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V14E250P Datasheet(PDF) 3 Page - Littelfuse

Part # V14E250P
Description  Radial Lead Varistors
Download  11 Pages
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Manufacturer  LITTELFUSE [Littelfuse]
Direct Link  http://www.littelfuse.com
Logo LITTELFUSE - Littelfuse

V14E250P Datasheet(HTML) 3 Page - Littelfuse

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Varistor Products
©2010 Littelfuse, Inc.
Revision: August 4, 2010
UltraMOV™ Varistor Series
Radial Lead Varistors > UltraMOVTM Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/tmov.html for current information.
Part Number
Branding
Maximum Rating (85°C)
Specifications (25°C)
Continuous
Transient
Varistor Voltage
at 1mA DC Test
Current
Maximum
Clamping
Voltage
8 x 20μs
Typical
Capacitance
RMS
Volts
DC
Volts
Energy
2ms
Peak Current
8 x 20μs
V
M(AC)
V
M(DC)
W
TM
I
TM
1 x Pulse
I
TM
2 x Pulse
V
NOM
Min
V
NOM
Max
V
C
I
PK
f = 1MHz
(V)
(V)
(J)
(A)
(A)
(V)
(V)
(V)
(A)
(pF)
V07E460P
P7V460
460
615
48
1750
1200
675
825
1240
10
45
V10E460P
P10V460
460
615
90
3500
2500
675
825
1240
25
120
V14E460P
P14V460
460
615
180
6000
4500
675
825
1240
50
220
V20E460P
P20V460
460
615
360
10000
6500
675
825
1240
100
400
V10E510P
P10V510
510
670
80
3500
2500
738
902
1355
25
110
V14E510P
P14V510
510
670
165
6000
4500
738
902
1355
50
200
V20E510P
P20V510
510
670
325
10000
6500
738
902
1355
100
350
V10E550P
P10V550
550
745
90
3500
2500
819
1001
1500
25
100
V14E550P
P14V550
550
745
180
6000
4500
819
1001
1500
50
180
V20E550P
P20V550
550
745
360
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
UltraMOV™ Series Ratings & Specifications (Continued...)
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.
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 device. Furthermore, the operating values
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.
Power Dissipation Ratings
100
90
80
70
60
50
40
30
20
10
0
-55
50
60
70
80
90 100 110 120 130 140 150
AMBIENT TEMPERATURE ( oC)
100
90
50
10
O1
T
T1
T2
TIME
Peak Pulse Current Test Waveform
Current Energy and Power Derating Curve
0
1 = Virtual Origin of Wave
T = Time from 10% to 90% of Peak
T
1 = Rise Time = 1.25 x T
T
2 = Decay Time
Example - For an 8/20 μs Current Waveform:
8μs = T
1 = Rise Time
20μs = T
2 = Decay Time
Figure 1
Figure 2


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