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