Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com

HIGH FREQUENCY MAGNETICS

©2002 Bel Fuse Inc. Specifications subject to change without notice. 04.02

TM02130

page 1

DS3/E3/STS-1 Transformers

SCHEMATICS

ELECTRICAL SPECIFICATIONS at 25° C

S554-6500-25

•

Optimized for line transceivers operating at E3, DS3

or STS-1 rates: 34.368 Mb/s, 44.736 Mb/s, 51.84 Mb/s

•

S554-6500-25 and S554-6500-26 are surface mount,

industrial temperature replacements for S554-3184-00

and S554-3184-02 transformers respectively

•

Meet ITU-T G.703 return loss from -40° to +85° C

from 860 kHz to 51.55 MHz

•

UL 1950 approved: file number E150991

•

Operating temperature range -40° to +85°C

•

Meets IEC 695, 2-2 flammability requirements

•

PWB Process Capability: standard printed wiring board

assembly techniques, total-immersion cleaning

•

Reliability testing: Shock, vibration, temperature cycling,

temperature - humidity - bias

•

Interwinding breakdown voltage: 1500 Vrms min

1. Terminated in 75

Ω for 1 : 1 ratio and 300 Ω for 1 : 2 ratio

S554-6500-26

S554-6500-30

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