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
T1/CEPT/ISDN-PRI TRANSFORMER
0553-6500-04
TOP
VIEW
0.11MIN
2.77 MIN
0.50(12.70)
Max
0.35(8.89)
Max
bel
Date Code
0553-6500-04
0.13(3.30)
Min
0.25(6.35)
Max
0.40(10.16)
M
E
C
H
A
N
I
C
A
L
S
0.02" pin
diameter typical
0.10(2.54)
BOTTOM
VIEW
Bel provides a new transformer
to be used in multiple T1/CEPT/ISDN-Pri
applications.
* Primary Inductance is 1.5 mH
minimum.
* Isolation Voltage - 1500Vrms.
5
3
1
2
Secondary
SCHEMATIC
6
1:1:1.266
Dimension tolerance +/- 0.01(0.25)
unless otherwise stated
Dimensions in inches(mm)
0553-6500-04
DCR
(ohms) Max
Part
Number
1.50
ELECTRICALS
@ 25
O
C.
Pins (1-5)
0.9
Pins (2-6)
0.7
Leakage
Inductance
L
L
(
H) Max
0.40
Coupling
Capacitance
(pF) Max
35
1:1:1.26
Pins
(2-6):(3-5):(1-5)
Primary
Inductance
OCL
(mH) Min
Turns
Ratio
+/- 5%
Primary
TM0045
T125
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