Low Cost Multi-Purpose
Audio Transformers
Impedance matching transformers for
telecommunications.
Ideal for a variety of voice and data
interconnect networks
Isolation is 1500 V
RMS
minimum
Longitudinal Balance is 60dB minimum
Frequency range: 300Hz to 3400Hz
Designed to meet FCC part 68
Custom Designs Available
Insertion
(1)
Loss
(dB)
1.25
1.25
1.25
1.25
1.25
2.0
2.0
0.4
0.4
0.4
0.5
0.5
2.0
2.0
Frequency
Response
(dB)
0.5
0.5
0.5
0.5
0.5
3.0
3.0
0.25
0.25
0.25
0.25
0.25
3.0
3.0
Return
(2)
Loss
(dB)
26
26
26
26
26
9.0
9.0
26
26
26
26
26
9.0
9.0
Pri.
DCR max.
(Ω)
30
30
30
30
40
65
65
13
13
13
13
19
57
57
Sec.
DCR max.
(Ω)
40
40
40
73
53
85
85
16
16
16
23
23
75
75
Electrical Specifications at 25
O
C
Part
Number
T-30000
T-30001
T-30007
T-30002
T-30003
T-30004
T-30005
T-30050
T-30051
T-30057
T-30052
T-30053
T-30054
T-30055
Impedance
(Ohms)
600 / 600
600 / 600CT
600CT / 600CT
600 / 900
900 / 900
600 / 600
600 / 600CT
600 / 600
600 / 600CT
600CT / 600CT
600 / 900
900 / 900
600 / 600
600 / 600CT
UNBAL.
DC
(mA)
0.0
0.0
0.0
0.0
0.0
80
80
0.0
0.0
0.0
0.0
0.0
80
80
Schem.
Style
A
B
C
A
A
A
B
A
B
C
A
A
A
B
1. Insertion Loss measured at 1 kHz.
2. Return Loss measured at 300 Hz.
Schematic
"A"
1
PRI
.785
(19.94)
.620
(15.75)
6
SEC.
.725
(18.42)
3
4
Schematic
"B"
1
PRI
Schematic
"C"
6
.187
(4.75)
TYP.
.016
(0.41)
.420
(10.67)
1
PRI
6
SEC.
SEC.
.042
(1.07)
TYP.
.187
(4.75)
TYP.
5
3
4
2
3
5
1
2
3
Dimensions in Inches (mm)
Unused Pins Omitted
as Per Schematic
4
Bottom View
6
5
4
Specifications subject to change without notice.
For other values & Custom Designs, contact factory.
LC-AUDIO - 11/98
Rhombus
Industries Inc.
11
15801 Chemical Lane, Huntington Beach, CA 92649-1595
Tel: (714) 898-0960
•
Fax: (714) 896-0971
RHOMBUS-IND [ Rhombus Industries Inc. ]
