Current Energy and Power Dissipation Ratings
device. The operating values of a MOV need to be derated
at high temperatures as shown above. Because varistors
only dissipate a relatively small amount of average power
they are not suitable for repetitive applications that involve
substantial amounts of average power dissipation.
Should transients occur in rapid succession, the average
times the number of pulses per second. The power so
developed must be within the specifications shown on the
Device Ratings and Specifications Table for the specific
Figure 1A - Power Derating for Epoxy Coated
Figure 1B - Power Derating for Pholenic Coated
100
90
80
70
60
50
40
30
20
10
0
100
90
80
70
60
50
40
30
20
10
0
-55 50
60
70
80
90 100 110 120 130 140 150
o
-55
50
60
70
80
90 100 110 120 130 140 150
o
AMBIENTTEMPERATURE ( C)
AMBIENTTEMPERATURE ( C)
Peak Pulse CurrentTestWaveform
100
90
01
T1
T2
50
Example
8µ
µs Current Waveform:
1
20µ
2
10
O
T
TIME
1
T
1
Figure 2
T
2
All data is subject to change,Please check our data sheets at www.leiditech.com for updates.
MOV 04