Thermal characteristics – Diodes DMP4025LK3 User Manual
Page 3
DMP4025LK3
Document Number:35938 Rev. 3 - 2
3 of 8
www.diodes.com
March 2014
© Diodes Incorporated
ADVAN
CE I
N
F
O
RM
ATI
O
N
DMP4025LK3
Thermal Characteristics
0
20
40
60
80
100
120
140
160
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
P
,
P
O
WE
R
DI
SSI
P
A
T
IO
N (
W
)
D
T , AMBIENT TEMPERATURE (C)
Figure 1. Power Dissipation vs. Ambient Temperature
A
t1, PULSE DURATION TIME (sec)
Figure 2. Single Pulse Maximum Power Dissipation
0.001 0.01
0.1
1
10
100 1,000
0.0001
0
10
20
30
40
50
60
70
80
90
100
P
,
P
E
AK
T
R
AN
S
IE
N
T
P
O
IW
E
R
(W
)
(P
K
)
Single Pulse
R
= 70 C/W
R
= r * R
T - T = P * R
JA
JA(t)
(t)
JA
J
A
JA(t)
0.00001
0.0001
0.001
0.01
0.1
1
10
100
1,000
t1, PULSE DURATION TIMES (sec)
Figure 3. Transient Thermal Resistance
0.001
0.01
0.1
r(t),
T
R
ANS
IEN
T
T
H
E
R
MA
L
R
ESI
S
TAN
C
E
1
R
(t) = r(t) * R
R
= 70°C/W
Duty Cycle, D = t1/ t2
JA
JA
JA
D = 0.7
D = 0.9
D = 0.5
D = 0.3
D = 0.1
D = 0.05
D = 0.02
D = 0.01
D = 0.005
Single Pulse