Telecommunication Components
ctparts.com
Not shown at actual size.
ISDN Common Mode
Chokes
APPLICATIONS
Suited for LAN & Telecom Application.
High Frequency Chokes for EMI Reduction
Low Frequency Chokes improve longitudinal balance in ISDN-S/T Links.
Surface Mount & Through Hole models available.
Electrical Specifications @ 25°C
Operating Temperature: 0°C to +70°C
Frequency range: 100kHz to 500MHz
Tape & Reel packaging available for surface mount parts.
RoHS Compliant available.
CT-~~~~~F Please specify “F” for RoHS compliant
Compliant
Available
RoHS
ORDERING INFO
Surface Mount Chokes
Number
Of
Lines
4
4
4
4
4
6
2
4
8
Primary
Inductance
OCL (µH Min)
37
22.5
4700
47
100
21
47
24
36
Common Mode Attenuation (dB)
100K
7
1
35
3
4
–
3
8
8
1M
19
13
50
19
22
12
20
21
24
10M
25
30
37
32
34
24
33
32
36
30M
24
35
27
36
38
27
37
36
39
50M
23
35
22
35
40
27
35
37
35
100M
20
31
–
29
36
26
27
36
29
300M
8
17
–
12
20
12
9
30
18
500M
7
7
–
6
10
9
4
20
11
DCR
Ω
(Ω Max)
0.30
0.22
1.0
0.30
0.60
0.35
0.3
0.25
0.35
Mech.
Figure
4
6
5
2
6
4
1
3
4
Schem.
Figure
I
B
J
B
C
H
D
C
G
Part Number
CT-65738_
CT-65857_
CT-65853_
CT-65854_
CT-67540_
CT-68602_
CT-68624_
CT-68627_
CT-69011_
Through Hole Chokes
Number
Of
Lines
6
4
4
4
2
4
4
4
4
Primary
Inductance
OCL (µH Min)
25.0
6000
1000
24.0
24
4700
5.0
140
68
Common Mode Attenuation (dB)
100K
1
40
23
1
1
34
1
4
3
1M
14
47
36
15
14
46
14
20
17
10M
31
26
36
30
28
36
28
34
30
30M
36
16
27
32
32
26
33
38
36
50M
35
10
23
30
33
21
34
38
34
100M
30
–
–
24
28
–
32
34
27
300M
18
–
–
7
13
–
20
21
11
500M
10
–
–
2
5
–
13
13
2
DCR
Ω
(Ω Max)
0.35
1.40
0.70
0.30
0.30
1.00
0.25
0.70
0.35
Mech.
Figure
9
10
10
11
8
10
12
12
13
Schem.
Figure
F
B
B
B
E
B
C
C
C
Part Number
CT-64683_
CT-65541_
CT-65542_
CT-65554_
CT-65944_
CT-65950_
CT-67501_
CT-67539_
CT-68002_
11.29.05
Technologies
Manufacturer of Inductors, Chokes, Coils, Beads, Transformers & Toroids
800-684-5322
Inside US
949-453-1811
Outside US
Copyright © 2005 by CT Magnetics, DBA Central Technologies. All rights reserved.
CT Magnetics reserves the right to make improvements or change specifications without notice
CENTRAL
Telecommunication Components
ctparts.com
ISDN Common Mode Chokes
PHYSICAL DIMENSIONS
3
J
H
A
4
12.75
(.502)
8.89
(.350)
1.27
(.050)
CT-XXXXX
Date Code
B
9.59
(.378)
CT-XXXXX
Date Code
8.89
(.350)
6.95
(.274)
10.50 7.10
(.413) (.280)
0.76
(.030)
Suggested PCB Layout
D
2.54
(0.1)
C
0.17±0.13(.007±.005)
DIM
A
B
C
D
H
J
Inches
Min.
Max.
.49
.27
.07
.29
.37
.016
.51
.29
.09
.31
.39
.020
Milllimeters
Min.
Max.
12.39
6.80
1.73
7.37
9.35
0.41
12.9
7.30
2.23
7.87
9.85
0.51
5.75
(.226)
0.30
(.012)
0°~8°
0.1(.004)
0.25±0.13
(0.010±0.005)
1.27(.050) 0.48(.019)
16 Surfaces
0.70
(.028)
11.29.05
Technologies
Manufacturer of Inductors, Chokes, Coils, Beads, Transformers & Toroids
800-684-5322
Inside US
949-453-1811
Outside US
Copyright © 2005 by CT Magnetics, DBA Central Technologies. All rights reserved.
CT Magnetics reserves the right to make improvements or change specifications without notice
CENTRAL
Telecommunication Components
ctparts.com
ISDN Common Mode Chokes
PHYSICAL DIMENSIONS
8
12.7(.500)
Max.
4
2
CT-XXXXX
Date Code
1
3
9
6.60(.260)
Max.
8.89(.350)
Max.
17.14(.675)
Max.
3.30
(.130
±.010
)
10.2
(.400)
5.1
(.200)
9.8(.385)
Max.
7.62(.300)
Max.
7.62(.300)
Max.
2.54
(.100)
12.7
(.500)
12
SCHEMATICS
11.29.05
Technologies
Manufacturer of Inductors, Chokes, Coils, Beads, Transformers & Toroids
800-684-5322
Inside US
949-453-1811
Outside US
Copyright © 2005 by CT Magnetics, DBA Central Technologies. All rights reserved.
CT Magnetics reserves the right to make improvements or change specifications without notice
CENTRAL
1
CT-XXXXX
Date Code
7
8
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