53D331K datasheet(3/4 Pages) LEIDITECH

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MOV 03

Revision: November 13, 2011

LA Varistor Series

Speciﬁcations are subject to change without notice.

Please refer to www.littelfuse.com/series/la.html for current information.

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

Current Energy and Power Dissipation Ratings

Peak Pulse CurrentTest Waveform

100

TIME

Example

µs Current Waveform:

8µ

20µ

100

-555060708090100 110120 130140 150

AMBIENTTEMPERATURE ( oC)

Figure 1A - Power Derating for Epoxy Coated

Figure 2

100

-555060708090100 110120 130140 150

AMBIENTTEMPERATURE ( oC)

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.

Figure 1B - Power Derating for Pholenic Coated

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