defining a degree of excellence
SURFACE MOUNT T1 CARRIER
INTERFACE TRANSFORMERS
T1/CEPT Telecom Line Interface Applications
TM0008
* High Pot 2000 Vrms measured
Bel offers a new cost effective package on our
standard T1/CEPT Telecom Interface Line
Transformers. This sixteen lead, “TopperTM”,
surface mount package, provides a superior,
cost effective, quality product.
for one minute.
* Primary Inductance (OCL) is
1.20 Milihenries minimum.
* Primary DCR is 0.80 ohms maximum.
ELECTRICALS@ 25O C
* Coupling Capacitance
(Cww) is 35 PicoFarads
maximum.
Leakage
Inductance
LL(µH)Max
Coupling
Capacitance
(pF) Max
35
DCR
(ohms) Max
TurnsRatio
Part
Number
Schematic
T1/T2
S553-0013-04
S553-0013-05
1:1.7/1:2CT
1:1/1:1.25/1:2CT
A
B
0.80/1.80
0.80/1.10/1.80
* Custom designs
available.
0.50/0.80
0.50/0.50/0.80
50
TurnsratioofS553-0013-05ia(1-2):(16-14)/(1-3):(16-14)/(5-8):(9-11)
SCHEMATICS
Secondary
Secondary
Primary
Primary
B
A
9
14
16
1
14
16
11
9
10
11
10
The Bel Surface Mount "TopperTM"
package offers an industry standard
package size and pin-out at an
aggressive price.
2
3
6
8
1
3
6
8
Secondary
Primary
Secondary
Primary
Dimensions are in inches(mm).
Dimension Tolerance is +/- 0.02(0.51)
unless otherwise specified.
Package Style SMT
0.375(9.53)
MECHANICALS
0.485(12.32)
Max
Top
View
0.215(5.46)
Max
0.012(0.31)
0.008(0.20)
0.350(8.89)
Date Code
bel
0.285(7.24)
Part Number
Max
0.350(8.89)
4o Nom
0.015(0.38)
0.004(0.10)
0.025(0.64)
0.015(0.38)
0.018(0.45)
+/- 0.002(0.05)
+/-
0.05(1.27)Typ.
0.005(0.13)
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
T108
