Technical Data
4312
Effective October 2015
Supersedes March 2007
CMT
Common mode inductors, through-hole
Applications
•
Protects AC input from effects of switching
regulators
Off-line power supplies
EMI filters
DC-DC converters
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•
•
•
•
Computer, TV, audio and office equipment
Environmental data
•
Product description
•
Storage temperature range (component):
-40°C to +125°C
Operating temperature range: -40°C to +125°C
(ambient + self-temperature rise).
Four sizes of through-hole off-line common
mode inductors
Inductance range from 0.53 - 66 mH
Current range up to 6.5 Amps
Frequency range up to 6 MHz
Ferrite core material
Noise attenuation up to 68 dB
•
•
•
•
•
•
•
Meets UL94V-0 flammability standard
Technical Data
4312
Effective October 2015
CMT
Common mode inductors, through-hole
Product specifications
Part number
OCL (mH)
minimum (1-2)
OCL (mH)
minimum (4-3)
l rms.
Amperes max
DCR (Ω) typ
@ 20°C (1-2)
DCR (Ω) typ
@ 20°C (4-3)
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
66.0
49.0
28.0
21
13
7.50
4.20
2.40
1.85
0.94
30
20
66.0
49.0
28.0
21
13
7.50
4.20
2.40
1.85
0.94
30
20
0.74
0.88
1.13
1.37
1.76
2.27
2.89
3.85
4.53
6.05
1.50
1.20
0.85
0.50
0.35
0.20
0.13
0.08
0.045
0.033
0.018
0.350
1.20
0.85
0.50
0.35
0.20
0.13
0.08
0.045
0.033
0.018
0.350
12
8.0
6.0
4.8
3.2
2.4
1.6
2.0
5.4
3.5
2.7
1.3
0.92
5.4
0.53
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.
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1.95
0.220
0.135
0.220
12
2.45
0.135
8.0
2.80
0.100
0.100
0.070
6.0
3.40
0.070
0.053
4.8
3.95
0.053
3.2
4.40
0.042
0.042
0.037
2.4
4.75
0.037
0.028
2.0
5.45
0.028
1.6
5.75
2.0
2.6
0.026
0.12
0.08
0.026
0.12
0.08
5.4
3.5
2.7
3.0
0.055
0.055
0.032
1.3
4.0
0.032
0.021
0.12
0.92
5.4
5.0
0.021
0.12
0.08
0.53
3.5
6.5
0.013
0.08
0.013
2.0
2.6
2.7
3.0
0.055
0.055
0.032
1.3
4.0
0.032
0.92
5.0
0.021
0.013
0.021
0.53
6.5
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
2
www.eaton.com/elx
CMT
Common mode inductors, through-hole
Dimensions–mm
Technical Data
4312
Effective October 2015
CMT1
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
3
4
Pin #1 indicator
2
3
13.0
±
0.20
3.8
typ
2
13.00
3
3
10.00
4
CMT2
36.5 max
FRONT VIEW
4.0
±
1.0
2
21.0
±0.2
CMT3
Pin #1 Indicator
1
25.0 max Dia
4
CMT4
FRONT VIEW
25.0 ma
x
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SIDE VIEW
CMT2 -
wwll yy R
RECOMMENDED PCB LAYOUT
BOTTOM VIEW
SCHEMATIC
3.00 dia
±
0.13
1
4
1.2 dia
1
4
44.5 max
15.0
±
0.20
component side
2
3
3.2
2
3
1
4
26.5 max
2
3
Pin #1 indicator
3
3
15.0
±0.2
4
21.0
±
0.20
TOP VIEW
SIDE VIEW
5
typ
BOTTOM VIEW
15.0
±0.20
RECOMMENDED PCB LAYOUT
y dia
2
2
4
3
1
2
z dia
3
15.0
±0.20
15.0
±
0.20
component side
3
ØDia
1
2
4
3
CMT3-1
CMT3-2
CMT3-3
CMT3-4
CMT3-5
CMT3-6
"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
15.0
±
0.20
14 max
SIDE VIEW
15.4 max
BOTTOM VIEW
RECOMMENDED PCB LAYOUT
4
25.5 max
12.00
y dia
1
z dia
4
5.0 typ
3
CMT4-x
wwllyy - R
1
11.00
11.0
±
0.20
component side
2
2
3
12.0
±
0.20
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
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
www.eaton.com/elx
3
Technical Data
4312
Effective October 2015
CMT
Common mode inductors, through-hole
Attenuation Curves
Attenuation CMT1
0
-10
-20
dB
-6 -7 -8 -9
-10
-30
-40
-50
-60
-70
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-1 -2 -3
0.1
-4 -5
0.2
0.06
0.6
1
2
4
FREQUENCY (MHz)
Attenuation CMT2
-9
-10
-20
-25
-30
-35
-40
-45
-50
-55
-60
-65
-70
-6
-7 -8
dB
-1 -2 -3 -4 -5
0.1
0.08
0.15
0.2
0.3
0.4
0.5
0.6
0.7
0.8
FREQUENCY (MHz)
Attenuation CMT3 & CMT4
-10
-15
-20
-25
-30
-35
-40
-45
-50
-5
-6
dB
-3
-4
-1
0.1
-2
0.2
0.4
0.6
0.8
1
2
4
6
0.06
FREQUENCY (MHz)
4
www.eaton.com/elx
CMT
Common mode inductors, through-hole
Impedance Curves
Impedance
100
90
80
Z (K Ohm)
70
60
50
40
30
20
10
0
0.05
0.1
0.2
Technical Data
4312
Effective October 2015
CMT1 - 1 thru - 5
-2
-3
Z (K Ohm)
20
18
16
14
12
10
8
6
4
2
0
0.6
0.7
0.8
0.9
0.05
Impedance
-6
-8
CMT1 - 6 thru -10
-1
-7
-10
-9
-4
0.3
0.4
-5
0.5
120
100
Z (K Ohm)
80
60
40
20
0
0.05
25
20
Z (K Ohm)
15
10
5
0
0.06
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FREQUENCY (MHz)
FREQUENCY (MHz)
0.2
0.4
0.6
0.8
1
1.4
Impedance
CMT2 - 1 thru - 5
Impedance
CMT2 - 6 thru -10
-7
-1
25
20
15
10
5
0
-6
-2
-3
-4
-8
-5
Z (K Ohm)
-9
-10
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
-3
Impedance CMT3 & CMT4
-1
3.5
3
-4 -5
-6
-2
2.5
Z (K Ohm)
2
1.5
1
0.5
0.1
0.2
0.4
0.6
0.8
1
2
0
0.06
0.1
0.2
FREQUENCY (MHz)
FREQUENCY (MHz)
0.4
0.6
0.8
1
2
4
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5
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