defining a degree of excellence
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
ISDN TRANSFORMER
0553-0043-DC
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
to be used with the Echelon Lontalk
applications.
* Primary Inductance is 3.5 mH
minimum.
* Isolation Voltage - 1500Vrms.
Number
Part
Electricals @ 25
o
C.
Primary Inductance is measured at 20 mV @ 10 KHz..
0553-0043-DC
Pins (1-5)
3.5
Primary
Inductance
Turns
Ratio
OCL
(µH) Min
1CT:1CT
Pins
(1-5):(2-6)
Pins (2-6)Pins (1-5)
0.50.5
DCR
ohms (max)
ELECTRICALS
BOTTOM
VIEW
Dimensions in (mm)
inches
Primary
bel Date Code
0553-0043-DC
TM0016
T116
