Datasheet

1.1 Characteristics (curves)
Figure 1. Average forward power dissipation versus
average forward current
P (W)
F(AV)
T
δ
=tp/T
tp
I
(A)
F(A V)
δ = 1
δ = 0.1
δ = 0.5
δ = 0.2
δ = 0.05
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
1.1
1.2
1.4
1.6
1.8
2.0
2.2
2.4
2.6
Figure 2. Average forward current versus ambient
temperature (δ = 0.5)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
2.2
0
25 50 75 100 125 150
I (A)
F(AV)
T
δ
=tp/T
tp
(°C)T
am
th(j-a)
th(j-a)
=100° C/W
R
b
R
R =
th(j-l)
SMB
Figure 3. Normalized avalanche power derating versus
junction temperature (T
j
= 125 °C)
P (t
p
)
P (10 µs)
ARM
ARM
0.001
0.01
0.1
1
1 10 100 1000
t (µs)
p
Figure 4. Relative variation of thermal impedance junction
to ambient versus pulse duration
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.E-02 1.E-01 1.E+00 1.E+01 1.E+02 1.E+03
Single pulse
SMB
t (s)
p
Z
th(j-a)
/R
th(j-a)
STPS2L25
Characteristics (curves)
DS1245 - Rev 7
page 3/12
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