MHz 100°C
5 MHz 25°C 5 MHz 100°C
7 MHz 25°C 7 MHz 100°C
10 MHz 25°C 10 MHz 100°C
15 MHz 25°C 15 MHz 100°C
0
100
200
300
400
500
600
0 20 40 60 80 100 120 140
mW/cc
Temperature (°C)
61 Material Power Loss vs Temperature
2MHz/200gauss
5MHz/120gauss
7MHz/100gauss
10MHz/70gauss
15MHz/50gauss