Bel Fuse Inc.
198 Van Vorst Street, Jersey City, NJ 07302 Tel: 201-432-0463 Fax: 201-432-9542 E-Mail: BelFuse@belfuse.com
Website: http://www.belfuse.com
defining a degree of excellence
T1 CARRIER INTERFACE TRANSFORMERS
T1/CEPT Telecom Line Interface Applications
TM0006
Bel provides transformer magnetics in several
package and schematic variations for T1/CEPT
Telecom Line Interface Applications. Bel's high
quality semi-automated processes provide
superior single small form, and standard dual
transformers
.
* 2000 Vrms Isolation.
* Primary Inductance is 1.20mH
minimum.
* Primary DCR is 0.80 ohms
maximum.
* Custom designs available
upon request.
A553-0013-00
A553-0013-01
A553-0013-03
A553-0013-05
A553-0013-06
A553-0013-07
A553-0013-08
0553-0013-IC
0553-0013-AC
0553-0013-BC
0553-0013-HC
0553-0013-1J
0553-0013-2J
0553-0013-4J
0553-0013-RC
0553-0013-SC
0553-1167-00
0.80
1.8/0.80
0.80/0.80
0.80/0.80/1.8
1.8/1.8
0.80/1.8
0.80/1.8
0.80
0.80
0.80
1.8
1.8/1.8
1.8/0.80
1.8/0.8
0.80
0.80
0.80/1.8
16 Topper
14 Topper
14 Topper
14 Topper
14 Topper
14 Topper
14 Topper
6 "T" Topper
6 "T" Topper
6 "T" Topper
6 "T" Topper
14 DIL
14 DIL
14 DIL
6 "T" Topper
6 "T" Topper
14 DIL
A
B
C
C
C
C
C
E
F
G
K
C
D
B
G
E
C
Part
Number
Turns
Ratio
(+/- 5%)
Leakage
Inductance
L
L
(uH) Max
Coupling
Capacitance
C
ww
(pF) Max
Sec
DCR
(ohms)
Max
ELECTRICALS
@ 25
o
C
#Pins
on
Package
and Style
0.80/0.50
0.80/0.50
0.80/0.50
0.50/0.50/0.80
0.80/0.80
0.50/0.80
0.80/0.80
0.50
0.50
0.50
0.80
0.80/0.80
0.80/0.80
0.80/0.50
0.50
0.80
0.50/0.60
35
35
35
50
35
35
35
35
35
35
35
35
35
35
35
35
35/40
Schem.
1:1.385CT/1:1:1
1CT:2CT/1:1
1:1.385CT/1:1CT
Pins (1-2):(14:12) 1:1
(1-3):(14:12) 1.25:1
(5-7):(10:8) 1:2CT
1:2CT/1:2CT
1:1.15CT/1:2CT
1:1:1.266/1:2CT
1:1:1
1:1
1CT:1
1CT:2CT
1:2CT/1:2CT
1:2CT/1:1.36
1CT:2CT/1:1
1:1.15CT
1:1:1.266
1:1:1.266/1:2CT
Schematic and Mechanical information for the above components
are located on the facing page.
T105
defining a degree of excellence
Corporate Office
Bel Fuse Inc.
198 Van Vorst Street, Jersey City, NJ 07302-4496
Tel: 201-432-0463
Fax: 201-432-9542
E-Mail: BelFuse@belfuse.com
Internet: http://www.belfuse.com
Far East Office
Bel Fuse Ltd.
8F/8 Luk Hop Street
San Po Kong
Kowloon, Hong Kong
Tel: 852-2328-5515
Fax: 852-2352-3706
European Office
Bel Fuse Europe Ltd.
Preston Technology Management Centre
Marsh Lane, Preston PR1 8UD
Lancashire, U.K.
Tel: 44-1772-556601
Fax: 44-1772-888366
T1 CARRIER INTERFACE
TRANSFORMERS
3
16
15
14
12
1
2
11 10
9
7
5
3
6
4
8
Secondary
A
Primary
Secondary
C
14
13
12 11 10
2
1
5
6
7
Primary
Secondary
Primary
8
B
Primary
Secondary
Secondary
D
1
2
3
5
4
6
7
Primary
Secondary
Primary
Secondary
E
G
5
3
1
6
4
2
1
3
5
F
5
3
1
4
6
2
1
2
4
6
SCHEMATICS
3
4
1
2
3
4
5
6
7
14
12
13
11 10
9
8
9
5
2
4
6
K
Primary
14
13
12
11 10
9
8
Package Style DIL
Note: 0553-1167-00
is missing pins
4 and 11, and is 0.80"
long and 0.25" high
from seating plane.
bel
Date Code
Part Number
0.385(9.78)
Max
1.00(25.40)
Max
# 24 AWG
Solder Plated
0.10(2.54)
0.20(5.08)
MAX
0.20(5.08)
Min
0.30(7.62)
Dimensions are in inches(mm).
Dimension Tolerance is +/- 0.02(0.51)
unless otherwise specified.
MECHANICALS
Package Style (14/16 Pins)
0.10(2.54)
0.018(0.46)
Ref
0.80(20.30)
Max
0.12(3.05)
Min
bel
Part Number
0.29(7.37)
Max
0.28(7.11)
0.34(8.64)
0.010(0.25)
0.045(1.14)Ref
Cross Sectional View
0.20(5.08)
Max
0.23(5.84)
Max
Date Code
Note: For 14 Pin package, external package dimensions and pin
distances are identical. There are only seven pins per side.
0.325(8.26)
Package Style "T"
0.50(12.70)
Min
0.50(12.70)
Max
0.40(10.16)
0.10(2.54)
0.35(8.89)
Max
0.20(5.08)
0.25(6.35)
Max
Note: For 0553-0013-BC the
pin length is 0.120" +0.2/-0"
TM0006
T106
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