Document 141-1
Common Mode Line Chokes – EE Styles
• 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
2
4
Typical Application
2
0.005 µF
AC
input
0.1 µF
0.005 µF
0.1 µF
4
9
7
9
7
Specifications subject to change without notice.
Please check our website for latest information.
Document 141-1
Revised 02/06/06
© Coilcraft, Inc. 2007
Document 141-2
Common Mode Line Chokes – EE Styles
Standard EE Line Chokes
Part
number
E3490-AL
E3491-AL
E3492-AL
E3493-AL
E3494-AL
E3495-AL
E3496-AL
E3497-AL
E3498-AL
Current
rating
1
500 mA
750 mA
1A
1¼ A
1½ A
2A
2½ A
3A
4A
DCR max
2
(Ohms)
0.980
0.390
0.270
0.190
0.105
0.069
0.044
0.029
0.016
Inductance
3
min
9.9 mH
3.9
2.9
2.1
1.1
731 µH
468
299
168
0.950
max
24,13
0.15 ±0.030
3,81 ±0,762
0.032
dia ref
0,813
0.40
10,16
0.155
ref
3,937
1.10
max
27,94
0.079
min
2,00
9
7
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.
2
4
0.62 ±0.015
15,75 ±0,38
1.10 max
27,94
Weight:
Terminations:
19 – 33.8 g
Tin-silver over tin over copper
Standard EE Line Chokes – High Inductance
Part
number
E3499-AL
E3500-AL
E3501-AL
E3502-AL
E3503-AL
E3504-AL
E3505-AL
E3506-AL
E3507-AL
Current
rating
1
500 mA
750 mA
1A
1¼ A
1½ A
2A
2½ A
3A
4A
DCR max
2
(Ohms)
1.260
0.500
0.350
0.230
0.130
0.087
0.055
0.037
0.022
Inductance
3
min
16.8 mH
6.6
4.9
3.6
1.87
1.24
796 µH
508
286
1.20
max
30,48
0.15 ±0.030
3,81 ±0,762
0.032
dia ref
0,813
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.
0.40
10,16
0.155
ref
3,937
1.10
max
27,94
0.079
min
2,00
9
7
2
4
0.62 ±0.015
15,75 ±0,38
1.10 max
27,94
For custom values or information on toroidal common mode line
chokes, please contact Coilcraft.
Weight:
Terminations:
19 – 33.8 g
Tin-silver over tin over copper
Specifications subject to change without notice.
Please check our website for latest information.
Document 141-2
Revised 02/14/06
© Coilcraft, Inc. 2007
PCB Design
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