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
ISDN TRANSFORMER
0554-3855-00
M
E
C
H
A
N
I
C
A
L
S
TOP
VIEW
0.11MIN
2.77 MIN
Dimension tolerance +/- 0.01(0.25)
unless otherwise stated
Secondary
SCHEMATIC
Bel provides a new transformer.
* Primary Inductance is 19
H
minimum.
* Isolation Voltage - 3000Vrms.
Number
Part
0554-3855-00
ELECTRICALS
BOTTOM
VIEW
Dimensions in (mm)
inches
Primary
bel
Date Code
0554-3855-00
1:2CT
5
1
6
2
4
Pins (1-5)
19
Primary
Inductance
OCL
(
H) Min
1:2CT
Pins
(1-5):(2-6)
Turns
Ratio
Pins (1-5)=(2-4)=(4-6)
DCR
ohms (max)
0.20
Leakage
Inductance
(
H) Max
60
Coupling
Capacitance
(pF) Max
60
Isolation
Voltage
(Vrms)
1 Min
3000
Electricals @ 25
o
C. Primary Inductance is measured at 20 mVrms @ 100 KHz.
Leakage Inductance and Coupling Capacitance is measured at 100KHz, 10mVrms.
TM0019
T119
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