MUR805, MUR810, MUR815, MUR820, MUR840, MUR860
MUR840
100
IR, REVERSE CURRENT (
m
A)
70
50
1000
T
J
= 175°C
150°C
10
100°C
25°C
1.0
100
30
i F , INSTANTANEOUS FORWARD CURRENT (AMPS)
20
0.1
0.01
0
50
100
150
200
250
300
350
400
450 500
V
R
, REVERSE VOLTAGE (VOLTS)
10
7.0
5.0
T
J
= 175°C
3.0
100°C
2.0
IF(AV) , AVERAGE FORWARD CURRENT (AMPS)
10
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0
140
150
160
170
180
T
C
, CASE TEMPERATURE (°C)
SQUARE WAVE
dc
RATED V
R
APPLIED
25°C
Figure 7. Typical Reverse Current*
* The curves shown are typical for the highest voltage device in the
grouping. Typical reverse current for lower voltage selections can be
estimated from these same curves if V
R
is sufficiently below rated V
R
.
1.0
0.7
0.5
0.3
0.2
0.1
0.4
0.6
0.8
1.0
1.2
1.4
1.6
v
F,
INSTANTANEOUS VOLTAGE (VOLTS)
Figure 6. Typical Forward Voltage
Figure 8. Current Derating, Case
PF(AV) , AVERAGE POWER DISSIPATION (WATTS)
IF(AV) , AVERAGE FORWARD CURRENT (AMPS)
14
12
10
8.0
6.0
4.0
2.0
0
0
20
40
60
80
100
120
140
160
180
200
T
A
, AMBIENT TEMPERATURE (°C)
SQUARE WAVE
dc
SQUARE WAVE
dc
R
qJA
= 16°C/W
R
qJA
= 60°C/W
(NO HEAT SINK)
10
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0
0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10
I
F(AV)
, AVERAGE FORWARD CURRENT (AMPS)
SQUARE WAVE
dc
T
J
= 175°C
Figure 9. Current Derating, Ambient
Figure 10. Power Dissipation
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