Datasheet

4© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard E5009_B-20 • 9/18/2018
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
EMI Core – B-20 Bead Cores for Round Cables for Low & High Frequency (Bare & coated)
Performance Characteristics
Item Performance Characteristics
Operatingtemperature −25°Cto+85°C
Frequencyrange Lowfrequencyandhighfrequency
Outer diameter 2.5 – 9.7 mm
Inner diameter 0.8 – 4.8 mm
Thickness 1.2 – 8.0 mm
Type Bare and coated
Table 1 – Ratings & Part Number Reference
Part Number
Dimensions (mm)
Weight
Type
Frequency Range
1
OD ID T
(g)
≤ 10 MHz
(AM band
range)
≤ 300 MHz
(FM band range)
B-20F-28
2.8 ±0.3
1.3 ±0.3
3.0 ±0.3
0.07
Bare
X
B-20F-38
3.8 ±0.3
1.5 ±0.3
4.3 ±0.3
0.21
Bare
X
B-20F-46
4.6 ±0.3
1.5 ±0.3
4.3 ±0.3
0.30
Bare
X
B-20F-57
5.7 ±0.3
1.5 ±0.3
8.0 ±0.3
0.91
Bare
X
B-20L-25
2.5 ±0.3
1.0 ±0.3
1.2 ±0.3
0.03
Bare
X
B-20L-34
3.4 ±0.3
0.8 ±0.3
4.4 ±0.3
0.19
Bare
X
B-20L-4 4
4.4 ±0.3
1.6 ±0.3
7.0 ±0.3
0.46
Bare
X
B-20L-48B
4.8 ±0.3
2.4 ±0.3
4.8 ±0.3
0.34
Bare
X
B-20L-48B-L
4.8 ±0.3
2.4 ±0.3
4.8 ±0.3
0.34
Bare
X
B-20L-48B-A
4.8 ±0.3
2.4 ±0.3
4.8 ±0.3
0.34
Coated
X
B-20L-95B
9.7 ±0.3
4.8 ±0.3
4.2 ±0.3
1.09
Coated
X
1
Frequency range is for reference only. Please test with actual device before use.
Impedance vs. Frequency