Diodes FCX491 - Manual (Page 3)

FCX491
Document number: DS33054 Rev. 5 - 2
3 of 7
www.diodes.com
April 2014
© Diodes Incorporated
FCX491
A Product Line of
Diodes Incorporated
Thermal Characteristics and Derating Information
0 25 50 75 100 125 150
0.0
0.2
0.4
0.6
0.8
1.0
Derating Curve
Temperature (°C)
M
ax P
ow
e
r Di
ss
ip
at
io
n (
W
)
100µ 1m 10m 100m 1 10 100 1k
0
20
40
60
80
100
120
Transient Thermal Impedance
D=0.5
D=0.2
D=0.1
Single Pulse
D=0.05
T
he
rm
a
l R
es
ist
anc
e (
°C
/W)
Pulse Width (s)
100µ 1m 10m 100m 1 10 100 1k
1
10
100
Single Pulse. T
amb
=25°C
Pulse Power Dissipation
Pulse Width (s)
M
ax P
ow
er Di
ss
ipat
ion
(W
)
0 500 1000 1500 2000 2500
0
1
2
3
0 500 1000 1500 2000 2500
40.0
60.0
80.0
100.0
120.0
140.0
2oz copper
1oz copper
T
amb
=25°C
Copper Area (sqmm)
Ma
xi
mu
m Po
w
e
r (
W
)
2oz copper
1oz copper
T
amb
=25°C
Copper Area (sqmm)
T
he
rm
al
Re
si
st
an
ce
(
°C/
W
)