Diodes FMMT491A - Manual (Page 3)

FMMT491A
Document number: DS33092 Rev. 4 - 2
3 of 7
www.diodes.com
October 2012
© Diodes Incorporated
FMMT491A
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
Coll
ec
tor
Cur
rent
(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
w
e
r
Di
s
s
ipat
ion (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
a
l Res
is
tanc
e (
°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
wer Di
s
s
ipat
ion
(W
)