Telecommunication Components
ctparts.com
Not shown at actual size.
T1/CEPT/ISDN-PRI
Dual Through-Hole
APPLICATIONS
l
Dual surface mount package contains both transmit & receive.
l
Models matched to leading transceiver ICs.
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UL 1459 Recognized
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Isolation Voltage: 1500 Vrms
Electrical Characteristics @ 25°C
ORDER INFO
Standard Temperature Range Dual Transformers
Operating Temperature 0°C to +70°C
Turns
Ratio
(pri:sec ± 5%)
1:2CT & 1:2CT
1:2CT & 1:1.36
1:2CT & 1:2CT
1CT:2CT & 1:1
1.58:2CT & 1.58:1
1:1CT & 2:1
1.31:1CT & 2.62:1
1:1.15CT & 1:2CT
1:1/1.26 & 1:2CT
Part Number
CT-64951
CT-64952
CT-64953
CT-64954
CT-64955
CT-64956
CT-64957
CT-65565
CT-65566
OCL@ 25°C
(mH Min.)
1.20
1.20
2.00
1.20
0.80
1.80
1.20
1.50
1.50
&
&
&
&
&
&
&
&
&
1.20
1.20
2.00
1.20
0.80
0.80
1.20
1.20
1.20
Cw/w
(pF Max.)
35 &
35 &
50 &
30 &
30 &
30 &
30 &
35 &
40 &
35
35
50
30
30
30
30
40
40
LL sec
(µH Max.)
0.50
0.50
0.60
0.55
0.50
0.60
0.80
0.60
0.50
&
&
&
&
&
&
&
&
&
0.50
0.80
0.60
0.50
0.50
0.60
0.80
0.50
0.40
DCR pri
(
W
Max.)
0.70
0.80
1.00
0.70
0.60
0.50
0.60
0.70
0.70
&
&
&
&
&
&
&
&
&
0.70
0.80
1.00
0.70
0.60
0.50
0.60
0.70
0.70
DCR sec
(
W
Max.)
1.20
1.20
2.00
1.20
0.70
0.50
0.50
1.10
0.90
&
&
&
&
&
&
&
&
&
1.20
1.00
2.00
0.70
0.30
0.20
0.30
1.30
1.30
Package/
Schematic
ND-1/1G
ND-1/2G
ND-1/3G
ND-1/4G
ND-1/5G
ND-1/5G
ND-1/5G
MD-1/1G
MD-1/1G
Primary
Pins
14-12, 5-7
14-12, 5-7
14-12, 10-8
1-3, 5-7
1-3, 5-7
1-3, 5-7
1-3, 5-7
14-12, 5-7
14-12, 5-7
Extended Temperature Range Dual Transformers
Operating Temperature -40°C to +85°C
Turns
Ratio
(pri:sec ± 5%)
1:1.15CT & 1:2CT
1:1/1.26 & 1:2 CT
1CT:2CT & 1:1.36CT
1CT:1CT & 3CT:1CT:0.25
1CT:1CT & 1CT:3CT:1
Part Number
CT-65567
CT-65568
CT-65774
CT-68618
CT-64950
OCL@ 25°C
(mH Min.)
1.50
1.50
1.20
1.20
1.20
&
&
&
&
&
1.20
1.20
1.20
32.0
1.20
Cw/w
(pF Max.)
40
50
50
40
40
&
&
&
&
&
60
60
50
65
40
LL sec
(µH Max.)
0.80
0.80
0.96
0.80
0.80
&
&
&
&
&
0.80
0.80
0.80
0.80
0.80
DCR pri
W
(W Max.)
0.90
0.90
1.00
1.00
1.00
&
&
&
&
&
0.90
0.90
1.00
3.00
0.80
DCR sec
W
(W Max.)
1.10
1.10
1.70
1.00
1.00
&
&
&
&
&
1.70
1.70
1.20
1.20
2.00
Package/
Schematic
MD-1/1G
MD-1/1G
MD-1/8G
QD-1/7G
QD-1/7G
Primary
Pins
14-12, 5-7
14-12, 5-7
14-12, 5-7
1-3, 11-9
1-3, 4-6
03.10.03
Technologies
Manufacturer of Inductors, Chokes, Coils, Beads, Transformers & Toroids
800-684-5322
Inside US
949-453-1811
Outside US
Copyright © 2004 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
T1/CEPT/ISDN-PRI
Dual Through-Hole
PHYSICAL DIMENSIONS (PACKAGE)
SCHEMATICS
03.10.03
Technologies
Manufacturer of Inductors, Chokes, Coils, Beads, Transformers & Toroids
800-684-5322
Inside US
949-453-1811
Outside US
Copyright © 2004 by CT Magnetics, DBA Central Technologies. All rights reserved.
CT Magnetics reserves the right to make improvements or change specifications without notice
CENTRAL
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