®
CMT-SERIES
Common Mode Inductors
(Through-Hole)
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
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
CMT1-2
CMT1-3
CMT1-4
CMT1-5
CMT1-6
CMT1-7
CMT1-8
CMT1-9
CMT1-10
CMT2-1
CMT2-2
CMT2-3
CMT2-4
CMT2-5
CMT2-6
CMT2-7
CMT2-8
CMT2-9
CMT2-10
CMT3-1
CMT3-2
CMT3-3
CMT3-4
CMT3-5
CMT3-6
CMT4-1
CMT4-2
CMT4-3
CMT4-4
CMT4-5
CMT4-6
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
SRF = Self Resonant Frequency
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)
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
20
Impedance
18
16
14
Z (K Ohm)
12
10
8
6
4
2
0
0.05
0.2
0.4
CMT1 - 6 thru -10
-1
-2
-3
-6
-7
-8
-9
-10
-4
-5
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 1/04
© Cooper Electronic
Technologies 2004
Visit us on the Web at www.cooperET.com
3601 Quantum Boulevard Boynton Beach, Florida 33426-8638
Tel: +1-561-752-5000 Toll Free: +1-888-414-2645 Fax: +1-561-742-1178
This bulletin is intended to present product design solutions and technical information that will help the end user with design applications. Cooper
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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.
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