Document 326-1
CommonModeLineChokes
-
CMTSeries
equalamplitude.Differentialmodeinductorsareavailable
for filtering out-of-phase or uneven amplitude signals.
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
andarewellsuitedforuseinswitch-modepowersupplies.
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.
Common mode chokes are most effective in filtering
supply and return conductors with in-phase signals of
CMT-1 Series
Current Leakage
Lead
diameter
nom
Part
Inductance1 rating inductance DCRmax
H
max
L
max
W
max
X
Y
number min (mH)
(Arms) max (µH)
(Ohms)
±±0±ꢀ1±ꢁ,2 ±±0±ꢀ1±ꢁ,2
CMT1-5.0-1
CMT1-8.0-1
CMT1-15.0-1
5.0
8.0
15.0
1.0
1.0
1.0
80
125
233
0.207
0.270
0.430
1.100/27,9 1.210/30,7 0.625/15,9
1.100/27,9 1.210/30,7 0.625/15,9
1.155/29,4 1.300/33,0 0.625/15,9
0.80/20,3 0.40/10,2 0.054/1,37
0.80/20,3 0.40/10,2 0.054/1,37
0.80/20,3 0.40/10,2 0.054/1,37
CMT1-2.5-2
CMT1-4.0-2
CMT1-7.5-2
2.5
4.0
7.5
2.0
2.0
2.0
42
70
74
0.090
0.095
0.108
1.100/27,9 1.210/30,7 0.625/15,9
1.050/26,7 1.210/30,7 0.625/15,9
1.155/29,4 1.300/33,0 0.625/15,9
0.80/20,3 0.40/10,2 0.054/1,37
0.80/20,3 0.40/10,2 0.054/1,37
0.80/20,3 0.40/10,2 0.054/1,37
CMT1-1.3-4
CMT1-2.1-4
CMT1-3.7-4
1.3
2.1
3.7
4.0
4.0
4.0
20
36
40
0.029
0.040
0.036
1.100/27,9 1.210/30,7 0.625/15,9
1.100/27,9 1.210/30,7 0.625/15,9
1.125/28.6 1.300/33,0 0.625/15,9
0.80/20,3 0.40/10,2 0.054/1,37
0.80/20,3 0.40/10,2 0.054/1,37
0.80/20,3 0.40/10,2 0.054/1,37
CMT1-1.0-6
CMT1-1.7-6
CMT1-3.0-6
1.0
1.7
3.0
6.0
6.0
6.0
19
34
35
0.022
0.032
0.027
1.100/27,9 1.210/30,7 0.625/15,9
1.155/29,4 1.300/33,0 0.625/15,9
1.200/30,5 1.210/30,7 0.625/15,9
0.80/20,3 0.40/10,2 0.054/1,37
0.80/20,3 0.40/10,2 0.054/1,37
0.80/20,3 0.40/10,2 0.054/1,37
CMT1-.6-9
CMT1-1.1-9
CMT1-1.9-9
0.6
1.1
1.9
9.0
9.0
9.0
11
12
20
0.012
0.013
0.017
1.200/30,5 1.210/30,7 0.625/15,9
1.300/33.0 1.210/30,7 0.625/15,9
1.300/33.0 1.400/35,6 0.625/15,9
0.80/20,3 0.40/10,2 0.042/1,07
0.80/20,3 0.40/10,2 0.042/1,07
0.80/20,3 0.40/10,2 0.042/1,07
CMT1-.5-12
CMT1-.8-12
CMT1-1.4-12
0.5
0.8
1.4
12.0
12.0
12.0
9
9
16
0.008
0.008
0.011
1.200/30,5 1.210/30,7 0.650/16,5
1.200/30,5 1.210/30,7 0.650/16,5
1.300/33.0 1.210/30,7 0.650/16,5
0.80/20,3 0.40/10,2 0.048/1,22
0.80/20,3 0.40/10,2 0.048/1,22
0.80/20,3 0.40/10,2 0.048/1,22
CMT1-.3-15
CMT1-.6-15
CMT1-1.1-15
0.3
0.6
1.1
15.0
15.0
15.0
6
6.5
13.7
0.005
0.006
0.008
1.300/33.0 1.210/30,7 0.625/15,9
1.250/31.8 1.210/30,7 0.650/16,5
1.250/31.8 1.210/30,7 0.700/17,8
0.80/20,3 0.40/10,2 0.054/1,37
0.80/20,3 0.40/10,2 0.054/1,37
0.80/20,3 0.40/10,2 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