T-1280 Datasheet, PDF (1/1 Pages) Rhombus Industries Inc. – ISDN U-INTERFACE TRANSFORMER

ISDN U-INTERFACE TRANSFORMER
Turns Ratio (9-7), (connect 10-6) : (5-1)
1.50 : 1
PARAMETER
Primary Inductance ¹
Pins 10 to 6 with 9 & 7 shorted.
MIN.
MAX.
UNITS
73
98
mH
Return Loss (10-25 kHz)
20
dB
DC Resistance (10-6) (Connect 9-7) 10.4
15.6
ohms
DC Resistance (5-1)
5.2
7.8
ohms
Isolation (Hi-Pot) (Line to Chip)
IDC
2000
V_RMS
40
mA
Longitudinal Balance 281 Hz - 40 kHz 55
dB
Above 40 kHz
-20 dB/decade
Surge Voltage Capability Metallic. @ 800 V Peak 10/700 µsec
Long. @ 2400 V Peak 10/560 µsec
Flammability: Materials used in
the production of these units
meet requirements of UL94-VO
and IEC 695-2-2 needle flame
test.
A Surface Mount Version of this
part is available
add suffix "G" to part number
Use with Lucent Technologies
chip sets T7256, T7234, T7237,
and T7264.
Physical Dimensions
inches (mm)
.470
(11.94)
MAX.
.100
(2.54)
MIN.
1
10
2
Top View
9
.920
(23.37)
3
8
MAX.
4
7
5
6
.040
(1.02)
TYP.
.150
(3.81)
TYP.
Terminal Dimensions
.020 (.051) X .040 (1.02) Typical.
Termination Numbers for Reference Only.
1.070
(27.18)
REF. _.900
(22.86)
REF.
Bottom View
.800
(20.32)
Schematic Diagram
Pri
Sec
9
5
Notch Indicates Pin #1
Chip
Side
1
6 _Line
10 ^Side
7
RHOMBUS P/N: ^T-1280
CUST P/N:
NAME:
DATE: 8/23/99
SHEET:
1 of 1
Rhombus
Industries Inc.
Transformers & Magnetic Products
15801 Chemical Lane, Huntington Beach, CA 92649
Phone: [phone]
www.rhombus-ind.com
FAX: [phone]