V20E420L4B7 Datasheet, PDF (3/11 Pages) Littelfuse – Radial Lead Varistors > UltraMOVTM Series

Varistor Products
Radial Lead Varistors > UltraMOV^TM Series
UltraMOV™ Series Ratings & Specifications (Continued...)
Part Number
V14E460P
Branding
P14V460
Maximum Rating (85°C)
Continuous
Transient
RMS DC Energy
Volts Volts 2ms
Peak Current
8 x 20μs
V
M(AC)
(V)
460
V
. %$
(V)
615
W
TM
(J)
180
I
I
TM
TM
1 x Pulse 2 x Pulse
(A)
(A)
6000
4500
Specifications (25°C)
Varistor Voltage
at 1mA DC Test
Current
Maximum
Clamping
Voltage
8 x 20μs
V_NOM
V_NOM
V
I
Min Max
C
PK
(V)
(V)
(V)
(A)
675
825 1240 50
Typical
Capacitance
f = 1MHz
(pF)
220
V20E460P
P20V460 460
615
360
10000 6500
675
825 1240 100
400
V07E510P
P7V510 510
670
52
1750
1200
738
902 1355 10
40
V10E510P
P10V510 510
670
92
3500
2500
738
902 1355 25
110
V14E510P
P14V510 510
670
185
6000
4500
738
902 1355 50
200
V20E510P P20V510 510
670
365
10000 6500
738
902 1355 100
350
V10E550P P10V550 550
745
95
3500
2500
819 1001 1500 25
100
V14E550P P14V550 550
745
190
6000
4500
819 1001 1500 50
180
V20E550P P20V550 550
745
370
10000 6500
819
1001 1500 100
300
V10E625P
P10V625 625
825
100
3500
2500
900
1100 1650
25
90
V14E625P
P14V625 625
825
200
6000
4500
900
1100 1650
50
160
V20E625P
P20V625 625
825
400
10000 6500
900
1100 1650 100
250
NOTE: 1. Average power dissipation of transients should not exceed 0.25W, 0.4W, 0.6W and 1.0W for 7mm, 10mm, 14mm, and 20mm model sizes, respectively.
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
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Figure 1A - Power Derating for Epoxy Coated
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)
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)
Peak Pulse Current Test Waveform
100
90
50
10
O₁
Figure 2
T
T₁
T₂
TIME
©2012 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/tmov.html for current information.
0₁ = Virtual Origin of Wave
T = Time from 10% to 90% of Peak
T = Rise Time = 1.25 x T
1
T₂

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Example - For an 8/20 μs Current Waveform:
8μs = T₁ = Rise Time
20μs = T₂

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Revision: February 9, 2012
UltraMOV™ Varistor Series