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
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
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
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
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
CMT-SERIES
Common Mode Inductors
(Through-Hole)
Mechanical Diagrams
CMT1 Series
FRONT VIEW
29.5 max
SIDE VIEW
CMT1-X
wwll yy R
RECOMMENDED PCB LAYOUT
1.15 dia
±
0.13
BOTTOM VIEW
0.80 dia
SCHEMATIC
1
4
1
10.0
±
0.20
36.5 max
4
2
1
3
22.0 max
component side
2
13.0
±
0.20
4
3
Pin #1 indicator
2
3
3.8
typ
2
13.00
3
3
10.00
4
CMT2 Series
FRONT VIEW
36.5 max
SIDE VIEW
CMT2 -
wwll yy R
RECOMMENDED PCB LAYOUT
BOTTOM VIEW
SCHEMATIC
3.00 dia
±
0.13
1.2 dia
1
44.5 max
15.0
±
0.20
3.2
4
2
component side
1
4
3
26.5 max
1
4.0
±
1.0
4
2
Pin #1 indicator
3
2
21.0
±
0.20
3
2
21.0
±0.2
3
3
15.0
±0.2
4
CMT3 Series
TOP VIEW
Pin #1 Indicator
SIDE VIEW
5
typ
BOTTOM VIEW
15.0
±0.20
y dia
RECOMMENDED PCB LAYOUT
z dia
1
15.0
±
0.20
2
CMT3-1
CMT3-2
CMT3-3
CMT3-4
CMT3-5
CMT3-6
1
25.0 max Dia
2
2
3
4
3
component side
15.0
±0.20
4
ØDia
3
15.0
±
0.20
4
3
14 max
1
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
CMT4 Series
FRONT VIEW
25.0 ma
x
y dia
12.00
SIDE VIEW
15.4 max
BOTTOM VIEW
RECOMMENDED PCB LAYOUT
z dia
1
11.0
±
0.20
4
CMT4-1
CMT4-2
CMT4-3
CMT4-4
CMT4-5
CMT4-6
4
25.5 max
1
11.00
component side
CMT4-x
wwllyy - R
3
5.0 typ
2
2
3
12.0
±
0.20
"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
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)
Impedance Curves
Impedance
100
90
80
70
Z (K Ohm)
60
50
40
30
20
10
0
0.05
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
CMT1 - 1 thru - 5
-2
-3
Z (K Ohm)
20
18
16
14
12
10
8
6
4
2
0
0.05
Impedance
CMT1 - 6 thru -10
-1
-6
-7
-8
-9
-10
-4
-5
0.2
0.4
0.6
0.8
1
1.4
FREQUENCY (MHz)
FREQUENCY (MHz)
Impedance
120
-1
100
-2
Z (K Ohm)
80
CMT2 - 1 thru - 5
25
-6
-3
-4
Z (K Ohm)
-5
20
Impedance
CMT2 - 6 thru -10
-7
-8
15
10
5
-9
0
-10
60
40
20
0
0.05
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.05 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
1
1.2 1.4 1.6
FREQUENCY (MHz)
FREQUENCY (MHz)
Impedance CMT3 & CMT4
25
3.5
Impedance CMT3 & CMT4
-1
20
-3
3
2.5
Z (K Ohm)
2
1.5
1
0.5
-4 -5
-6
-2
Z (K Ohm)
15
10
5
0
0.06
0.1
0.2
0.4
0.6
0.8
1
2
0
0.06
0.1
0.2
0.4
0.6
0.8
1
2
4
FREQUENCY (MHz)
FREQUENCY (MHz)
PM-4312 3/07
© Cooper Electronic
Technologies 2007
Visit us on the Web at www.cooperbussmann.com
1225 Broken Sound Pkwy. Suite F Boca Raton, FL 33487
Tel: +1-561-998-4100 Toll Free: +1-888-414-2645 Fax: +1-561-241-6640
This bulletin is intended to present product design solutions and technical information that will help the end user with design applications. Cooper Electronic
Technologies reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Cooper
Electronic Technologies also reserves the right to change or update, without notice, any technical information contained in this bulletin. Once a product has been
selected, it should be tested by the user in all possible applications.
Life Support Policy: Cooper Electronic Technologies does not authorize the use of any of its products for use in life support devices or systems without the
express written approval of an officer of the Company. Life support systems are devices which support or sustain life, and whose failure to perform, when
properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user.
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