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