Specifications subject to change without notice.

Please check our website for latest information.

Document 621-1

Document 621-1 Revised 11/09/15

Dimensions are in

inches

mm

For Flyback, SEPIC, Zeta

and other Applications

• Tightcoupling(k

≥0.97)and200VisolationmaketheMSD7342

series of coupled inductors ideal for use in a variety of circuits

including flyback, multi-output buck and SEPIC.

• They provide high inductance, high efficiency and excellent

current handling in a rugged, low cost part.

• Can also be used as two single inductors connected in series

or parallel, as a common mode choke or as a 1 : 1 transformer.

0.295

7,5

max

0.295

7,5

max

max

Dot indicates

pin 1

0.028

0,7

0.181

4,6

123

0.110

2,8

0.083

2,1

0.130

3,3

0.043

1,10

1

4

2

3

3

1

2

4

L1

L2

Recommended

Land Pattern

0.150

3,8

0.091

2,3

0.063

1,6

1

4

2

3

If board traces

are runin these

areas, consider

masking them to

prevent shorting.

L1

L2

+

+

–

–

D

C

C

Typical Flyback Converter

SW

L1

L2

++

+

––

–

D

D

C

C

SW

Typical Buck Converter with auxiliary output

AUX

Typical Zeta schematic

L1

L2

Q

C1

CC

++

––

D

Typical SEPIC schematic

L1

L2

Q

C1

C

C

++

––

D