Self-Shielded
Audio Transformers
Using EP Geometry cores,
these transformers provide
excellent shielding.
Isolation is 1500 Vrms minimum
Longitudinal Balance is 60dB min.
Frequency range: 300Hz to 3400Hz
Electrical Specifications at 25
O
C
Thru-hole
EP7 Style
Part Number
T-30400
Impedance
(Ohms)
600 / 600
UNBAL. Insertion Frequency
Response
DC
Loss
(dB)
(mA)
(dB)
(1)
0.0
0.7
0.50
Return
Loss
(dB)
(2)
18
Pri.
Sec.
DCR max. DCR max.
(Ω )
(Ω )
31
39
Electrical Specifications at 25
O
C
Thru-hole
EP10 Style
Part Number
T-30401
Impedance
(Ohms)
600 / 600
UNBAL. Insertion Frequency
Response
DC
Loss
(dB)
(mA)
(dB)
(1)
0.0
0.9
0.50
Return
Loss
(dB)
(2)
21
Pri.
Sec.
DCR max. DCR max.
(Ω )
(Ω )
34
43
Electrical Specifications at 25
O
C
Thru-hole
EP13 Style
Part Number
.465
(11.81)
MAX.
.375
(9.53)
MAX.
Impedance
(Ohms)
600 / 600
900 / 900
UNBAL. Insertion Frequency
Response
DC
Loss
(1)
(dB)
(mA)
(dB)
0.0
0.0
1.0
1.0
0.25
0.25
Return
Loss
(dB)
(2)
26
26
Pri.
Sec.
DCR max. DCR max.
(Ω )
(Ω )
36
44
47
58
T-30402
T-30403
EP7 Style
Thru-hole
.394
(10.00)
MAX.
1. Insertion Loss measured at 1 kHz.
2. Return Loss measured at 300 Hz.
.110
(2.79)
MIN.
.080
(2.03)
T-30400
Schematic
1
4
1
T-30401
Schematic
5
2
T-30402 & 30403
Schematic
7
.098
.024
(2.49) (0.61)
6
5
4
PRI
.039
(0.99)
SEC.
6
PRI
SEC.
8
PRI
SEC.
3
4
4
9
Bottom
View
1
2
3
Dimensions in Inches (mm)
.480
(12.19)
MAX.
.450
(11.43)
MAX.
.550
(13.97)
MAX.
EP13 Style
Thru-hole
.536
(13.61)
MAX.
EP10 Style
Thru-hole
.460
(11.68)
MAX.
.525
(13.34)
MAX.
.210
(5.33)
TYP.
.100
(2.54)
TYP.
.300
(7.62)
TYP.
Pin Diameter is 0.025 (0.64)
10
9
8
.210
(5.33)
TYP.
.100
(2.54)
TYP.
7
6
.400
(10.16)
TYP.
Pin Diameter is 0.025 (0.64)
8
7
6
5
Bottom
View
Bottom
View
4
1
2
3
4
5
1
2
3
Specifications subject to change without notice.
For other values & Custom Designs, contact factory.
EP - 10/98
Rhombus
Industries Inc.
15
15801 Chemical Lane, Huntington Beach, CA 92649-1595
Tel: (714) 898-0960
•
Fax: (714) 896-0971
RHOMBUS-IND [ Rhombus Industries Inc. ]
