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Dated : 12/01/2007
SEMTECH ELECTRONICS LTD.
(Subsidiary of Sino-Tech International Holdings Limited, a company
listed on the Hong Kong Stock Exchange, Stock Code: 724)
®
Admissible power dissipation
versus ambient temperature
Valid provided that leads at a distance of 8 mm from case
are kept at ambient temperature
400
300
200
100
0
100
200 C
Ptot
Tamb
LL 4448
o
mW
VF
10 -1
1
10
2
10
3
10
LL 4448
i F
Forward characteristics
5
10 4
2
5
2
2
10
10
LL 4448
rf
Tj=25 C
f=1KHz
-2
10
02 V
10 3
5
2
5
2
1
-2
10
-1
10
1
10
10 mA
2
IF
0
500
600
700
800
900
1000
0.7
0.8
0
VR
6
010 V
1.1
1.0
0.9
Ctot(VR)
Ctot(0V)
LL 4448
Relative capacitance
versus reverse voltage
24
8
Dynamic forward resistance
versus forward current
o
Tj=25 C
o
Tj=100 C
o
1
Tj=25 C
f=1MHz
o
mA
LS4448
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