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
0.118
3,00
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.
Recommended
Board Layout
4
1
4
Schematic
1
H max
2
CMT-X-X.X-XL
CCI XXXX
CC–3X
3
X
2
3
Weights:
1
2
2
3
L max
0.120/0.180
3,05/4,57
W max
CMT1: 13.3 – 25.5 g;
CMT2: 20.7– 41.7 g;
CMT3: 42.5 – 74.9 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.
L min
1
(mH)
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
Irms
(A)
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
Leakage
inductance
2
DCR max
max (µH)
(Ohms)
80
0.207
125
0.270
233
0.430
42
0.090
70
0.095
74
0.108
20
0.029
36
0.040
40
0.036
19
0.022
34
0.032
35
0.027
11
0.012
12
0.013
20
0.017
9
0.008
9
0.008
16
0.011
6
0.005
6.5
0.006
13.7
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
Lead
W
X
Y
diameter
max
±0.01/0,25 ±0.01/0,25
nom
0.625/15,9 0.80/20,3 0.40/10,2 0.054/1,37
0.625/15,9 0.80/20,3 0.40/10,2 0.054/1,37
0.625/15,9 0.80/20,3 0.40/10,2 0.054/1,37
0.625/15,9 0.80/20,3 0.40/10,2 0.054/1,37
0.625/15,9 0.80/20,3 0.40/10,2 0.054/1,37
0.625/15,9 0.80/20,3 0.40/10,2 0.054/1,37
0.625/15,9 0.80/20,3 0.40/10,2 0.054/1,37
0.625/15,9 0.80/20,3 0.40/10,2 0.054/1,37
0.625/15,9 0.80/20,3 0.40/10,2 0.054/1,37
0.625/15,9 0.80/20,3 0.40/10,2 0.054/1,37
0.625/15,9 0.80/20,3 0.40/10,2 0.054/1,37
0.625/15,9 0.80/20,3 0.40/10,2 0.054/1,37
0.625/15,9 0.80/20,3 0.40/10,2 0.042/1,07
0.625/15,9 0.80/20,3 0.40/10,2 0.042/1,07
0.625/15,9 0.80/20,3 0.40/10,2 0.042/1,07
0.650/16,5 0.80/20,3 0.40/10,2 0.048/1,22
0.650/16,5 0.80/20,3 0.40/10,2 0.048/1,22
0.650/16,5 0.80/20,3 0.40/10,2 0.048/1,22
0.625/15,9 0.80/20,3 0.40/10,2 0.054/1,37
0.650/16,5 0.80/20,3 0.40/10,2 0.054/1,37
0.700/17,8 0.80/20,3 0.40/10,2 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.
Operating temperature range –40°C to +85°C.
Electrical specifications at 25°C.
Specifications subject to change without notice.
Please check our website for latest information.
Document 326-1
Revised 08/20/08
© Coilcraft, Inc. 2009
COILCRAFT [ Coilcraft lnc. ]
