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
defining a degree of excellence
SURFACE MOUNT T1 CARRIER
INTERFACE TRANSFORMERS
T1/CEPT Telecom Line Interface Applications
9
10
11
12
14 13
15
16
Primary
Secondary
1
2
4 5
6
7
Secondary
Primary
8
Primary
Secondary
16
15
14 13 12 11
10
9
Primary
Secondary
1
2
3 4 5
6
7
16
15
14 13 12
11 10
9
1
2
3
4
5
6
A
B
C
Primary
1
2
4 5
8
16
15
14 13 12 11
10
9
Secondary
Primary
D
Package Style SMT
8
7
Secondary
7
8
3
6
3
MECHANICALS
ELECTRICALS
S553-0013-00
S553-0013-01
S553-0013-02
S553-0013-03
S553-0013-06
S553-0013-07
Part
Number
Turns Ratio
T1/T2
1:1.385CT/1:1:1
1CT:2CT/1:1
1:2CT/1:1.36
1:2CT/1:2CT
1:1.15CT/1:2CT
1:1:1.266/1:2CT
Leakage
Inductance
L
L
(
H) Max
0.80/0.50
0.80/0.50
0.80/0.80
0.80/0.80
0.50/0.80
0.80/0.80
DCR
(ohms) Max
Schematic
0.80
1.80/0.80
1.80/0.80
0.80/1.80
0.80/1.80
0.80/1.80
A
B
C
D
D
D
@ 25
o
C
SCHEMATICS
Secondary
Primary
Bel offers a new cost effective package on our
standard T1/CEPT Telecom Interface Line
Transformers. This sixteen lead, surface mount
package, provides a superior, cost effective,
quality product.
The Bel Surface Mount "Topper
TM
" package offers an
industry standard package size and pin-out at an
aggressive price.
Dimensions are in inches(mm).
Dimension Tolerance is +/- 0.02(0.51)
unless otherwise specified.
0.215(5.46)
Max
0.015(0.38)
0.004(0.10)
0.350(8.89)
+/-
0.005(0.13)
0.012(0.31)
0.008(0.20)
4
o
Nom
0.025(0.64)
0.015(0.38)
0.350(8.89)
0.375(9.53)
0.285(7.24)
Max
bel
Date Code
Part Number
0.018(0.45)
+/- 0.002(0.05)
Top
View
0.485(12.32)
Max
0.05(1.27)Typ.
TM0007
T107
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