Document 326-1
Common Mode Line Chokes - CMT Series
Coilcraft’s CMT toroid style common mode chokes are
designed to provide the highest common mode imped-
ance over the widest frequency range. These parts are
ideal for any application requiring a high DC current bias
and are well suited for use in switch-mode power supplies.
Common mode chokes are most effective in filtering
supply and return conductors with in-phase signals of
equal amplitude. Differential mode inductors are available
for filtering out-of-phase or uneven amplitude signals.
CMTs feature inductance values up to 125 mH and
Irms
ratings as high as 15 Amps.
• 1250 Vrms isolation between windings
• Industry standard footprint.
• IEC, UL, and VDE compliant.
CMT-1 Series
Current Leakage
Part
Inductance
1
rating inductance DCR max
number min (mH)
(Arms) max (µH)
(Ohms)
CMT1-5.0-1
CMT1-8.0-1
CMT1-15.0-1
CMT1-2.5-2
CMT1-4.0-2
CMT1-7.5-2
CMT1-1.3-4
CMT1-2.1-4
CMT1-3.7-4
CMT1-1.0-6
CMT1-1.7-6
CMT1-3.0-6
CMT1-.6-9
CMT1-1.1-9
CMT1-1.9-9
CMT1-.5-12
CMT1-.8-12
CMT1-1.4-12
CMT1-.3-15
CMT1-.6-15
CMT1-1.1-15
5.0
8.0
15.0
2.5
4.0
7.5
1.3
2.1
3.7
1.0
1.7
3.0
0.6
1.1
1.9
0.5
0.8
1.4
0.3
0.6
1.1
1.0
1.0
1.0
2.0
2.0
2.0
4.0
4.0
4.0
6.0
6.0
6.0
9.0
9.0
9.0
12.0
12.0
12.0
15.0
15.0
15.0
80
125
233
42
70
74
20
36
40
19
34
35
11
12
20
9
9
16
6
6.5
13.7
0.207
0.270
0.430
0.090
0.095
0.108
0.029
0.040
0.036
0.022
0.032
0.027
0.012
0.013
0.017
0.008
0.008
0.011
0.005
0.006
0.008
H
max
1.100/27,9
1.100/27,9
1.155/29,4
1.100/27,9
1.050/26,7
1.155/29,4
1.100/27,9
1.100/27,9
1.125/28.6
1.100/27,9
1.155/29,4
1.200/30,5
1.200/30,5
1.300/33.0
1.300/33.0
1.200/30,5
1.200/30,5
1.300/33.0
1.300/33.0
1.250/31.8
1.250/31.8
L
max
1.210/30,7
1.210/30,7
1.300/33,0
1.210/30,7
1.210/30,7
1.300/33,0
1.210/30,7
1.210/30,7
1.300/33,0
1.210/30,7
1.300/33,0
1.210/30,7
1.210/30,7
1.210/30,7
1.400/35,6
1.210/30,7
1.210/30,7
1.210/30,7
1.210/30,7
1.210/30,7
1.210/30,7
W
max
0.625/15,9
0.625/15,9
0.625/15,9
0.625/15,9
0.625/15,9
0.625/15,9
0.625/15,9
0.625/15,9
0.625/15,9
0.625/15,9
0.625/15,9
0.625/15,9
0.625/15,9
0.625/15,9
0.625/15,9
0.650/16,5
0.650/16,5
0.650/16,5
0.625/15,9
0.650/16,5
0.700/17,8
X
Y
±0.01/0,25 ±0.01/0,25
0.80/20,3
0.80/20,3
0.80/20,3
0.80/20,3
0.80/20,3
0.80/20,3
0.80/20,3
0.80/20,3
0.80/20,3
0.80/20,3
0.80/20,3
0.80/20,3
0.80/20,3
0.80/20,3
0.80/20,3
0.80/20,3
0.80/20,3
0.80/20,3
0.80/20,3
0.80/20,3
0.80/20,3
0.40/10,2
0.40/10,2
0.40/10,2
0.40/10,2
0.40/10,2
0.40/10,2
0.40/10,2
0.40/10,2
0.40/10,2
0.40/10,2
0.40/10,2
0.40/10,2
0.40/10,2
0.40/10,2
0.40/10,2
0.40/10,2
0.40/10,2
0.40/10,2
0.40/10,2
0.40/10,2
0.40/10,2
Lead
diameter
nom
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.042/1,07
0.042/1,07
0.042/1,07
0.048/1,22
0.048/1,22
0.048/1,22
0.054/1,37
0.054/1,37
0.054/1,37
1. Inductance tested at 15.75 kHz 0 Adc.
2. Operating temperature range –40°C to +85°C.
3. Electrical specifications at 25°C.
Specifications subject to change without notice.
Please check our website for latest information. Document 326-1
Revised 08/19/04
© Coilcraft, Inc. 2005
Document 326-2
Common Mode Line Chokes – CMT Series
CMT-2 Series
Current Leakage
Part
Inductance
1
rating inductance DCR max
number min (mH)
(Arms) max (µH)
(Ohms)
CMT2-7.5-1
CMT2-13-1
CMT2-3.8-2
CMT2-6.5-2
CMT2-1.9-4
CMT2-3.3-4
CMT2-1.5-6
CMT2-2.6-6
CMT2-.9-9
CMT2-1.5-9
CMT2-.7-12
CMT2-1.2-12
CMT2-.5-15
CMT2-.8-15
7.5
13.0
3.8
6.5
1.9
3.3
1.5
2.6
0.9
1.5
0.7
1.2
0.5
0.8
1.0
1.0
2.0
2.0
4.0
4.0
6.0
6.0
9.0
9.0
12.0
12.0
15.0
15.0
90
190
48
98
26
45
21
41
17
15
14
14
8.7
10
0.270
0.415
0.106
0.145
0.038
0.055
0.029
0.040
0.014
0.013
0.011
0.011
0.007
0.007
H
max
1.100/27,9
1.300/33,0
1.100/27,9
1.300/33,0
1.100/27,9
1.300/33,0
1.100/27,9
1.400/35,6
1.200/30,5
1.250/31,8
1.200/30,5
1.200/30,5
1.300/33.0
1.200/30,5
L
max
1.310/33,3
1.310/33,3
1.310/33,3
1.310/33,3
1.310/33,3
1.310/33,3
1.310/33,3
1.400/35,6
1.310/33,3
1.250/31,8
1.250/31,8
1.250/31,8
1.300/33,0
1.250/31,8
W
max
0.825/21,0
0.825/21,0
0.825/21,0
0.825/21,0
0.825/21,0
0.825/21,0
0.825/21,0
0.900/22,9
0.825/21,0
0.825/21,0
0.825/21,0
0.825/21,0
0.825/21,0
0.825/21,0
X
Y
±0.01/0,25 ±0.01/0,25
0.90/22,9
0.90/22,9
0.90/22,9
0.90/22,9
0.90/22,9
0.90/22,9
0.90/22,9
0.90/22,9
0.90/22,9
0.90/22,9
0.90/22,9
0.90/22,9
0.90/22,9
0.90/22,9
0.60/15,2
0.60/15,2
0.60/15,2
0.60/15,2
0.60/15,2
0.60/15,2
0.60/15,2
0.60/15,2
0.60/15,2
0.60/15,2
0.60/15,2
0.60/15,2
0.60/15,2
0.60/15,2
Lead
diameter
nom
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.042/1,07
0.042/1,07
0.048/1,22
0.048/1,22
0.054/1,37
0.054/1,37
1. Inductance tested at 15.75 kHz 0 Adc.
2. Operating temperature range –40°C to +85°C.
3. Electrical specifications at 25°C.
CMT-3 Series
Part
Inductance
number min (mH)
CMT3-32-1
CMT3-56-1
CMT3-16-2
CMT3-28-2
CMT3-8-4
CMT3-14-4
CMT3-6.6-6
CMT3-11.5-6
CMT3-4-9
CMT3-7-9
CMT3-3-12
CMT3-5.2-12
CMT3-2.5-15
CMT3-4.4-15
32.0
56.0
16.0
28.0
8.0
14.0
6.6
11.5
4.0
7.0
3.0
5.2
2.5
4.4
1
Current Leakage
rating inductance DCR max
(Arms) max (µH)
(Ohms)
1.0
1.0
2.0
2.0
4.0
4.0
6.0
6.0
9.0
9.0
12.0
12.0
15.0
15.0
485
780
210
410
57.5
180
49
140
37
104
40
47
42
48
0.650
0.900
0.240
0.330
0.061
0.120
0.048
0.088
0.026
0.045
0.022
0.025
0.019
0.017
H
max
1.400/35,6
1.650/41,9
1.400/35,6
1.650/41,9
1.350/34,3
1.700/43,2
1.400/35,6
1.700/43,2
1.400/35,6
1.760/44,7
1.700/43,2
1.700/43,2
1.750/44,5
1.700/43,2
L
max
1.650/41,9
1.650/41,9
1.650/41,9
1.650/41,9
1.650/41,9
1.650/41,9
1.600/40,6
1.650/41,9
1.450/36,8
1.760/44,7
1.700/43,2
1.700/43,2
1.750/44,5
1.700/43,2
W
max
0.925/23,5
0.925/23,5
0.925/23,5
0.925/23,5
0.925/23,5
0.950/24,1
0.925/23,5
0.925/23,5
0.925/23,5
0.975/24,8
0.950/24,1
1.000/25,4
1.000/25,4
1.000/25,4
X
Y
±0.01/0,25 ±0.01/0,25
1.20/30,5
1.20/30,5
1.20/30,5
1.20/30,5
1.20/30,5
1.20/30,5
1.20/30,5
1.20/30,5
1.20/30,5
1.20/30,5
1.20/30,5
1.20/30,5
1.20/30,5
1.20/30,5
0.70/17,8
0.70/17,8
0.70/17,8
0.70/17,8
0.70/17,8
0.70/17,8
0.70/17,8
0.70/17,8
0.70/17,8
0.70/17,8
0.70/17,8
0.70/17,8
0.70/17,8
0.70/17,8
Lead
diameter
nom
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.042/1,07
0.042/1,07
0.048/1,22
0.048/1,22
0.054/1,37
0.054/1,37
1. Inductance tested at 15.75 kHz 0 Adc.
2. Operating temperature range –40°C to +85°C.
3. Electrical specifications at 25°C.
Specifications subject to change without notice.
Please check our website for latest information. Document 326-2
Revised 01/15/04
© Coilcraft, Inc. 2005
Document 326-3
Common Mode Line Chokes – CMT Series
CMT-4 Series
Current Leakage
Part
Inductance
1
rating inductance DCR max
number min (mH)
(Arms) max (µH)
(Ohms)
CMT4-72-1
CMT4-125-1
CMT4-36-2
CMT4-62-2
CMT4-19-4
CMT4-32-4
CMT4-15-6
CMT4-26-6
CMT4-10-9
CMT4-17-9
CMT4-7.5-12
CMT4-13-12
CMT4-6-15
CMT4-10-15
72.0
125.0
36.0
62.0
19.0
32.0
15.0
26.0
10.0
17.0
7.5
13.0
6.0
10.0
1.0
1.0
2.0
2.0
4.0
4.0
6.0
6.0
9.0
9.0
12.0
12.0
15.0
15.0
1400
1400
680
750
350
370
275
320
190
220
140
155
111
122
1.150
1.150
0.415
0.415
0.150
0.158
0.114
0.115
0.057
0.062
0.042
0.043
0.030
0.029
H
max
2.100/53,3
2.200/55,9
2.215/56,3
2.200/55,9
2.200/55,9
2.200/55,9
2.200/55,9
2.225/56,5
2.200/55,9
2.280/47,9
2.200/55,9
2.250/57,2
2.200/55,9
2.280/57,9
L
max
2.100/53,3
2.150/54,6
2.150/54,6
2.150/54,6
2.180/55,4
2.180/55,4
2.180/55,4
2.180/55,4
2.180/55,4
2.250/57,2
2.250/57,2
2.300/48,4
2.250/57,2
2.300/48,4
W
max
1.130/28,7
1.130/28,7
1.130/28,7
1.130/28,7
1.130/28,7
1.130/28,7
1.130/28,7
1.130/28,7
1.130/28,7
1.150/29,2
1.130/28,7
1.130/28,7
1.150/29,2
1.130/28,7
X
Y
±0.01/0,25 ±0.01/0,25
1.50/38,1
1.50/38,1
1.50/38,1
1.50/38,1
1.50/38,1
1.50/38,1
1.50/38,1
1.50/38,1
1.50/38,1
1.50/38,1
1.50/38,1
1.50/38,1
1.50/38,1
1.50/38,1
0.90/22,9
0.90/22,9
0.90/22,9
0.90/22,9
0.90/22,9
0.90/22,9
0.90/22,9
0.90/22,9
0.90/22,9
0.90/22,9
0.90/22,9
0.90/22,9
0.90/22,9
0.90/22,9
Lead
diameter
nom
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.054/1,37
0.042/1,07
0.042/1,07
0.048/1,22
0.048/1,22
0.054/1,37
0.054/1,37
1. Inductance tested at 15.75 kHz 0 Adc.
2. Operating temperature range –40°C to +85°C.
3. Electrical specifications at 25°C.
Specifications subject to change without notice.
Please check our website for latest information. Document 326-3
Revised 03/14/05
© Coilcraft, Inc. 2005
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