V20E420 Littelfuse Inc, V20E420 Datasheet - Page 3

• Manufacturer Part Number: V20E420
• Description: VARISTR 420VRMS 6500A 20MM STRGT
• Manufacturer: Littelfuse Inc
• Series: Ultra MOVr

Specifications of V20E420

• Varistor Voltage: 748V
• Current-surge: 6.5kA
• Number Of Circuits: 1
• Maximum Ac Volts: 420VAC
• Maximum Dc Volts: 560VDC
• Energy: 320J
• Package / Case: Disc 20mm
• Suppressor Type: High Surge Current
• Peak Surge Current @ 8/20µs: 10000A
• Varistor Case: 20mm DISC
• Clamping Voltage Vc Max: 1120V
• Voltage Rating Vdc: 560V
• Voltage Rating Vac: 420V
• Product: MOV
• Voltage Rating Dc: 560 V
• Voltage Rating Ac: 420 V
• Clamping Voltage: 1.12 KV
• Peak Surge Current: 10 KA
• Surge Energy Rating: 1120 J
• Capacitance: 600 pF
• Operating Temperature Range: - 55 C to + 85 C
• Mounting: Radial
• Dimensions: 20 mm Dia.
• Termination Style: Radial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant, Lead free / RoHS Compliant

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.
©2011 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/tmov.html for current information.
UltraMOV™ Series Ratings & Specifications
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
need to be derated at high temperatures as shown in
above. Because varistors can only dissipate a relatively
small amount of average power they are, therefore,
not suitable for repetitive applications that involve
substantial amounts of average power dissipation.
Current Energy and Power Derating Curve
Part Number
Figure 1
V07E460P
V10E460P
V14E460P
V20E460P
V07E510P
V20E510P
V10E550P
V14E550P
V20E550P
V10E625P
V14E625P
V20E625P
V10E510P
V14E510P
100
90
80
70
60
50
40
30
20
10
0
-55
50
Branding
60
P20V460
P20V550
P20V625
P10V460
P14V460
P10V510
P14V510
P20V510
P10V550
P14V550
P10V625
P14V625
P7V460
P7V510
AMBIENT TEMPERATURE (
70
80
RMS
Volts
V
460
460
460
460
550
550
550
625
625
625
510
510
510
510
90
(V)
Continuous
M(AC)
100 110
V
Volts
615
615
615
615
670
670
670
670
745
745
745
825
825
825
DC
(V)
Maximum Rating (85°C)
120 130 140 150
Varistor Products
o
Radial Lead Varistors > UltraMOV
C)
Energy
2ms
W
200
400
180
360
185
365
190
370
100
(J)
48
90
52
92
95
TM
(Continued...)
Transient
1 x Pulse
Revision: March 30, 2011
10000
10000
10000
10000
6000
6000
6000
6000
1750
3500
1750
3500
3500
3500
(A)
I
Peak Current
TM
8 x 20μs
2 x Pulse
2500
4500
6500
2500
4500
6500
2500
4500
6500
2500
4500
6500
1200
1200
Peak Pulse Current Test Waveform
Figure 2
(A)
I
TM
0
T = Time from 10% to 90% of Peak
T
T
Example - For an 8/20 μs Current Waveform:
Varistor Voltage
1
1
2
at 1mA DC Test
V
Min
675
675
675
675
738
738
738
738
819
819
819
900
900
900
= Virtual Origin of Wave
= Rise Time = 1.25 x T
(V)
O
NOM
100
1
8μs = T
20μs = T
90
50
10
Current
TM
V
1001
1001
1001
1
Max
1100
1100
1100
825
825
825
825
902
902
902
902
(V)
2
NOM
= Rise Time
Series
T
Specifications (25°C)
T
1
T
1240
1240
1240
1240
1355
1355
1355
1355
1500
1500
1500
1650
1650
1650
2
(V)
V
Maximum
Clamping
C
8 x 20μs
Voltage
100
100
100
100
(A)
25
50
25
50
25
50
25
50
I
10
10
PK
UltraMOV™ Varistor Series
TIME
Capacitance
f = 1MHz
Typical
(pF)
120
220
400
200
350
180
300
160
250
110
100
45
40
90