Datasheet

5© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard E5010_ESD-R-SR • 9/12/2018
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
EMI Core – ESD-R-SR Toroidal Cores for Round Cables for Low Frequency at 150 kHz (Bare, coated & with case)
Performance Characteristics
Item Performance Characteristics
Operating temperature −25°C to +85°C
Frequency range Low frequency
Outer diameter 31.0 – 59.0 mm
Inner diameter 19.0 – 36.0 mm
Thickness 12.7 – 21.0 mm
Type Bare, coated, and case
Case ame resistant rating UL94 V–2
Material MnZn S15H
Table 1 – Ratings & Part Number Reference
Part
Number
Dimensions (mm) Weight
Type Color
Compatible
Toroid Core
(Bare Type)
Frequency Range
1
Material
OD ID T (g)
≤ 10 MHz
(AM band range)
≤ 300 MHz
(FM band range)
MnZN NiZn
ESD-R-31SR
31.0 ±0.8
20.0 ±0.8
14.9 ±0.5
32.5
Bare
—
—
X
S15H
—
ESD-R-38SR
38.0 ±0.8
19.0 ±0.8
12.7 ±0.5
52.5
Bare
—
—
X
S15H
—
ESD-R-47SR
47.0 ±1.0
27.0 ±0.8
15.0 ±0.5
83.4
Bare
—
—
X
S15H
—
ESD-R-57SR
57.0 ±1.5
36.0 ±1.0
20.0 ±0.5
139.5
Bare
—
—
X
S15H
—
ESD-R-31SR-P
32.0 Maximum
19.0 Minimum
16.0 Maximum
32.9
Coated
Gray
—
X
S15H
—
ESD-R-38SR-P
39.5 Maximum
18.0 Minimum
14.0 Maximum
53.3
Coated
Gray
—
X
S15H
—
ESD-R-47SR-P
48.5 Maximum
26.0 Minimum
16.0 Maximum
84.3
Coated
Gray
—
X
S15H
—
ESD-R-57SR-P
59.0 Maximum
34.0 Minimum
21.0 Maximum
141.5
Coated
Gray
—
X
S15H
—
ESD-R-47SRH
51.0 Maximum
24.4 ±1.0
19.0 Maximum
92.0
Case
White with blue tape
—
X
S18H
—
1
Frequency range is for reference only. Please test with actual device before use.
Impedance vs. Frequency
Bare Type