Zxmn20b28k, Thermal characteristics, Safe operating area – Diodes ZXMN20B28K User Manual
Page 3: Derating curve, Transient thermal impedance, Pulse power dissipation
ZXMN20B28K
Document Number DS31984 Rev. 2 - 2
3 of 8
October 2009
© Diodes Incorporated
A Product Line of
Diodes Incorporated
ZXMN20B28K
Thermal Characteristics
100µ
1m
10m 100m
1
10
100
1k
0
10
20
30
40
50
60
1
10
100
1m
10m
100m
1
10
1
10
100
1m
10m
100m
1
10
T
amb
=25°C
25mm x 25mm
1oz FR4
R
DS(on)
Limited
100µs
1ms
10ms
100ms
1s
DC
Safe Operating Area
I
D
Drai
n Curr
en
t (
A
)
V
DS
Drain-Source Voltage (V)
0
20
40
60
80
100 120 140 160
0
1
2
3
4
50mm x 50mm
2oz FR4
25mm x 25mm
1oz FR4
Derating Curve
Temperature (°C)
M
a
x
P
ower
Di
s
s
ip
at
ion (W)
100µ
1m
10m 100m
1
10
100
1k
0
5
10
15
20
25
30
35
T
amb
=25°C
25mm x 25mm
1oz FR4
Transient Thermal Impedance
D=0.5
D=0.2
D=0.1
Single Pulse
D=0.05
T
h
e
rm
a
l Re
si
st
a
n
ce
(°
C/
W
)
Pulse Width (s)
100µ
1m
10m 100m
1
10
100
1k
1
10
100
25mm x 25mm
1oz FR4
50mm x 50mm
2oz FR4
Safe Operating Area
Single Pulse
T
amb
=25°C
Pulse Power Dissipation
Pulse Width (s)
M
a
x
P
ower
Di
s
s
ip
at
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)
T
h
e
rm
a
l R
e
si
st
a
n
ce
(°
C
/W)
T
amb
=25°C
50mm x 50mm
2oz FR4
100µs
1ms
10ms
100ms
1s
DC
R
DS(on)
Limited
V
DS
Drain-Source Voltage (V)
I
D
D
rain C
u
rr
e
n
t (
A
)