Description
•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.
Packaging
• Supplied in bulk packaging
Part Number OCL OCL I rms. DCR (Ω) typ DCR (Ω)typ
(mH) min (mH) min Amperes @ 20°C @ 20°C
(1-2) (4-3) max (1-2) (4-3)
CMT1-1-R 66.0 66.0 0.74 1.20 1.20
CMT1-2-R 49.0 49.0 0.88 0.85 0.85
CMT1-3-R 28.0 28.0 1.13 0.50 0.50
CMT1-4-R 21 21 1.37 0.35 0.35
CMT1-5-R 13 13 1.76 0.20 0.20
CMT1-6-R 7.50 7.50 2.27 0.13 0.13
CMT1-7-R 4.20 4.20 2.89 0.08 0.08
CMT1-8-R 2.40 2.40 3.85 0.045 0.045
CMT1-9-R 1.85 1.85 4.53 0.033 0.033
CMT1-10-R 0.94 0.94 6.05 0.018 0.018
CMT2-1-R 30 30 1.50 0.350 0.350
CMT2-2-R 20 20 1.95 0.220 0.220
CMT2-3-R 12 12 2.45 0.135 0.135
CMT2-4-R 8.0 8.0 2.80 0.100 0.100
CMT2-5-R 6.0 6.0 3.40 0.070 0.070
CMT2-6-R 4.8 4.8 3.95 0.053 0.053
CMT2-7-R 3.2 3.2 4.40 0.042 0.042
CMT2-8-R 2.4 2.4 4.75 0.037 0.037
CMT2-9-R 2.0 2.0 5.45 0.028 0.028
CMT2-10-R 1.6 1.6 5.75 0.026 0.026
CMT3-1-R 5.4 5.4 2.0 0.12 0.12
CMT3-2-R 3.5 3.5 2.6 0.08 0.08
CMT3-3-R 2.7 2.7 3.0 0.055 0.055
CMT3-4-R 1.3 1.3 4.0 0.032 0.032
CMT3-5-R 0.92 0.92 5.0 0.021 0.021
CMT3-6-R 0.53 0.53 6.5 0.013 0.013
CMT4-1-R 5.4 5.4 2.0 0.12 0.12
CMT4-2-R 3.5 3.5 2.6 0.08 0.08
CMT4-3-R 2.7 2.7 3.0 0.055 0.055
CMT4-4-R 1.3 1.3 4.0 0.032 0.032
CMT4-5-R 0.92 0.92 5.0 0.021 0.021
CMT4-6-R 0.53 0.53 6.5 0.013 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)
RoHS
2002/95/EC
Mechanical Diagrams
CMT1 Series
1
23
4
2334
SIDE VIEW
Pin #1 indicator
29.5 max
3.8
typ
10.00
13.00
22.0 max
0.80 dia
36.5 max
1
23
4
component side
1.15 dia ±0.13
13.0 ±0.20
10.0 ±0.20
CMT1-X
wwll yy R
FRONT VIEW BOTTOM VIEW
RECOMMENDED PCB LAYOUT SCHEMATIC
2
1
3
4
CMT2 Series
36.5 max
4.0
±1.0
15.0
±0.2
26.5 max
1.2 dia
3.2
44.5 max
1
23
4
component side
3.00 dia ±0.13
21.0 ±0.
20
15.0
±0.20
CMT2 -
wwll yy R
FRONT VIEW BOTTOM VIEW
RECOMMENDED PCB LAYOUT SCHEMATIC
2
1
3
4
21.0 ±0.2
SIDE VIEW
1
23
4
2334
Pin #1 indicator
CMT3 Series
25.0 max Dia
14 max
5
typ
ØDia
SIDE VIEW
12
43
2
3
1
43
2
component side
15.0 ±0.20
15.0
±0.20
TOP VIEW BOTTOM VIEW RECOMMENDED PCB LAYOUT
Pin #1 Indicator "Y" Dia
ref "Z" Dia ref
CMT3-1 0.58 0.83
CMT3-2 0.64 0.90
CMT3-3 0.71 0.97
CMT3-4 0.80 1.06
CMT3-5 0.89 1.15
CMT3-6 0.99 1.25
zdia
15.0
±0.20
15.0
±0.20
3
4
2
1
ydia
CMT4 Series
CMT4-x
wwllyy - R
SIDE VIEW
1
2
3
4
Pin #1 indicator
"Y" Dia
ref "Z" Dia ref
CMT4-1 0.58 0.83
CMT4-2 0.64 0.90
CMT4-3 0.71 0.97
CMT4-4 0.80 1.06
CMT4-5 0.89 1.15
CMT4-6 0.99 1.25
y dia
zdia
1
23
4
component side
12.0 ±0.20
11.0
±0.20
FRONT VIEW BOTTOM VIEW RECOMMENDED PCB LAYOUT
12.00
11.00
25.5 max
25.0 max
2
1
41
5.0 typ
15
.4 max
(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 CMT1 Series
-70
-60
-50
-40
-30
-20
-10
0
0.06 0.1 0.2 0.6 1 2 4
FREQUENCY (MHz)
Attenuation CMT3 & CMT4 Common Mode
-50
-45
-40
-35
-30
-25
-20
-15
-10
0.06 0.1 0.2 0.4 0.6 0.8 1 2 4 6
FREQUENCY (MHz)
-1 -2
-3
-5
-4
-6
dB
Attenuation CMT2 Series
-70
-65
-60
-55
-50
-45
-40
-35
-30
-25
-20
0.08 0.1 0.15 0.2 0.3 0.4 0.5 0.6 0.7 0.8
FREQUENCY (MHz)
-6 -7 -8 -9 -10
-1 -2 -3 -4 -5
dB
CMT-SERIES
Common Mode Inductors
(Through-Hole)
Impedance Curves
Impedance CMT1 - 1 thru - 5
0
10
20
30
40
50
60
70
80
90
100
0.05 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
FREQUENCY (MHz)
-1 -2
-3
-4 -5
Impedance CMT1 - 6 thru -10
0
2
4
6
8
10
12
14
16
18
20
0.05 0.2 0.4 0.6 0.8 1 1.4
FREQUENCY (MHz)
-6
-7
-9
-8
-10
Impedance CMT2 - 1 thru - 5
0
20
40
60
80
100
120
0.05 0.1 0.2 0.3 0.4 0.5 0.6 0.7
FREQUENCY (MHz)
-1
-2 -3 -4
-5
Impedance CMT2 - 6 thru -10
0
5
10
15
20
25
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)
-6 -7
-9
-8
-10
Impedance CMT3 & CMT4
0
0.5
1
1.5
2
2.5
3
3.5
0.06 0.1 0.2 0.4 0.6 0.8 1 2 4
FREQUENCY (MHz)
-4 -5 -6
Impedance CMT3 & CMT4
0
5
10
15
20
25
0.06 0.1 0.2 0.4 0.6 0.8 1 2
FREQUENCY (MHz)
-1
-2
-3
Z (K Ohm)
Z (K Ohm)
Z (K Ohm)
Z (K Ohm)
Z (K Ohm)
Z (K Ohm)
CMT-SERIES
Common Mode Inductors
(Through-Hole)
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.
PM-4312 3/07
© Cooper Electronic
Technologies 2007