Safe operating area, Derating curve, Transient thermal impedance – Diodes FZT857 User Manual
Page 3: Pulse power dissipation
FZT857
Document Number DS33177 Rev. 6 - 2
3 of 7
February 2013
© Diodes Incorporated
FZT857
A Product Line of
Diodes Incorporated
Thermal Characteristics and Derating Information
100m
1
10
100
10m
100m
1
10
Single Pulse T
amb
=25°C
52mmX52mm
Single sided 2oz Cu
V
CE(sat)
Limit
100µs
1ms
10ms
100ms
1s
DC
Safe Operating Area
I
C
Col
le
ct
or Cur
rent
(
A
)
V
CE
Collector-Emitter Voltage (V)
0
20
40
60
80 100 120 140 160
0.0
0.5
1.0
1.5
2.0
2.5
3.0
25mmX25mm
Single sided 1oz Cu
52mmX52mm
Single sided 2oz Cu
Derating Curve
Temperature (°C)
M
a
x P
o
wer
Di
ss
ipat
ion (W
)
100µ
1m
10m 100m
1
10
100
1k
0
10
20
30
40
52mmX52mm
Single sided 2oz Cu
Transient Thermal Impedance
D=0.5
D=0.2
D=0.1
Single Pulse
D=0.05
T
h
e
rm
a
l Re
si
st
a
nce
(
°C
/W
)
Pulse Width (s)
100µ
1m
10m 100m
1
10
100
1k
1
10
100
Single Pulse T
amb
=25°C
52mmX52mm
Single sided 2oz Cu
Pulse Power Dissipation
Pulse Width (s)
M
a
x P
o
wer Di
ss
ipat
ion (
W
)