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
0559-6204-00 and 0559-6204-01
1.25:1
15026.5-30.0 12
60
8
28.0
Primary to
Secondary
Pins (1-5) tie
Pins (2-4)
Primary to
Secondary
Pins
(1-5)
Pins
(7-9)
Part
Number
DCR
(Ω) Max
DC in
Primary
(mA) Max
0559-6204-00
0559-6204-01
Interwinding
Capacitance
(pF) Typ
Turns
Ratio
(+/- 1%)
Primary
Inductance
(mH) Min-Max
Leakage
Inductance
(µH) Max
Pins (7-9)
Pins (1,2,4,+5) Shorted
Primary Inductance is measured at 100mV @ 1kHz, 0 & 60mADC. Leakage Inductance is measured at 100kHz, 0.01VAC.
Interwinding Capacitance is measured 10kHz, 1.0V.
MECHANICALS
Bel introduces a new ISDN “U” Interface
transformer. The transformer is designed
to be used with the Motorola ISDN "U"
Interface Chip MC145572.
* Dielectric Strength - 1500 Vrms measured Primary to
Secondary. Meets or exceeds requirements of
CAN/CSA-C22.2 No.225(M90) &
UL Std. No. 1950 2nd ed.
* Part Number 0559-6204-00 varies only in its additional
insulation.
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
Dimension tolerance +/- 0.015(0.25)
unless otherwise stated
Dimensions in inches (mm)
0.10(2.52)
Min
Terminal
numbers are for
reference only
2
3
4
5
10
9
8
7
PLACEMENT
0.020" x 0.040"
Typical
NOTE: For Part Number
0559-6204-00 only, there is
additional insulation here.
SCHEMATIC
9
8
7
1
2
4
5
Primary
Secondary
0.80(20.32)
0.060" Typ
0.150"
Typ
Notch locates
terminal #1
0.47(11.94)
Max
TM0035
ELECTRICALS @ 25
O
C.
T304
