RoHS
RoHS Compliant]
Compliant]
EMI Cores
B-20 Series Bead Cores
Dimensions (mm)
Frequency range
SampleODKit Contents
ID
Model
2.8
Part
3.8Number
4.6
5.7
B-20F-28
B-20F-38
2.5
B-20F-46
3.4
B-20F-57
4.4
B-20L-25
B-20L-34
4.8
B-20L-44
9.7
B-20L-48B
20F-28
20F-38
20F-46
20F-57
20L-25
20L-34
20L-44
20L-48B
20L-95B
1.3
1.5
1.5
1.5
1.0
0.8
1.6
2.4
4.8
H
3.0
4.3
OD 4.3
2.8 8.0
3.8 1.2
4.6
4.4
5.7
7.0
2.5
3.4 4.8
4.4
4.2
4.8
1
2
●
●
●
●
ID
1.3
1.5
1.5
1.5
1.0
0.8
1.6
2.4
4.8
actual
device
Remarks
up to 300MHz
(mainly FM band range)
Dimensions (mm)
9.7 test with
ve frequency rangeB-20L-95B
is a reference only. Please
2
up to 100MHz
(mainly AM band range)
Frequency Range1
≤ 100 MHz
(AM band range)
H
3.0
4.3
4.3
8.0
1.2
4.4
7.0
4.8
4.2 use.
before
X
X
X
X
Quantity
≤ 300 MHz
(FM band range)
●
●
●
●
●
X
X
X
X
X
(coated)
20
20
20
20
20
20
20
20
20
Frequency range is for reference only. Please test with actual device before use.
Coated
ape and Dimensions
Dimensions
ID
Beads Cores
OD
H
See table above for dimensions
pedance vs. Frequency
B-20F-28
1000
1000
Impedance ()
Impedance ()
10000
100
10
B-20F-38
100
10
One world. One KEMET
© KEMET Electronics Corporation • P.O. Box 5928 • Greenville, SC 29606 (864) 963-6300 • www.kemet.com
1
1
10
100
Frequency (MHz)
1000
1
1
10
EMI ENG KIT 02 • 3/25/2015
100
Frequency (MHz)
1000
1
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