Bel Fuse Inc. 198 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
MODEM MAGNETICS
2000 Bel Fuse Inc. Specifications subject to change without notice. 05.00
TM00404
T4-9
PCMCIA V.90 Transformers
Designed to match a 600
line to a 290
load while
providing isolation and balance in PCMCIA Type II
V.90 modem applications
Approved by UL and CSA
Minimum interwinding breakdown voltage of 1000 Vrms
Qualified per Bellcore TR-TSY-000357-1
SCHEMATIC
ELECTRICAL SPECIFICATIONS AT 25 C
1
3
6
4
Primary
Secondary
TYPICAL SPICE TRANSMISSION MODEL
1.4 mH
145
20 pF
25 k
3.0 H
20 pF
175
1
3
6
4
2786A
2786A3
2786A5
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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
MODEM MAGNETICS
2000 Bel Fuse Inc. Specifications subject to change without notice. 05.00
TM00404
T4-10
PCMCIA V.90 Transformers
MECHANICALS
Terminal 1
Identifier
1
3
6
4
0.560 [14.22]
max
0.330
[8.38] 0.200
[5.08]
0.096 [2.44]
0.040
[1.02]
ref
0.750 [19.05] ref
0.172
[4.37]
max
.025
[0.635]
max
Note: Unless otherwise specified, dimensions
are nominal and in inches [millimeters].
2786A
2786A5
2786A3
0.180 [4.57]
max
0.040
[1.02]
0.005
[0.127]
0.750
[19.05]
ref
0.052 [1.32]
0.172 [4.37]
max
0.040
[1.02]
0.750 [19.05] ref
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