V250LA20C Littelfuse Inc, V250LA20C Datasheet - Page 4

• Manufacturer Part Number: V250LA20C
• Description: VARISTOR 250V C-III 14MM RADIAL
• Manufacturer: Littelfuse Inc
• Series: C-IIIr

Specifications of V250LA20C

• Energy: 135J
• Varistor Voltage: 429V
• Current-surge: 5kA
• Number Of Circuits: 1
• Maximum Ac Volts: 250VAC
• Package / Case: Disc 14mm
• Technology: Metal Oxide
• Clamping Current: 50A
• Clamping Voltage: 650V
• Lead Style: Radial
• Ac Voltage Rating (max): 250VAC
• Operating Temp Range: -55C to 85C
• Mounting: Through Hole
• Surge Current (max): 6000A
• Lead Spacing: 8.5mm
• Product Depth (mm): 7.3mm
• Product Height (mm): 20mm
• Product Diameter (mm): 17mm
• Product: MOV
• Voltage Rating Dc: 429 V
• Voltage Rating Ac: 250 V
• Peak Surge Current: 6 KA
• Operating Temperature Range: - 55 C to + 85 C
• Dimensions: 14 mm Dia.
• Termination Style: Radial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Maximum Dc Volts: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

V130LA C(P) – V62 LA10C(P)
C-III Varistor Series
Power Dissipation Ratings
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. 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.
Current Energy and Power Derating Curve
Transient V-I Characteristics Curves
Maximum Clamping Voltage for 10mm Parts
Figure 3
Figure 1
10000
10000
1000
1000
100
100
0.001
0.001
100
90
80
70
60
50
40
30
20
10
MODEL SIZE = 10MM
T
130 to 625V
A
0
-55
625
= -55
550
o
C TO 85
0.01
0.01
50
M(A C)
510
o
60
C
RATING
460 440
0.1
0.1
130
70
AMBIENT TEMPERATURE (
MAXIMUM CLAMP
140
420
80
VOLTAGE
150
1
1
385
PEAK CURRENT (A)
PEAK CURRENT (A)
90
175
320
100
10
10
300
110
275
o
120
C)
100
100
Radial Lead Varistors > C-III series
250
130
230
1000
1000
140 150
10000
10000
Varistor Products
Revision: March 30, 2011
V130LA C(P)-V320LA10C(P)
Peak Pulse Current Test Waveform
Pulse Rating Curves
Repetitive Surge Capability for 10mm Parts
Figure 2
Figure
10,000
1,000
100
10
1
0
T
T
Example
1
1
2
10
O
= Virtual Origin of Wave
= Rise Time = 1.25 x T
∞
100
10
10
10
1
2
1
90
50
10
20μs = T
2
3
μs = T
Please refer to www.littelfuse.com/series/c-iii.html for current information.
1
SURGE IMPULSE DURATION (μs)
= Rise Time
2
T
T
1
100
T
2
μ
Specifications are subject to change without notice.
10
MODEL SIZE = 10mm
T
130 TO 625V
A
10
4
10
= -55
5
6
1,000
o
C TO 85
TIME
M(AC)
o
C
RATING
©2011 Littelfuse, Inc.
10,000