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) – V460LA10C(P)
C-III Varistor Series
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
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 1
Figure 3
10,000
1,000
100
100
90
80
70
60
50
40
30
20
10
0.001
0
-55
V230LA10C(P)
V250LA10C(P)
50
0.01
MODEL SIZE = 10mm
60
V275LA10C(P)
70
AMBIENT TEMPERATURE (
0.1
V130LA5C(P)
80
V300LA10C(P)
Peak Amperes (A)
90
1
V320LA10C(P)
100
V 60LA10C(P)
V1 0LA5C(P)
1.0
110
o
120
C)
100
Radial Lead Varistors > C-III series
V150LA5C(P)
V175LA5C(P)
130
1000
140 150
10000
Varistor Products
Revision: June 3, 2009
104
V130LA C(P)-V320LA10C(P)
Peak Pulse Current Test Waveform
Pulse Rating Curves
Repetitive Surge Capability for 10mm Parts
Figure 2
10,000
Figure 4
1,000
100
10
1
10
10
10
10
10
0
T = Time from 10% to 90% of Peak
T
T
Example
1
2
1
2
3
1
2
= Virtual Origin of Wave
O
100
1
90
50
10
8μs = T
20μs = T
Please refer to www.littelfuse.com/series/c-iii.html for current information.
1
2
T
100
T
1
Surge Impulse Duration (μs)
MODEL SIZE = 10mm
T
2
μs Current Waveform:
Specifications are subject to change without notice.
1,000
TIME
©2009 Littelfuse, Inc.
10,000