RHOMBUS-IND T

Voice & Data Coupling Transformers
Impedance Matching Transformers for Telecommunications
Low Distortion
Frequency 300Hz to 3500Hz
May be used in V.32 applications
Designed to meet FCC part 68
Isolation is 1500 VRMS min.
Custom Designs Available
Secondary load 600 Ω with DC in Pri.
Part
Number
Impedance
PRI.
SEC.
(Ω)
(Ω)
T-31000
T-31001
T-31002
T-31003
T-31004
T-31005
T-31006
T-31010
T-31011
T-31012
T-31013
T-31014
600
600
600
900
900
900
900
600
600
900
900
600
600
600
600
600
600
600
600
600
600
600
600
600
Turns
Ratio
+ 2%
DCI
max.
(mA)
Insertion
Loss (1)
(dB)
Return (2)
Loss
(dB)
THD (3)
(dB)
DCR
PRI.
(Ω)
DCR
SEC.
(Ω)
1:1
1:1.127
1:1.127
1:0.817
1:0.817
1:0.942
1:0.942
1:1
1:1.125
1:.0816
1:0.946
1:1
80
80
80
80
80
80
80
80
80
80
80
80
1.50
1.00
1.30
1.55
1.60
1.20
1.30
1.20
1.25
1.50
1.55
1.20
11.5
14.5
12.5
11.0
10.5
12.5
11.0
13.0
16.0
9.5
12.0
13.0
-65
-65
-53
-65
-53
-65
-53
-53
-59
-53
-53
-53
55.0
55.0
67.0
76.0
76.0
83.0
83.0
66.2
76.0
82.8
90.0
66.0
65.0
70.0
76.0
92.0
92.0
126
126
82.2
86.0
85.4
110
82.0
1. Insertion Loss measured at 1 KHz
2. Return Loss measured at 300 Hz
3. Total Harmonic Distortion measured at 0 dBm & 300 Hz
4. Frequency Response measured from 300 Hz to 3500 Hz
PRI
SEC
2
PRI
7
8
1
7
2
6
Bottom
View
7
6
4
/
/
/
/
/
/
/
/
/
/
/
/
8-pin
8-pin
8-pin
8-pin
8-pin
8-pin
8-pin
12-pin
12-pin
12-pin
12-pin
12-pin
.200
(5.08)
SEC
1
A
B
B
A
A
B
B
C
D
C
D
D
1.00
(25.4)
2
3
3
0.5
0.3
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
8-Pin Package ( T-31000 to T-31006 )
Schematic "B"
Schematic "A"
Frequency (4)
Response
Schematic
( + dB )
Style / Pkg
6
3
5
4
.250
(6.35)
3 PL.
1.39
(35.30)
MAX.
Dimensions in Inches (mm)
1.69
(42.93)
MAX.
.750
(19.05)
TYP.
.150
(3.81)
TYP.
.680
(17.27)
Unused Pins Omitted as per Schematic
12-Pin Package ( T-31010 to T-31014 )
1.20
(30.48)
MAX.
Schematic "C"
PRI
1
.035
(0.89)
TYP.
Schematic "D"
SEC
PRI
7
1
7
SEC
12
6
1
.200
(5.08)
7
3
1.00
(25.4)
3
4
6
.125
(3.18)
TYP.
12
4
12
.400
(10.16)
6
.025
(0.63)
SQ.
.820
(20.83)
Specifications subject to change without notice.
Rhombus
Industries Inc.
1.41
(35.81)
MAX.
.950
(24.13)
For other values & Custom Designs, contact factory.
9
.930
(23.62)
MAX.
VDC_A - 10/98
15801 Chemical Lane, Huntington Beach, CA 92649-1595
Tel: (714) 898-0960 • Fax: (714) 896-0971