© Coilcraft, Inc. 2007
Specifications subject to change without notice.
Please check our website for latest information.
Common Mode Line Chokes – EE Styles
Document 141-1
Document 141-1 Revised 02/06/06
Low cost
VDE, IEC, UL, CSA compliant
3750 Vrms isolation between windings
Constructed with UL approved Class 130°C insula-
tion system (UL File E83628)
Industry-standard EE25 size
Wide range of available inductances and current
ratings
Coilcraft Designer’s Kit No. P402 contains samples of
eight standard EE and toroidal common mode line
chokes. To order, contact Coilcraft or purchase on-line
at http://order.coilcraft.com.
Coilcraft common mode standard packages incorpo-
rate several features to help meet the requirements of
all major international safety agencies. These include
2 mm thick center flanges and 3 mm creepage and
clearance from all terminations to the core.
Common mode chokes are used to reduce AC line
conducted interference produced by switching power
supplies. This configuration produces opposing mag-
netic fluxes in the core that serve to cancel in-phase
noise signals appearing across the AC line.
This mode allows much more filtering capability in a
given core size than would be possible using differen-
tial filtering alone. Use of common mode chokes there-
fore reduces component count as well as inductor size.
Combining both common and differential mode chokes
gives the power supply designer the added flexibility
required to adjust the filtering to meet FCC, VDE, and
other requirements as well as optimize the circuit for
the particular noise levels and frequencies produced by
each power supply design.
The Coilcraft packaging of common mode chokes al-
lows windings to be balanced within 1% and features
the cost effectiveness of standard EE core styles.
Schematic Typical Application
AC
input
2 2
99
4 4
77
0.1 µF 0.1 µF
0.005 µF
0.005 µF
© Coilcraft, Inc. 2007
Common Mode Line Chokes – EE Styles
Specifications subject to change without notice.
Please check our website for latest information.
Document 141-2
Document 141-2 Revised 02/14/06
Standard EE Line Chokes
Standard EE Line Chokes – High Inductance
Part Current DCR max2Inductance3
number rating1(Ohms) min
E3490-AL 500 mA 0.980 9.9 mH
E3491-AL 750 mA 0.390 3.9
E3492-AL 1 A 0.270 2.9
E3493-AL 1¼ A 0.190 2.1
E3494-AL 1½ A 0.105 1.1
E3495-AL 2 A 0.069 731 µH
E3496-AL 2½ A 0.044 468
E3497-AL 3 A 0.029 299
E3498-AL 4 A 0.016 168
1. Based on 300 circular mils/Amp. Temperature rise is less than 10°C.
2. DCR is maximum per winding.
3. Per section. Typical values are approximately 30% higher than published
minimums.
4. Operating temperature range –40°C to +85°C.
5. Electrical specifications at 25°C.
6. Parts in bold type are included in Coilcraft Designer’s Kit No. P402.
Part Current DCR max2Inductance3
number rating1(Ohms) min
E3499-AL 500 mA 1.260 16.8 mH
E3500-AL 750 mA 0.500 6.6
E3501-AL 1 A 0.350 4.9
E3502-AL 1¼ A 0.230 3.6
E3503-AL 1½ A 0.130 1.87
E3504-AL 2 A 0.087 1.24
E3505-AL 2½ A 0.055 796 µH
E3506-AL 3 A 0.037 508
E3507-AL 4 A 0.022 286
1. Based on 300 circular mils/Amp. Temperature rise is less than 10°C.
2. DCR is maximum per winding.
3. Per section. Typical values are approximately 30% higher than
published minimums.
4. Operating temperature range –40°C to +85°C.
5. Electrical specifications at 25°C.
0.15 ±0.030
3,81 ±0,762
0.62 ±0.015
15,75 ±0,38
0.950
24,13
0.032
0,813
0.40
10,16
0.155
3,937
1.10
27,94
1.10
27,94
max
max
dia ref
max
min
ref
0.079
2,00
2
9
4
7
0.15 ±0.030
3,81 ±0,762
0.62 ±0.015
15,75 ±0,38
1.20
30,48
0.032
0,813
0.40
10,16
0.155
3,937
1.10
27,94
1.10
27,94
max
max
dia ref
max
min
ref
0.079
2,00
2
9
4
7
For custom values or information on toroidal common mode line
chokes, please contact Coilcraft.
Weight: 19 – 33.8 g
Terminations: Tin-silver over tin over copper
Weight: 19 – 33.8 g
Terminations: Tin-silver over tin over copper