CORPORATE

Bel Fuse Inc.

206 Van Vorst Street

Jersey City, NJ 07302

Tel

201-432-0463

Fax

201-432-9542

www.belfuse.com

FAR EAST

Bel Fuse Ltd.

8F / 8 Luk Hop Street

San Po Kong

Kowloon, Hong Kong

Tel

852-2328-5515

Fax 852-2352-3706

www.belfuse.com

EUROPE

Bel Fuse Europe Ltd.

Preston Technology Management Centre

Marsh Lane, Suite G7, Preston

Lancashire, PR1 8UD, U.K.

Tel

44-1772-556601

Fax 44-1772-888366

www.belfuse.com

HIGH FREQUENCY MAGNETICS

©2002 Bel Fuse Inc. Specifications subject to change without notice. 02.02

TM02129

page 2

DS3/E3/STS-1 Dual Transformers

0.485

[12.32]

max

0.375

[9.53]

max

0.285

[7.24]

max

0.018 ±0.002

[0.46 ±0.05]

0.225

[5.72]

max

0.050

[1.27]

0.003

[0.08]

min

0.350 ±0.010

[8.89 ±0.25]

0.008 - 0.012

[0.20 - 0.30]

0.035

[0.89]

6˚ nom

0.025

[0.64]

0.070

[1.78]

0.050

[1.27]

0.425

[10.80]

Suggested PCB Pad Layout

Dimensions are in inches [millimeters].

Standard dimension tolerance is ±0.005 [0.13] unless otherwise noted.

0.004 [0.10]

MECHANICAL

S554-6500-15

S554-6500-16

S554-6500-17

S554-6500-18

Tape and Reel Packaging

24 mm wide by 12 mm pitch; 13 inch OD, 4 inch ID

750 modules per reel, maximum

Meets ANSI/EIA 481-2 Carrier Tape Standards - JEDEC SO Package

S554-6500-17

S554-6500-18

Secondary

Primary

Coil A

Coil B

2CT : 1

1 : 1

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Coil A

Coil B

1 : 1

1 : 2CT

Secondary

Primary

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

SCHEMATICS