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 “U” INTERFACE TRANSFORMERS
0559-5683-00
Primary to
Secondary
Pins (7-9) tie
Pins (6 to 10)
Part
Number
0559-5683-00
Turns
Ratio
(+/- 1%)
Secondary
Inductance
(mH) Min-Max
Leakage
Inductance
(µH) Max
Pins (4-7 to 6 to 10)
Pins (1-5) Shorted
MECHANICALS
True Postion Grid
(P.C. Pattern, Component Side)
bel Date Code
Part Number
0.920(23.37)
Max
0.90(22.86)
Ref
1.07(27.18)
Max
Dimensions in inches (mm)
Dimension tolerance +/- 0.015(0.25)
unless otherwise stated
0.10(2.52)
Min
0.47(11.94)
Max
Terminal
numbers are for
reference only
2
3
4
5
10
9
8
7
PLACEMENT
0.020" x 0.040"
Typical
SCHEMATIC
1
Primary
Secondary
0.80(20.32)
0.060" Typ
ELECTRICALS @ 25
o
C
6
Bel introduces a new ISDN “U” Interface
transformer.
* Dielectric Strength - 1000 Vrms measured
Primary to Secondary.
1:1.5
77-86
100-172
DCR
(Ω) +/- 10%
Pins
(7-9)
Pins
(1-5)
15.7
19.8
DC in
Primary
(mA) Max
30
Primary Inductance is measured at 100mV @ 1kHz, 30mADC. Leakage Inductance is measured at 100kHz, 0.01VAC.
5
3
9
6
10
7
Notch locates
terminal #1
0.150"
Typ
TM0047
T306
