ISDN S-Interface
Transformers
Electrical Specifications
1,2,3,4
at 25
O
C
Isolation (Min.)
4000V
RMS
2000V
RMS
Part. No.
Part. No.
Turns OCL min.
Ratio
Pri
( + 2%)
( mH )
Meets the Pulse Waveform Template of CCITT I.430
when recommended Transformer and Chip pair are used.
Excellent Longitudinal Balance
L
L
max.
Sec.
(
µH
)
C
W/W
max.
( pF )
CD pri.
max.
( pF )
2kV
RMS
& 4kV
RMS
min. Isolation
DCR Pri. DCR Sec.
+
15%
+
15%
(
Ω
)
(
Ω
)
Schem.
Style
T-10400
T-10401
T-10402
T-10403
T-10404
T-10405
T-10450
T-10451
T-10452
T-10453
T-10454
T-10455
1:1
1:1.8
1:2
1:2.5
1:2.5
1:2
22
22
22
22
22
22
5
15
15
30
15 / 40
11
100
100
100
100
100
100
40
140
80
150
110
180
2.4
2.5
2.3
2.5
2.5
2.5
2.4
4.2
4.0
5.8
5.8
5.0
A
B
A
B
C
A
Schematic "C"
1. Primary is Line Side
2. OCL: Primary Inductance
@10 kHz and 700 mV
3. Unbalanced current at
TE:
∆
Idc = 1 mA max.
4. Longitudinal Conversion
Loss 10KHz to 300 KHz
60dB min.
Schematic "A"
Schematic "B"
P ri
Sec
P ri
Sec
Pri
Sec
All of the above parts are
available as Surface
Mount components.
For Surface Mount part
number replace the second
digit of thru hole part
number with "3".
( i.e. T-10400 = T-13400)
NOTE: Unused Pins Omitted as per Schematic Diagrams
Surface Mount Package, T-134XX
Tape and Reel Available
Specifications subject to change without notice.
For other values & Custom Designs, contact factory.
ISDN-SNG - 9/97
Rhombus
Industries Inc.
13
15801 Chemical Lane, Huntington Beach, CA 92649-1595
Tel: (714) 898-0960
•
Fax: (714) 896-0971
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