V130LC5P Datasheet, PDF (4/13 Pages) Littelfuse – LA Varistor Series

Varistor Products
Radial Lead Varistors > LA Series
Copper Electrode Option:
• Add 'W' to the end of the part number (e.g. V230LA20APW)
• Product marking:
LF 9
P230L20W
Lead-Free,
Halogen-Free
& RoHS Compliant
Indicator
YYWW
Copper Electrode
Option
Identifier
Current Energy and Power Dissipation Ratings
Should transients occur in rapid succession, the average
power dissipation is the energy (watt-seconds) per pulse
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
100
90
80
70
60
50
40
30
20
10
0
-55 50 60 70 80 90 100 110 120 130 140 150
AMBIENTTEMPERATURE ( ^oC)
FIGURE 1. CURRENT, ENERGY AND POWER DERATING
Peak Pulse Cu^Crr^Ue^Rn^Vt^ETest Waveform
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 Phenolic Coated
100
90
80
70
60
50
40
30
20
10
0
-55 50 60 70 80 90 100 110 120 130 140 150
AMBIENTTEMPERATURE ( ^oC)
FIGURE 1. CURRENT, ENERGY AND POWER DERATING
CURVE
100
90
50
10
O₁
Figure 2
T
T₁
T₂
TIME
0₁ = Virtual Origin of Wave
T = Time from 10% to 90% of Peak
T₁ = Rise Time = 1.25 x T
T₂ = Decay Time
Example - For an 8/20 µs Current Waveform:
8µs = T₁ = Rise Time
20µs = T₂ = Decay Time
O₁ = Virtual Origin of Wave
T = Time From 10% to 90% of Peak
T₁ = Virtual Front time = 1.25 • t
T₂ = Virtual Time to Half Value (Impulse Duration)
Example: For an 8/20µs Current Waveform:
8 s = T₁ = Virtual Front Time
20 s = T₂ = Virtual Time to Half Value
FIGURE 2. PEAK PULSE CURRENT TEST WAVEFORM
© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 11/12/14