Rhombus
Transformers & Magnetic Products
Industries Inc.
NAME:
SHEET:
DATE:
RHOMBUS P/N:
CUST P/N:
15801 Chemical Lane,
Huntington Beach, CA 92649-1595
Phone: (714) 898-0960 FAX: (714) 896-0971
www.rhombus-ind.com
5
2
1
6
4
3
7
Pri
Sec
1 OF 1
ISDN S Interface Transformer
Turns Ratio ( + 2% )
1CT : 2.5CT
*
SCHEMATIC
DIAGRAM
T-13403
12/09/98
PARAMETER
MIN.
MAX.
UNITS
Open Circuit Inductance
22
mHy
Leakage Inductance
30
Hy
Interwinding Capacitance (C
W/W
)
100
pF
Distributed Capacitance (C
D
)
150
pF
Primary DC Resistance
2.13
2.88
ohms
Secondary DC Resistance
4.93
6.67
ohms
Isolation (HI-POT)
2.0
K
V
RMS
TEST CONDITIONS:
Oscillation Voltage = 700mV
Oscillation Frequency = 10.0 KHz
Inductance measured on Primary winding. Pins 1 - 3.
*Short Pins 5 + 6
Flammability: Materials used in the
production of these units are UL94-VO
and meet requirements of IEC 695-2-2
needle flame test.
MEETS THE PULSE WAVEFORM
TEMPLATE OF CCITT I.430.
Primary is Line Side
Unbalanced current at TE:
Idc = 1 mA max.
Longitudinal Conversion Loss - 10KHz to 300
KHz: 60dB min.
PHYSICAL DIMENSIONS
inches (mm)
.740 (18.80)
.710 (18.03)
MAX.
.560
(14.22)
.110
(2.79)
TYP.
.010
(0.25)
TYP.
.020
(0.51)
TYP.
.100
(2.54)
TYP.
.400
(10.16)
MAX.
.360
(9.14)
MAX.
.560
(14.22)
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