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 600Ω line to a 290Ω 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
traP rebmuN oitaRsnruT %2±
noitresnI ssoL Bd
ssoLnruteR Bd
ycneuqerF esnopseR Bd
RCDΩΩ
Ω
ΩΩxam
cinomraH noitrotsiD Bd
lanidutignoL ecnalaB Bd
zHk1@ zH0053-zH003 zHk5-zH002 irP ceS ,mBd01- zH006 zH0053-zH003
A68721:1<9.2>03<1.0561002>58>06
3A68721:1<
9.2>03<1.0561002>58>06
5A68721:1<
9.2>03<1.0561002>58>06
CORPORATE
Bel Fuse Inc.
198 V an V orst 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
K owloon, Hong K ong
Tel 852-2328-5515
Fax 852-2352-3706
www.belfuse.com
EUROPE
Bel Fuse Eur ope 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
