V05E50P Datasheet, PDF (4/12 Pages) Littelfuse – Reduced footprint and volume required for surge protection

Metal-Oxide Varistors (MOVs)
Radial Leaded Varistors > LV UltraMOV^TM Varistor Series
Current Energy and Power Dissipation Ratings
Figure 1A - Power Derating for Epoxy Coated
For applications exceeding 85ºC ambient temperature,
the peak surge current and energy ratings must be
reduced as shown below.
Figure 1B - Power Derating for Phenolic Coated
For applications exceeding 125ºC ambient temperature,
the peak surge current and energy ratings must be
reduced as shown below.
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
Peak Pulse Current Test Waveform for Clamping Voltage
100
50
0
O₁
Figure 2
T
T₁
T₂
TIME
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
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 8/20µs Current Waveform:
8µs = T₁ = Rise Time
20µs = T₂ = Decay Time
FIGURE 2. PEAK PULSE CURRENT TEST WAVEFORM
FOR CLAMPING VOLTAGE
O₁ = VIRTUAL ORIGIN OF WAVE
t = TIME FROM 10% TO 90% OF PEAK
t₁ = VIRTUAL FRONT TIME = 1.25 x t
t₂ = VIRTUALTIME TO HALFVALUE
(IMPULSE DURATION)
EXAMPLE:
FOR AN 8/20 s CURRENT WAVEFORM
8 s = t₁ = VIRTUAL FRONT TIME
20 s = t₂ = VIRTUALTIME TO
HALF VALUE
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 11/04/15