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