CMT-SERIES
Common Mode Inductors
(Through-Hole)
Description
RoHS
2002/95/EC
• Four sizes of through-hole off-line
common mode inductors
• Inductance range from 0.53 - 66 mH
• Current range up to 6.5 Amps
• Noise attenuation up to 68 dB
• Frequency range up to 6 MHz
• Meets UL94V-0 flammability standard
• Ferrite core material
Applications
• Protects AC input from effects of switching regulators
• Off-line power supplies
• EMI filters
• DC-DC converters
• Computer, TV, VCR, audio and office equipment
Environmental Data
• Storage temperature range: -40°C to +125°C
• Operating ambient temperature range: -40°C to +85°C
range is application specific. The internal “hot-spot”
temperature defines the maximum allowable currents,
which are limited to 130°C, including ambient.
Part Number
CMT1-1-R
CMT1-2-R
CMT1-3-R
CMT1-4-R
CMT1-5-R
CMT1-6-R
CMT1-7-R
CMT1-8-R
CMT1-9-R
CMT1-10-R
CMT2-1-R
CMT2-2-R
CMT2-3-R
CMT2-4-R
CMT2-5-R
CMT2-6-R
CMT2-7-R
CMT2-8-R
CMT2-9-R
CMT2-10-R
CMT3-1-R
CMT3-2-R
CMT3-3-R
CMT3-4-R
CMT3-5-R
CMT3-6-R
CMT4-1-R
CMT4-2-R
CMT4-3-R
CMT4-4-R
CMT4-5-R
CMT4-6-R
OCL
(mH) min
(1-2)
66.0
49.0
28.0
21
13
7.50
4.20
2.40
1.85
0.94
30
20
12
8.0
6.0
4.8
3.2
2.4
2.0
1.6
5.4
3.5
2.7
1.3
0.92
0.53
5.4
3.5
2.7
1.3
0.92
0.53
OCL
(mH) min
(4-3)
66.0
49.0
28.0
21
13
7.50
4.20
2.40
1.85
0.94
30
20
12
8.0
6.0
4.8
3.2
2.4
2.0
1.6
5.4
3.5
2.7
1.3
0.92
0.53
5.4
3.5
2.7
1.3
0.92
0.53
Definitions:
OCL = Open Circuit Inductance
DCR = Direct Current Resistance
Irms = rms current for 40°C max temperature rise at worst case ambient temperature
of 85°C
Packaging
• Supplied in bulk packaging
I rms.
Amperes
max
0.74
0.88
1.13
1.37
1.76
2.27
2.89
3.85
4.53
6.05
1.50
1.95
2.45
2.80
3.40
3.95
4.40
4.75
5.45
5.75
2.0
2.6
3.0
4.0
5.0
6.5
2.0
2.6
3.0
4.0
5.0
6.5
DCR (Ω) typ
@ 20°C
(1-2)
1.20
0.85
0.50
0.35
0.20
0.13
0.08
0.045
0.033
0.018
0.350
0.220
0.135
0.100
0.070
0.053
0.042
0.037
0.028
0.026
0.12
0.08
0.055
0.032
0.021
0.013
0.12
0.08
0.055
0.032
0.021
0.013
Electrical Characteristics:
OCL (1-2) 0.10Vrms, 10kHz, 0.0Adc: (See Chart)
OCL (4-3) 0.10Vrms, 10kHz, 0.0Adc: (See Chart)
DCR (1-2) typ @ 20°C: (See Chart)
DCR (4-3) typ @ 20°C: (See Chart)
Hipot rating: winding to winding: 2400 Vac for 1 second.
Turns Ratio: (1-2):(4-3) 1:1
DCR (Ω) typ
@ 20°C
(4-3)
1.20
0.85
0.50
0.35
0.20
0.13
0.08
0.045
0.033
0.018
0.350
0.220
0.135
0.100
0.070
0.053
0.042
0.037
0.028
0.026
0.12
0.08
0.055
0.032
0.021
0.013
0.12
0.08
0.055
0.032
0.021
0.013
CMT-SERIES
Common Mode Inductors
(Through-Hole)
Mechanical Diagrams
CMT1 Series
FRONT VIEW
BOTTOM VIEW
RECOMMENDED PCB LAYOUT
SIDE VIEW
SCHEMATIC
CMT1-X
wwll yy R
29.5 max
0.80 dia
1.15 dia ± 0.13
4
1
2
3
1
4
1
4
2
3
22.0 max
component side
10.0 ± 0.20
36.5 max
3
2
13.0 ± 0.20
Pin #1 indicator
3.8
typ
3
3
2
4
10.00
13.00
CMT2 Series
FRONT VIEW
RECOMMENDED PCB LAYOUT
SIDE VIEW
BOTTOM VIEW
SCHEMATIC
CMT2 wwll yy R
36.5 max
3.00 dia ± 0.13
1.2 dia
4
1
2
15.0
± 0.20
44.5 max
3.2
2
3
3
21.0 ±0.2
3
Pin #1 indicator
21.0 ± 0.20
4
15.0
±0.2
2
4
3
2
4
26.5 max
component side
1
4.0
± 1.0
1
3
CMT3 Series
TOP VIEW
5
typ
Pin #1 Indicator
1
2
RECOMMENDED PCB LAYOUT
BOTTOM VIEW
SIDE VIEW
z dia
15.0
±0.20
15.0
±0.20
25.0 max Dia
15.0
± 0.20
3
4
ØDia
3
1
CMT3-1
CMT3-2
CMT3-3
CMT3-4
CMT3-5
CMT3-6
component side
3
4
2
3
4
2
1
y dia
2
"Y" Dia
ref
0.58
0.64
0.71
0.80
0.89
0.99
"Z" Dia ref
0.83
0.90
0.97
1.06
1.15
1.25
15.0 ± 0.20
14 max
CMT4 Series
FRONT VIEW
BOTTOM VIEW
SIDE VIEW
RECOMMENDED PCB LAYOUT
15.4 max
z dia
25.0 max
1
y dia
4
12.00
4
1
CMT4-x
wwllyy - R
25.5 max
3
2
11.0
± 0.20
component side
11.00
2
3
CMT4-1
CMT4-2
CMT4-3
CMT4-4
CMT4-5
CMT4-6
"Y" Dia
ref
0.58
0.64
0.71
0.80
0.89
0.99
"Z" Dia ref
0.83
0.90
0.97
1.06
1.15
1.25
5.0 typ
12.0 ± 0.20
4
1
Pin #1 indicator
1
2
(1) All Dimensions are in millimeters unless otherwise
specified
(2) Tolerances are +/- 0.20mm unless stated otherwise.
(3) wwllyy = (Date Code) R = (Revision Level)
Schematic is the same for all the series
CMT-SERIES
Common Mode Inductors
(Through-Hole)
Attenuation Curves
Attenuation
0
-6 -7 -8 -9
CMT1
Series
-10
-10
dB
-20
-30
-40
-50
-60
-1 -2 -3
-70
0.06
0.1
-4 -5
0.2
0.6
1
2
4
dB
FREQUENCY (MHz)
-20
-25
-30
-35
-40
-45
-50
-55
-60
-65
-70
Attenuation
CMT2 Series
-6
-10
-7 -8
-9
-1 -2 -3 -4 -5
0.08
0.1
0.15
0.2
0.3
0.4
0.5
0.6
0.7
0.8
FREQUENCY (MHz)
Attenuation CMT3 & CMT4 Common Mode
-10
-15
-5
-20
-6
dB
-25
-30
-3
-35
-4
-40
-45
-50
0.06
-1
0.1
-2
0.2
0.4
0.6
0.8
1
FREQUENCY (MHz)
2
4
6
CMT-SERIES
Common Mode Inductors
(Through-Hole)
Impedance Curves
Impedance
CMT1 - 1 thru - 5
Impedance
100
-1
90
20
-2
18
80
-3
60
Z (K Ohm)
Z (K Ohm)
70
50
40
30
20
16
-6
14
-7
-10
12
-8
10
8
-9
6
4
-4
10
-5
2
0
0
0.05
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.05
0.9
0.2
0.4
FREQUENCY (MHz)
Impedance
Impedance
CMT2 - 1 thru - 5
0.8
1
1.4
CMT2 - 6 thru -10
25
-1
-6
100
-2
-3
-4
-8
80
-5
60
40
15
10
20
5
0
0
0.05
-7
20
Z (K Ohm)
Z (K Ohm)
0.6
FREQUENCY (MHz)
120
-9
0.1
0.2
0.3
0.4
0.5
0.6
0.7
-10
0.05 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
FREQUENCY (MHz)
1
1.2 1.4 1.6
FREQUENCY (MHz)
Impedance CMT3 & CMT4
Impedance CMT3 & CMT4
25
3.5
-1
-3
20
3
-4 -5
-6
2.5
-2
15
Z (K Ohm)
Z (K Ohm)
CMT1 - 6 thru -10
10
2
1.5
1
5
0.5
0
0.06
0
0.1
0.2
0.4
0.6
FREQUENCY (MHz)
PM-4312 3/07
© Cooper Electronic
Technologies 2007
0.8
1
2
0.06
0.1
0.2
0.4
0.6
0.8
1
2
4
FREQUENCY (MHz)
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