Safe operating area, Derating curve, Transient thermal impedance – Diodes FMMT493 User Manual
Page 3: Pulse power dissipation
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FMMT493
Document number: DS33093 Rev. 4 - 2
3 of 7
April 2013
© Diodes Incorporated
FMMT493
A Product Line of
Diodes Incorporated
Thermal Characteristics and Derating Information
1
10
100
1m
10m
100m
1
15 x 15mm FR4
1oz Copper
V
CE(sat)
Limit
100µs
1ms
10ms
100ms
1s
DC
Safe Operating Area
-I
C
Col
le
ct
or
Cu
rre
n
t (A
)
-V
CE
Collector-Emitter Voltage (V)
0
20
40
60
80 100 120 140 160
0.0
0.1
0.2
0.3
0.4
0.5
0.6
15 x 15mm FR4 1oz Copper
Derating Curve
Temperature (°C)
M
a
x
P
o
we
r Di
ssi
pa
tion
(W
)
100µ
1m
10m 100m
1
10
100
1k
0
40
80
120
160
200
240
15 x 15mm FR4 1oz Copper
Transient Thermal Impedance
D=0.5
D=0.2
D=0.1
Single Pulse
D=0.05
T
herm
al
Re
si
st
an
ce
(°
C/
W
)
Pulse Width (s)
100µ
1m
10m 100m
1
10
100
1k
0.1
1
10
100
15 x 15mm FR4 1oz Copper
Pulse Power Dissipation
Pulse Width (s)
M
a
x P
o
we
r Di
ssi
pa
tion
(W
)
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