Modem Coupling and Voiceband Transformers
Low Distortion
Isolation is
1500VRMS Min.
Designed to
meet FCC part 68
Frequency Range:
300Hz to 3500Hz
Low Profile Package
Custom Designs
Available
Electrical Specifications at 25OC
Parameter
Impedance
R Load
Turns Ratio
Direct Current in Pri. (DCI)
DC Resistance
Insertion Loss
Return Loss
Longitudinal Balance
Frequency Response
Isolation
Schematic Style
PRI.
SEC.
maximum
PRI. + 10%
SEC. + 10%
max., ref. 1 kHz
min., @ 300 Hz
min., 200Hz to 4kHz
300 Hz to 3.5 kHz
minimum
Schematic
"C"
PRI
1A
SEC
2A
3A
5A
4A
6A
1B
5B
2B
6B
3B
4B
T-31107
600
365
1:1
80
95
180
2.0
15
60
+ 0.25
1500
C
T-31108
600
470
1:1
80
95
180
2.1
26
60
+ 0.25
1500
D
Schematic
"D"
1A
5A
2A
6A
1B
5B
2B
6B
Units
Ω
Ω
mA
Ω
Ω
dB
dB
dB
dB
VRMS
1.65
(40.64)
.525
(13.34)
TYP.
1.20
(30.48)
2
1
4
Coil B
3
6
5
5
6
3 Coil A
4
1
2
.250
(5.72)
.200
(5.08)
TYP
Split-Bobbin Style
Package
.250" x 2 Equal
Spacing
1.025
(26.04)
.200" X 8 Equal
Spacing
Specifications subject to change without notice.
Rhombus
Industries Inc.
For other values & Custom Designs, contact factory.
COUPLNG3 - 11/98
15801 Chemical Lane, Huntington Beach, CA 92649-1595
7
Tel: (714) 898-0960 • Fax: (714) 896-0971