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Coilcraft |
www.DataSheet4U.com
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
For free evaluation samples, contact Coilcraft or visit
www.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
24
97
Typical Application
24
AC
input
0.1 µF
0.005 µF
0.005 µF
9
7
0.1 µF
© Coilcraft, Inc. 2006
Specifications subject to change without notice.
Please check our website for latest information.
Document 141-1 Revised 02/06/06
www.DataSheet4U.com
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
rating1
500 mA
750 mA
1A
1¼ A
1½ A
2A
2½ A
3A
4A
DCR max2
(Ohms)
0.980
0.390
0.270
0.190
0.105
0.069
0.044
0.029
0.016
Inductance3
min
9.9 mH
3.9
2.9
2.1
1.1
731 µH
468
299
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.
0.15 ±0.030
3,81 ±0,762
0.155
3,937
ref
1.10 max
27,94
0.079
2,00
min
0.40
10,16
24
97
1.10 max
27,94
Terminations: Tin-silver over tin over copper
0.950 max
24,13
0.032 dia ref
0,813
0.62 ±0.015
15,75 ±0,38
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
rating1
500 mA
750 mA
1A
1¼ A
1½ A
2A
2½ A
3A
4A
DCR max2
(Ohms)
1.260
0.500
0.350
0.230
0.130
0.087
0.055
0.037
0.022
Inductance3
min
16.8 mH
6.6
4.9
3.6
1.87
1.24
796 µH
508
286
0.15 ±0.030
3,81 ±0,762
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.
0.155 ref
3,937
1.10 max
27,94
0.079 min
2,00
1.20 max
30,48
0.032 dia ref
0,813
0.40
10,16
24
97
0.62 ±0.015
15,75 ±0,38
For custom values or information on toroidal common mode line
chokes, please contact Coilcraft.
1.10 max
27,94
Terminations: 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. 2006
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