US

UK

Taiwan

China

Singapore

+1-847-639-6400 sales@coilcraft.com

+44-1236-730595 sales@coilcraft-europe.com

+886-2-2264 3646 sales@coilcraft.com.tw

+86-21-6218 8074 sales@coilcraft.com.cn

+ 65-6484 8412 sales@coilcraft.com.sg

© Coilcraft Inc. 2013

This product may not be used in medical or high

risk applications without prior Coilcraft approval.

Specification subject to change without notice.

Please check web site for latest information.

CommonModeLineChokes– CMT

Document 326-1

Document 326-1 Revised 05/21/12

CMT-1 Series

Leakage

Lead

PC board

Part

H

L

W

X

Y

diameter

hole

number

(mH)

(A)

max (µH)

(Ohms)

max

max

max

±0.01/0,25 ±0.01/0,25

nom

diameter

CMT1-5.0-1L

5.0

1.0

80

0.207

1.100/27,9 1.210/30,7 0.625/15,9 0.80/20,3

0.40/10,2 0.054/1,37 0.091/2,32

CMT1-8.0-1L

8.0

1.0

125

0.270

1.100/27,9 1.210/30,7 0.625/15,9 0.80/20,3

0.40/10,2 0.054/1,37 0.091/2,32

CMT1-15.0-1L

15.0

1.0

233

0.430

1.155/29,4 1.300/33,0 0.625/15,9 0.80/20,3

0.40/10,2 0.054/1,37 0.091/2,32

CMT1-2.5-2L

2.5

2.0

42

0.090

1.100/27,9 1.210/30,7 0.625/15,9 0.80/20,3

0.40/10,2 0.054/1,37 0.091/2,32

CMT1-4.0-2L

4.0

2.0

70

0.095

1.050/26,7 1.210/30,7 0.625/15,9 0.80/20,3

0.40/10,2 0.054/1,37 0.091/2,32

CMT1-7.5-2L

7.5

2.0

74

0.108

1.155/29,4 1.300/33,0 0.625/15,9 0.80/20,3

0.40/10,2 0.054/1,37 0.091/2,32

CMT1-1.3-4L

1.3

4.0

20

0.029

1.100/27,9 1.210/30,7 0.625/15,9 0.80/20,3

0.40/10,2 0.054/1,37 0.091/2,32

CMT1-2.1-4L

2.1

4.0

36

0.040

1.100/27,9 1.210/30,7 0.625/15,9 0.80/20,3

0.40/10,2 0.054/1,37 0.091/2,32

CMT1-3.7-4L

3.7

4.0

40

0.036

1.125/28.6 1.300/33,0 0.625/15,9 0.80/20,3

0.40/10,2 0.054/1,37 0.091/2,32

CMT1-1.0-6L

1.0

6.0

19

0.022

1.100/27,9 1.210/30,7 0.625/15,9 0.80/20,3

0.40/10,2 0.054/1,37 0.091/2,32

CMT1-1.7-6L

1.7

6.0

34

0.032

1.155/29,4 1.300/33,0 0.625/15,9 0.80/20,3

0.40/10,2 0.054/1,37 0.091/2,32

CMT1-3.0-6L

3.0

6.0

35

0.027

1.200/30,5 1.210/30,7 0.625/15,9 0.80/20,3

0.40/10,2 0.054/1,37 0.091/2,32

CMT1-.6-9L

0.6

9.0

11

0.012

1.200/30,5 1.210/30,7 0.625/15,9 0.80/20,3

0.40/10,2 0.042/1,07 0.071/1,80

CMT1-1.1-9L

1.1

9.0

12

0.013

1.300/33.0 1.210/30,7 0.625/15,9 0.80/20,3

0.40/10,2 0.042/1,07 0.071/1,80

CMT1-1.9-9L

1.9

9.0

20

0.017

1.300/33.0 1.400/35,6 0.625/15,9 0.80/20,3

0.40/10,2 0.042/1,07 0.071/1,80

CMT1-.5-12L

0.5

12.0

9

0.008

1.200/30,5 1.210/30,7 0.650/16,5 0.80/20,3

0.40/10,2 0.048/1,22 0.081/2,06

CMT1-.8-12L

0.8

12.0

9

0.008

1.200/30,5 1.210/30,7 0.650/16,5 0.80/20,3

0.40/10,2 0.048/1,22 0.081/2,06

CMT1-1.4-12L

1.4

12.0

16

0.011

1.300/33.0 1.210/30,7 0.650/16,5 0.80/20,3

0.40/10,2 0.048/1,22 0.081/2,06

CMT1-.3-15L

0.3

15.0

6

0.005

1.300/33.0 1.210/30,7 0.625/15,9 0.80/20,3

0.40/10,2 0.054/1,37 0.091/2,32

CMT1-.6-15L

0.6

15.0

6.5

0.006

1.250/31.8 1.210/30,7 0.650/16,5 0.80/20,3

0.40/10,2 0.054/1,37 0.091/2,32

CMT1-1.1-15L

1.1

15.0

13.7

0.008

1.250/31.8 1.210/30,7 0.700/17,8 0.80/20,3

0.40/10,2 0.054/1,37 0.091/2,32

1. Inductance is per winding, tested at 15.75 kHz, 0 Adc.

2. Leakage inductance is measured from pin 1 to pin 4 with pins 2 and 3 shorted.

3. DCR is per winding.

4. Operating temperature range –40°C to +85°C.

5. Electrical specifications at 25°C.

Coilcraft’s CMT toroid style common mode chokes are

designedtoprovidethehighestcommonmodeimpedance

over the widest frequency range.These parts are ideal for

any application requiring a high DC current bias and are

well suited for use in switch-mode power supplies.

Common mode chokes are most effective in filtering sup-

ply and return conductors with in-phase signals of equal

amplitude. Differential mode inductors are available for

filtering out-of-phase or uneven amplitude signals.

CMTs feature inductance values up to 125 mH and

Irms

ratings as high as 15 Amps.

• 1250 Vrms, one minute isolation between windings

• Industry standard footprint.

• Creepage and clearance = 3.2 mm

• UL1446 Class B (130°C) Insulation System

(UL File E83628)

W max

23

Schematic

1

2

3

4

1

Recommended

PC Board Layout

2

3

X

Y

4

1

L max

2

0.120/0.180

3,05/4,57

0.118

3,00

H max

Parts manufactured

prior to

September 2011

may be

marked differently.

Part

number

Internal

codes

CMTX-X.X-XL

CC-3 Y

XXXX

Weights:

CMT1: 13.3 – 25.5 g;

CMT2: 20.7– 41.7 g;

CMT3: 42.5 – 77.2 g;

CMT4: 115 – 117 g

Terminations: Tin-silver over copper