ISDN S-Interface
Transformers
Dual - Transmit / Receive
Meets the Pulse Waveform Template
of CCITT I.430when recommended
Transformer & Chip pair are used.
Excellent Longitudinal Balance
2000V & 4000V RMS min. Isolation Versions
Surface Mount Replacements for
T-10500 / T-10550 families
OCL
(1, 2)
Pri. min.
( mH )
L
L
Sec. max.
(
µH
)
Cw/w
max.
( pF )
CD pri
max.
( pF )
DCR pri
+ 15%
(
Ω
)
DCR sec
+ 15%
(
Ω
)
Surface Mount Package
Electrical Specifications
(3,4)
at 25
O
C
2000V
RMS
4000V
RMS
Isolation
Isolation
Transmit
Receive
SMD
P/N
SMD
P/N
Ratio
( + 2%)
T-13550
T-13551
T-13552
T-13553
T-13554
T-13555
T-13556
T-13500
T-13501
T-13502
T-13503
T-13504
T-13505
T-13506
(2400V
RMS
Isolation)
T
R
T
R
T
R
T
R
T
R
T
R
T
R
1:2
1:1
1:1
1:1
1:1.8
1:2.5
1:2
1:2
1:2.5
1:2.5
1:2
1:2
1:2.5
1:2.5
22
22
22
22
22
22
22
22
22
22
22
22
22
22
15
5
5
5
15
30
15
15
15 - 40
15 - 40
11
11
4
4
100
100
100
100
100
100
100
100
100
100
100
100
100
100
80
40
40
40
140
150
80
80
110
110
180
180
100
100
2.3
2.4
2.4
2.4
2.5
2.5
2.3
2.3
2.5
2.5
2.5
2.5
2.3 max.
2.3 max.
4.0
2.4
2.4
2.4
4.2
5.8
4.0
4.0
5.8
5.8
5.0
5.0
5.8 max.
5.8 max.
1) Primary is Line Side
2) OCL @10 KHz and 700 mV, except
T-13506, T-13556 voltage is 500mV
3) Unbalanced current
at TE:
∆
Idc = 1 mA max.
4) Longitudinal Conversion Loss:
10 kHz to 300 kHz is 60dB min.
Schematic T-13500 thru T-13505
and T-13550 thru T-13555
Schematic T-13506 & T-13556
Package Dimensions in Inches (mm)
Specifications subject to change without notice.
For other values & Custom Designs, contact factory.
ISDNDULG - 4/99
Rhombus
Industries Inc.
15
15801 Chemical Lane, Huntington Beach, CA 92649-1595
Tel: (714) 898-0960
•
Fax: (714) 896-0971
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