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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: -40C to +125C * Operating ambient temperature range: -40C to +85C range is application specific. The internal "hot-spot" temperature defines the maximum allowable currents, which are limited to 130C, 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 () typ @ 20C (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 () typ @ 20C (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 40C max temperature rise at worst case ambient temperature of 85C
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 @ 20C: (See Chart) DCR (4-3) typ @ 20C: (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
ODia
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)
Attenuation Curves
Attenuation
0 -10 -20
dB
CMT1
-10
Series
-6 -7 -8 -9
-30 -40 -50 -60 -70
0.06
-1 -2 -3
0.1
-4 -5
0.2 0.6 1 2 4
FREQUENCY (MHz)
Attenuation
-20 -25 -30 -35 -40 -45 -50 -55 -60 -65 -70 -6 -7 -8 -9
CMT2 Series
-10
dB
-1 -2 -3 -4 -5
0.1 0.15 0.2 0.3 0.4 0.5 0.6 0.7 0.8
0.08
FREQUENCY (MHz)
Attenuation CMT3 & CMT4 Common Mode
-10 -15 -20
Z (K Ohm)
-5
-6
-25 -30 -35 -40 -45 -50
0.06
-3
-4
-1
0.1
-2
0.2 0.4 0.6 0.8 1 2 4 6
FREQUENCY (MHz)
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 8/06 (c) Cooper Electronic Technologies 2006
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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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