Common-mode Suppression Chokes
n Rated currents up to 5A
n Broadband attenuation characteristics
n Low magnetic leakage flux
n UL rated materials
n RoHS compliant
Technical specifications
Maximum continuous operating voltage: 250VAC @ 50°C
Operating frequency: dc to 400Hz @ 50°C
Rated currents: 0.3 to 5A
Overcurrent: 1.5x Inominal for 1 minute, once per hour
High potential test voltage
winding-to-winding @ 25°C: 3000VAC, 60 sec, guaranteed
2000V, 50Hz, 2 sec, factory test
Temperature range (operation and storage): -25°C to +100°C (25/100/21)
Flammability corresponding to: UL 94V-0
Test conditions
Measuring frequency: 10kHz; 5mA < 16μH;
500μA > 16μH < 160μH;
50μA > 160μH > 16mH;
50mV > 16mH < 160mH
Inductance tolerance ±30%
Resistance: Tolerance max. ±15% @ 25°C; ≤ 20mΩ, 1A;
> 20mΩ ≤ 200mΩ, 100mA; > 200mΩ ≤ 2V, 10mA
Electrical characteristics: @ 25°C ±2°C
Typical applications
Common-mode suppression chokes are
mainly used to filter noise on AC power lines.
Noise on commercial power lines could enter
the equipment and disturb the proper
function. Noise generated by the equipment
for example from switch mode power
supplies need to be filtered and the spread of
such generated noise need to be suppressed.
Common-mode suppression chokes together
with line bypass capacitors building an AC
EMI suppression filter device.
n Rated currents up to 5A.
n Compact and light weight.
n Low magnetic leakage flux.
n Sectional winding.
n Standard foot print.
n Broad range of available inductances and
current ratings.
n Custom-specific versions.
n Schaffner offers you also EMI measure-
ment service to verify that your design will
pass the required safety standards.
n Input filters for switch mode power
supplies
n Filters to reduce leaking noise
n TVs, VCRs, multimedia and audio
equipment
n Office automation, communications and
other electronic devices
n Electric ballast
n AC/AC converters
Features and benefits
Typical electrical schematic
1
4
2
3
RFI suppression Chokes
EV/EH series
Per CISPR 17; 50Ω/50Ω asym
Typical choke attenuation
EV/EH 20 types EV/EH 24 types EV/EH 28 types EV/EH 35 types
EV choke EH choke L nominal DC resistance Rated current Weight
(±30%) R I (50°C)
[mH] [mΩ] [A] [g]
Choke selection table
EV 20-0.3-02-33M EH 20-0.3-02-33M 33 1780 0.3 10
EV 20-0.5-02-18M EH 20-0.5-02-18M 18 725 0.5 10
EV 20-0.8-02-5M6 EH 20-0.8-02-5M6 5.6 245 0.8 10
EV 20-1.0-02-3M9 EH 20-1.0-02-3M9 3.9 168 1.0 10
EV 20-1.2-02-3M3 EH 20-1.2-02-3M3 3.3 127 1.2 10
EV 20-1.5-02-1M8 EH 20-1.5-02-1M8 1.8 72 1.5 10
EV 20-2.0-02-0M8 EH 20-2.0-02-0M8 0.82 38 2.0 10
EV 24-0.5-02-44M EH 24-0.5-02-44M 44 1250 0.5 18
EV 24-0.8-02-18M EH 24-0.8-02-18M 18 438 0.8 18
EV 24-1.0-02-10M EH 24-1.0-02-10M 10 244 1.0 18
EV 24-1.5-02-4M5 EH 24-1.5-02-4M5 4.5 116 1.5 18
EV 24-2.0-02-2M5 EH 24-2.0-02-2M5 2.5 62 2.0 18
EV 24-3.0-02-1M2 EH 24-3.0-02-1M2 1.2 29 3.0 18
EV 24-4.0-02-0M5 EH 24-4.0-02-0M5 0.5 16 4.0 18
EV 28-1.0-02-36M EH 28-1.0-02-36M 36 591 1.0 31
EV 28-1.5-02-20M EH 28-1.5-02-20M 20 282 1.5 31
EV 28-2.0-02-11M EH 28-2.0-02-11M 11 162 2.0 31
EV 28-3.0-02-5M0 EH 28-3.0-02-5M0 5 79 3.0 31
EV 28-4.0-02-2M3 EH 28-4.0-02-2M3 2.3 40 4.0 31
EV 28-5.0-02-1M1 EH 28-5.0-02-1M1 1.1 27 5.0 31
EV 35-1.0-02-90M EH 35-1.0-02-90M 90 628 1.0 70
EV 35-2.0-02-20M EH 35-2.0-02-20M 20 150 2.0 70
EV 35-3.0-02-10M EH 35-3.0-02-10M 10 72 3.0 70
EV 35-4.0-02-5M0 EH 35-4.0-02-5M0 5 53 4.0 70
EV 35-5.0-02-3M6 EH 35-5.0-02-3M6 3.6 33 5.0 70
All wires rated 130°C or higher.
> Components > EV/EH series
Mechanical data
EV 20 EV 24 and 28
EH 20 to 35
EV 35
A
C
B
D
4
E
G
F
1
2 3 A
C
B
D
4
E
G
F
1
23
A
C
B
D
4
EG
F
1
2 3
A
C
B
D
4
E
G
F
1
2 3
EV 20 EV 24 EV 28 EV 35 EH 20 EH 24 EH 28 EH35 Tolerances
Dimensions
A 21 24.6 29.2 36 21 24 28 36 ±1
B 16 17.4 21 24.5 21 24 28 36 ±1
C 25* 29.1 34.7 42.7 17.8 20 22.9 27.7 ±1
D 4 4 4 4 4 4 4 4 ±1
E Ø0.8 Ø0.8 Ø0.8 Ø1.2 Ø0.8 Ø0.8 Ø0.8 Ø1.0 ±0.1
F 13 13 13 21 13 21 24 30 ±0.5
G 10 10 10 15 10 15 20 25 ±0.5
All dimensions in mm; 1 inch = 25.4mm
* Tolarance is +1/-2mm
> Components > EV/EH series
Your local partner: To find your local partner within Schaffner’s global network, please go to www.schaffner.com June 2011
To find your local partner within
Schaffner‘s global network, please go to
www.schaffner.com
June 2011
© 2011 Schaffner EMC.
Specifications subject to change without
notice. All trademarks recognized.
Schaffner is an ISO-registered company.
Its products are designed and manufac-
tured under the strict quality and environ-
mental requirements of the ISO 9001 and
ISO 14001 standards.
This document has been carefully
checked. However, Schaffner does not
assume any liability for errors or inac-
curacies.
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