CORPORATE

Bel Fuse Inc.

198 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

©2000 Bel Fuse Inc. Specifications subject to change without notice. 04.00

TM00149

T1-116

HIGH FREQUENCY MAGNETICS

DS3/E3/STS-1 Dual-ratio Surface Mount Transformer

2795M

MECHANICAL

Supplementary Information

Safety Agency Compatibility

Underwriters Laboratories, Inc. UL 1950

Surge Voltage Capability

10/700 µs; 10 repetitions of alternating polarity, generator output: peak voltage, 25

Ω source

Flammability Compliance

IEC-695, 2-2 (needle flame test), materials are UL 94 VO approved

Simulation Model

SPICE computer simulation file available on request

Surface-Mount Packaging

Tape and Reel; 16 mm wide by 12 mm pitch; 13 inch OD; 4 inch ID

650 transformers per reel, maximum

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

Terminal Lead Coplanarity

0.004 inch [0.10 mm]

PWB Process Capability

Machine placement (recommendation: locate by terminals, not body)

0.265

[6.73]

ref

A

6

54

12

3

Terminal 1 ID

0.020 [0.51]

0.073 [1.85]

A

0.240

[6.10] max

0.350

[8.90]

max

0.055

[1.40]

0.265

[6.73]

max

0.015 [0.40]

R0.023 [0.60]

0˚/8˚

No metallization

or solder mask

in cross-hatched

designated area

0.033 [0.84]

0.065

[1.65]

0.364

[9.25]

0.057

[1.45]

0.234

[5.95]

0.186

[4.72]

0.073 [1.85]

0.040 [1.02]

Suggested PCB Pad Layout

Note: Unless otherwise specified, dimensions

are nominal and in inches [millimeters].