
© 2013 Littelfuse, Inc.
117
Revised: June 5, 2013
Varistor Products
C-III Varistor Series
Radial Lead Varistors > C-III series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/c-iii.html for current information.
C–III Series
10,000
1,000
100
10
1
10 100 1,000 10,000
SURGE IMPULSE DURATION (μs)
RATED PEAK SURGE CURRENT (A)
1
2
10
3
10
4
MODEL SIZE = 20mm
T
A
= -55
o
C TO 85
o
C
15
10
2
∞
Maximum Clamping Voltage for 14mm Parts
V130LA10C(P) – V420LA20C(P)
10,000
1,000
100
0.001 0.01 0.1 1
10
100
1000
10000
V420LA20C(P)
V385LA20C(P)
V250LA20C(P)
MODEL SIZE = 14mm
Maximum Voltage (V)
Peak Amperes (A)
V320LA20C(P)
V300LA20C(P)
V230LA20C(P)
V175LA10C(P)
V150LA10C(P)
V140LA10C(P)
V130LA10C(P)
V275LA20C(P)
V460LA20C(P)
Transient V-I Characteristics Curves (continued)
MODEL SIZE = 20mm
10,000
1,000
100
0.001 0.01 0.1 1
10
100
1000
10000
V575LA80C(P)
V660LA100C(P)
V625LA80C(P)
V510LA80C(P)
V460LA40C(P)
V480LA80C(P)
V420LA40C(P)
V385LA40C(P)
V175LA20C(P)
V150LA20C(P)
V140LA20C(P)
V130LA20C(P)
V230LA40C(P)
V250LA40C(P)
V275LA40C(P)
V300LA40C
(P)
V320LA40C(P)
V680LA100C(P)
Maximum Voltage (V)
Peak Amperes (A)
Maximum Clamping Voltage for 20mm Parts
Maximum Clamping Voltage for Low Clamping Voltage Parts
V130LA5C(P) - V680LA10C (P)
V130LA20CX325(P) - V300LA40CX245 (P)
10,000
1,000
100
0.001
0.01 0.1
1
10
100
1000 10000
V300LA40CX745(P)
V275LA40CX680(P)
V250LA40CX620(P)
V230LA40CX570(P)
V175LA20CX425(P)
V150LA20CX360(P)
V140LA20CX340(P)
V130LA20CX325(P)
V300LA40CX810(P)
Maximum Voltage (V)
Peak Am
eres
A
Repetitive Surge Capability for 20mm Parts
V130LA20C(P)-V680LA100C(P)
Repetitive Surge Capability for 14mm Parts
V130LA10C(P)-V420LA20C(P)
Pulse Rating Curves (continued)
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
10,000
1,000
100
10
1
10 100 1,000 10,000
SURGE IMPULSE DURATION (μs)
RATED PEAK SURGE CURRENT (A)
15
1
2
10
2
10
3
10
4
MODEL SIZE = 14mm
T
A
= -55
o
C TO 85
o
C
∞
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