Fzt649, Thermal characteristics and derating information, Safe operating area – Diodes FZT649 User Manual
Page 3: Derating curve, Transient thermal impedance, Pulse power dissipation
FZT649
Document Number DS33148 Rev. 5 - 2
3 of 7
March 2014
© Diodes Incorporated
A Product Line of
Diodes Incorporated
FZT649
Thermal Characteristics and Derating Information
100µ
1m
10m 100m
1
10
100
1k
0
10
20
30
40
50
60
70
1
10
10m
100m
1
10
1
10
10m
100m
1
10
T
amb
=25°C
25mm x 25mm
2oz FR4
V
CE(sat)
Limit
100µs
1ms
10ms
100ms
1s
DC
Safe Operating Area
I
C
Co
lle
ct
or Cu
rre
nt
(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
50mm x 50mm
2oz FR4
25mm x 25mm
2oz FR4
Derating Curve
Temperature (°C)
M
ax
P
o
we
r Dis
si
pat
ion (
W
)
100µ
1m
10m 100m
1
10
100
1k
0
10
20
30
40
50
T
amb
=25°C
25mm x 25mm
2oz FR4
Transient Thermal Impedance
D=0.5
D=0.2
D=0.1
Single Pulse
D=0.05
T
he
rm
al
Re
si
st
a
nce
(
°C/
W
)
Pulse Width (s)
100µ
1m
10m 100m
1
10
100
1k
1
10
100
25mm x 25mm
2oz FR4
50mm x 50mm
2oz FR4
Safe Operating Area
Single Pulse
T
amb
=25°C
Pulse Power Dissipation
Pulse Width (s)
M
ax
P
o
we
r Dis
si
pat
ion (
W
)
D=0.1
D=0.05
Single Pulse
D=0.2
D=0.5
T
amb
=25°C
50mm x 50mm
2oz FR4
Transient Thermal Impedance
Pulse Width (s)
The
rm
al
R
es
is
tanc
e (
°C/
W)
T
amb
=25°C
50mm x 50mm
2oz FR4
100µs
1ms
10ms
100ms
1s
DC
V
CE(sat)
Limit
V
CE
Collector-Emitter Voltage (V)
I
C
Co
lle
ct
or
Cu
rren
t (A
)