Document 326-1
Common Mode Line Chokes – CMT
Coilcraft’s CMT toroid style common mode chokes are
designed to provide the highest common mode impedance
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 sup-
ply and return conductors with in-phase signals of equal
amplitude. Differential mode inductors are available for
filtering out-of-phase or uneven amplitude signals.
0.118
3,00
CMTs feature inductance values up to 125 mH and
Irms
ratings as high as 15 Amps.
• 1250 Vrms, one minute isolation between windings
• Industry standard footprint.
• Creepage and clearance = 3.2 mm
• UL1446 Class B (130°C) Insulation System
(UL File E83628)
Schematic
H max
CMTX-X.X-XL
XXXX
CC-3 Y
Recommended
PC Board Layout
4
1
4
Part
number
Internal
codes
1
2
Parts manufactured
prior to
September 2011
may be
marked differently.
X
3
2
3
Weights:
2
3
1
2
0.120/0.180
3,05/4,57
L max
W max
CMT1: 13.3 – 25.5 g;
CMT2: 20.7– 41.7 g;
CMT3: 42.5 – 77.2 g;
CMT4: 115 – 117 g
Terminations:
Tin-silver over copper
Y
CMT-1 Series
Part
number
CMT1-5.0-1L
CMT1-8.0-1L
CMT1-15.0-1L
CMT1-2.5-2L
CMT1-4.0-2L
CMT1-7.5-2L
CMT1-1.3-4L
CMT1-2.1-4L
CMT1-3.7-4L
CMT1-1.0-6L
CMT1-1.7-6L
CMT1-3.0-6L
CMT1-.6-9L
CMT1-1.1-9L
CMT1-1.9-9L
CMT1-.5-12L
CMT1-.8-12L
CMT1-1.4-12L
CMT1-.3-15L
CMT1-.6-15L
CMT1-1.1-15L
1.
2.
3.
4.
5.
Leakage
L min
1
Irms
inductance
2
DCR max
3
(mH)
(A)
max (µH)
(Ohms)
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
Lead
X
Y
diameter
±0.01/0,25 ±0.01/0,25
nom
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
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
PC board
hole
diameter
0.091/2,32
0.091/2,32
0.091/2,32
0.091/2,32
0.091/2,32
0.091/2,32
0.091/2,32
0.091/2,32
0.091/2,32
0.091/2,32
0.091/2,32
0.091/2,32
0.071/1,80
0.071/1,80
0.071/1,80
0.081/2,06
0.081/2,06
0.081/2,06
0.091/2,32
0.091/2,32
0.091/2,32
Inductance is per winding, tested at 15.75 kHz, 0 Adc.
Leakage inductance is measured from pin 1 to pin 4 with pins 2 and 3 shorted.
DCR is per winding.
Operating temperature range –40°C to +85°C.
Electrical specifications at 25°C.
US
+1-847-639-6400 sales@coilcraft.com
UK
+44-1236-730595 sales@coilcraft-europe.com
Taiwan
+886-2-2264 3646 sales@coilcraft.com.tw
China
+86-21-6218 8074 sales@coilcraft.com.cn
Singapore
+ 65-6484 8412 sales@coilcraft.com.sg
Document 326-1
Revised 05/21/12
© Coilcraft Inc. 2013
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
Document 326-2
Common Mode Line Chokes – CMT Series
0.118
3,00
Schematic
H max
CMTX-X.X-XL
XXXX
CC-3 Y
Recommended
PC Board Layout
4
1
4
Part
number
Internal
codes
1
2
Parts manufactured
prior to
September 2011
may be
marked differently.
X
3
2
3
Weights:
2
3
1
2
0.120/0.180
3,05/4,57
L max
W max
CMT1: 13.3 – 25.5 g;
CMT2: 20.7– 41.7 g;
CMT3: 42.5 – 77.2 g;
CMT4: 115 – 117 g
Terminations:
Tin-silver over copper
Y
CMT-2 Series
Part
number
CMT2-7.5-1L
CMT2-13-1L
CMT2-3.8-2L
CMT2-6.5-2L
CMT2-1.9-4L
CMT2-3.3-4L
CMT2-1.5-6L
CMT2-2.6-6L
CMT2-.9-9L
CMT2-1.5-9L
CMT2-.7-12L
CMT2-1.2-12L
CMT2-.5-15L
CMT2-.8-15L
1.
2.
3.
4.
5.
Leakage
L min
1
Irms
inductance
2
DCR max
3
(mH)
(A)
max (µH)
(Ohms)
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
Lead
X
Y
diameter
±0.01/0,25 ±0.01/0,25
nom
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
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
PC board
hole
diameter
0.091/2,32
0.091/2,32
0.091/2,32
0.091/2,32
0.091/2,32
0.091/2,32
0.091/2,32
0.091/2,32
0.071/1,80
0.071/1,80
0.081/2,06
0.081/2,06
0.091/2,32
0.091/2,32
Inductance is per winding, tested at 15.75 kHz, 0 Adc.
Leakage inductance is measured from pin 1 to pin 4 with pins 2 and 3 shorted.
DCR is per winding.
Operating temperature range –40°C to +85°C.
Electrical specifications at 25°C.
CMT-3 Series
Part
number
CMT3-32-1L
CMT3-56-1L
CMT3-16-2L
CMT3-28-2L
CMT3-8-4L
CMT3-14-4L
CMT3-6.6-6L
CMT3-11.5-6L
CMT3-4-9L
CMT3-7-9L
CMT3-3-12L
CMT3-5.2-12L
CMT3-2.5-15L
CMT3-4.4-15L
1.
2.
3.
4.
5.
Leakage
L min
1
Irms
inductance
2
DCR max
3
(mH)
(A)
max (µH)
(Ohms)
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
1.0
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
Lead
X
Y
diameter
±0.01/0,25 ±0.01/0,25
nom
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
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
PC board
hole
diameter
0.091/2,32
0.091/2,32
0.091/2,32
0.091/2,32
0.091/2,32
0.091/2,32
0.091/2,32
0.091/2,32
0.071/1,80
0.071/1,80
0.081/2,06
0.081/2,06
0.091/2,32
0.091/2,32
Inductance is per winding, tested at 15.75 kHz, 0 Adc.
Leakage inductance is measured from pin 1 to pin 4 with pins 2 and 3 shorted.
DCR is per winding.
Operating temperature range –40°C to +85°C.
Electrical specifications at 25°C.
US
+1-847-639-6400 sales@coilcraft.com
UK
+44-1236-730595 sales@coilcraft-europe.com
Taiwan
+886-2-2264 3646 sales@coilcraft.com.tw
China
+86-21-6218 8074 sales@coilcraft.com.cn
Singapore
+ 65-6484 8412 sales@coilcraft.com.sg
Document 326-2
Revised 05/21/12
© Coilcraft Inc. 2013
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
Document 326-3
Common Mode Line Chokes – CMT Series
0.118
3,00
Schematic
H max
CMTX-X.X-XL
XXXX
CC-3 Y
Recommended
PC Board Layout
4
1
4
Part
number
Internal
codes
1
2
Parts manufactured
prior to
September 2011
may be
marked differently.
X
3
2
3
Weights:
2
3
1
2
0.120/0.180
3,05/4,57
L max
W max
CMT1: 13.3 – 25.5 g;
CMT2: 20.7– 41.7 g;
CMT3: 42.5 – 77.2 g;
CMT4: 115 – 117 g
Terminations:
Tin-silver over copper
Y
CMT-4 Series
Part
number
CMT4-72-1L
72.0
CMT4-125-1L 125.0
CMT4-36-2L
36.0
CMT4-62-2L
62.0
CMT4-19-4L
19.0
CMT4-32-4L
32.0
CMT4-15-6L
15.0
CMT4-26-6L
26.0
CMT4-10-9L
10.0
CMT4-17-9L
17.0
CMT4-7.5-12L
7.5
CMT4-13-12L
13.0
CMT4-6-15L
6.0
CMT4-10-15L
10.0
1.
2.
3.
4.
5.
Leakage
L min
1
Irms
inductance
2
DCR max
3
(mH)
(A)
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
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
2.280/57,9
2.200/55,9
2.250/57,2
2.250/57,2
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
2.300/58,4
2.250/57,2
2.300/58,4
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
Lead
X
Y
diameter
±0.01/0,25 ±0.01/0,25
nom
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
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
PC board
hole
diameter
0.091/2,32
0.091/2,32
0.091/2,32
0.091/2,32
0.091/2,32
0.091/2,32
0.091/2,32
0.091/2,32
0.071/1,80
0.071/1,80
0.081/2,06
0.081/2,06
0.091/2,32
0.091/2,32
Inductance is per winding, tested at 15.75 kHz, 0 Adc.
Leakage inductance is measured from pin 1 to pin 4 with pins 2 and 3 shorted.
DCR is per winding.
Operating temperature range –40°C to +85°C.
Electrical specifications at 25°C.
US
+1-847-639-6400 sales@coilcraft.com
UK
+44-1236-730595 sales@coilcraft-europe.com
Taiwan
+886-2-2264 3646 sales@coilcraft.com.tw
China
+86-21-6218 8074 sales@coilcraft.com.cn
Singapore
+ 65-6484 8412 sales@coilcraft.com.sg
Document 326-3
Revised 05/21/12
© Coilcraft Inc. 2013
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
Document 326-4
Common Mode Line Chokes – CMT Series
Typical Common Mode Attenuation
(Ref: 50 Ohms)
CMT1 and CMT2
CMT3 and CMT4
US
+1-847-639-6400 sales@coilcraft.com
UK
+44-1236-730595 sales@coilcraft-europe.com
Taiwan
+886-2-2264 3646 sales@coilcraft.com.tw
China
+86-21-6218 8074 sales@coilcraft.com.cn
Singapore
+ 65-6484 8412 sales@coilcraft.com.sg
Document 326-4
Revised 05/21/12
© Coilcraft Inc. 2013
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
Document 326-5
Common Mode Line Chokes – CMT Series
Typical Impedance
CMT1 and CMT2
CMT3 and CMT4
US
+1-847-639-6400 sales@coilcraft.com
UK
+44-1236-730595 sales@coilcraft-europe.com
Taiwan
+886-2-2264 3646 sales@coilcraft.com.tw
China
+86-21-6218 8074 sales@coilcraft.com.cn
Singapore
+ 65-6484 8412 sales@coilcraft.com.sg
Document 326-5
Revised 05/21/12
© Coilcraft Inc. 2013
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
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