ADSL MAGNETICS
Transformer
•
•
Designed for the Globespan’s low-power ADSL chip set
UL and CSA approved
•
•
Operating temperature range of 0° C to +85° C
Minimum interwinding breakdown voltage of 1500 Vrms
TM99AF
ELECTRICALS at 25° C
DCR
Ω
max
Turns Ratio
± 3%
Part Number
TX : Line
RX : Line
Inductance
µ
H min
Leakage
Inductance*
µ
H max
Chip
Interwinding
Capacitance
pF max
Line
TX
2808J
1:4
1 : 2.05
25.0
7.0
1.60
2.40
30
* Measured at RX with line side shorted
SCHEMATIC
1
TX
3
2
RX
4
Chip
8
6
Line
7
5
Line
©1999 Bel Fuse Inc. Specifications subject to change without notice.
Bel Fuse Inc.
198 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
ADSL MAGNETICS
TM99AF
Transformer
MECHANICAL
2808J
0.600
[15.24]
0.400 [10.16]
0.200 [5.08]
0.200 [ 5.08]
ref
0.100 [2.54]
0.070 x 0.070
[1.78 x 1.78]
Terminal foot
1.060
[26.92]
max
0.102
[2.59]
1.060
[26.92]
Terminal 1
Identifier
0.760 [19.30]
max
Suggested PCB Pad Layout
0.394 [10.00]
max
Terminal Pad
0.070 x 0.070 nom
[1.78 x 1.78]
1
4
8
5
Note: Unless otherwise specified, dimensions
are nominal and in inches [millimeters].
Tape and reel packaging: 200 parts/reel
©1999 Bel Fuse Inc. Specifications subject to change without notice.
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 F23, Preston
Lancashire, PR1 8UD, U.K.
Tel 44-1772-556601
Fax 44-1772-888366
www.belfuse.com
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