Littelfuse ZA Varistor Series - Manual (Page 9)

© 2014 Littelfuse, Inc. 145
Revised: February 13, 2014
Varistor Products
ZA Varistor Series
Radial Lead Varistors > ZA Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/za.html for current information.
ZA S
eries
Repetitive Surge Capability for 14mm Parts
V18ZA3(P) - V68ZA10(P) V82ZA12(P) - V180ZA10(P)
FIGURE 22. SURGE CURRENT RATING CURVES FOR
V82ZA4(P) - V180ZA5(P)
FIGURE 23. SURGE CURRENT RATING CURVES FOR
V18ZA3(P) - V68ZA10(P)
FIGURE 24. SURGE CURRENT RATING CURVES FOR
V82ZA12(P) - V180ZA10(P)
FIGURE 25. SURGE CURRENT RATING CURRENT FOR
V18ZA40(P) - V68ZA20(P)
FIGURE 26. SURGE CURRENT RATING CURVES FOR V120ZA20(P) - V180ZA20(P)
5,000
2,000
1,000
500
200
100
50
20
10
5
2
20 100 1,000 10,000
IMPULSE DURATION ( µs)
SURGE CURRENT (A)
1
10
102
2
103
INDEFINITE
104
105
106
MODEL SIZE 10mm
V82ZA4(P) - V180ZA5(P)
200
100
50
20
10
5
1
2
20 100 1,000 10,000
IMPULSE DURATION ( µs)
SURGE CURRENT (A
)
1
2
10
102
104
105
106
103
INDEFINITE
1,000
500
MODEL SIZE 14mm
V18ZA3(P) - V68ZA10(P)
5,000
2,000
200
100
50
20
10
5
2
500
20 100 1,000 10,000
IMPULSE DURATION ( µs)
SURGE CURRENT (A)
1
2
10
104
105
106
103
INDEFINITE
1,000 102
MODEL SIZE 14mm
V82ZA12(P) - V180ZA10(P)
2,000
200
100
50
20
10
5
2
500
20 100 1,000 10,000
IMPULSE DURATION ( µs)
SURGE CURRENT (A)
1 2
10
1,000
102
103
104
105
106
INDEFINITE
MODEL SIZE 20mm
V18ZA40(P) - V68ZA20(P)
10,000 1,000 100 20
IMPULSE DURATION ( µs)
SURGE CURRENT (A)
5,000
10,000
2,000
500
100
20
10
2
1,000
200
50
1
5
1
2
10
102
103
104
105
106
INDEFINITE
MODEL SIZE 20mm
V120ZA20(P) - V180ZA20(P)
FIGURE 24. SURGE CURRENT RATING CURVES FOR
V82ZA12(P) - V180ZA10(P)
FIGURE 25. SURGE CURRENT RATING CURRENT FOR
V18ZA40(P) - V68ZA20(P)
FIGURE 26. SURGE CURRENT RATING CURVES FOR V120ZA20(P) - V180ZA20(P)
5,000
2,000
200
100
50
20
10
5
2
500
20 100 1,000 10,000
IMPULSE DURATION ( µs)
SURGE CURRENT (A)
1
2
10
104
105
106
103
INDEFINITE
1,000 102
MODEL SIZE 14mm
V82ZA12(P) - V180ZA10(P)
2,000
200
100
50
20
10
5
2
500
20 100 1,000 10,000
IMPULSE DURATION ( µs)
SURGE CURRENT (A)
1 2
10
1,000
102
103
104
105
106
INDEFINITE
MODEL SIZE 20mm
V18ZA40(P) - V68ZA20(P)
10,000 1,000 100 20
IMPULSE DURATION ( µs)
SURGE CURRENT (A)
5,000
10,000
2,000
500
100
20
10
2
1,000
200
50
1
5
1
2
10
102
103
104
105
106
INDEFINITE
MODEL SIZE 20mm
V120ZA20(P) - V180ZA20(P)
V120ZA20(P) - V180ZA20(P) FIGURE 24. SURGE CURRENT RATING CURVES FOR
V82ZA12(P) - V180ZA10(P)
FIGURE 25. SURGE CURRENT RATING CURRENT FOR
V18ZA40(P) - V68ZA20(P)
FIGURE 26. SURGE CURRENT RATING CURVES FOR V120ZA20(P) - V180ZA20(P)
5,000
2,000
200
100
50
20
10
5
2
500
20 100 1,000 10,000
IMPULSE DURATION ( µs)
SURGE CURRENT (A)
1
2
10
104
105
106
103
INDEFINITE
1,000 102
MODEL SIZE 14mm
V82ZA12(P) - V180ZA10(P)
2,000
200
100
50
20
10
5
2
500
20 100 1,000 10,000
IMPULSE DURATION ( µs)
SURGE CURRENT (A)
1 2
10
1,000
102
103
104
105
106
INDEFINITE
MODEL SIZE 20mm
V18ZA40(P) - V68ZA20(P)
10,000 1,000 100 20
IMPULSE DURATION ( µs)
SURGE CURRENT (A)
5,000
10,000
2,000
500
100
20
10
2
1,000
200
50
1
5
1
2
10
102
103
104
105
106
INDEFINITE
MODEL SIZE 20mm
V120ZA20(P) - V180ZA20(P)
V18ZA40(P) - V68ZA20(P)
FIGURE 24. SURGE CURRENT RATING CURVES FOR
V82ZA12(P) - V180ZA10(P)
FIGURE 25. SURGE CURRENT RATING CURRENT FOR
V18ZA40(P) - V68ZA20(P)
FIGURE 26. SURGE CURRENT RATING CURVES FOR V120ZA20(P) - V180ZA20(P)
5,000
2,000
200
100
50
20
10
5
2
500
20 100 1,000 10,000
IMPULSE DURATION ( µs)
SURGE CURRENT (A)
1
2
10
104
105
106
103
INDEFINITE
1,000 102
MODEL SIZE 14mm
V82ZA12(P) - V180ZA10(P)
2,000
200
100
50
20
10
5
2
500
20 100 1,000 10,000
IMPULSE DURATION ( µs)
SURGE CURRENT (A)
1 2
10
1,000
102
103
104
105
106
INDEFINITE
MODEL SIZE 20mm
V18ZA40(P) - V68ZA20(P)
10,000 1,000 100 20
IMPULSE DURATION ( µs)
SURGE CURRENT (A)
5,000
10,000
2,000
500
100
20
10
2
1,000
200
50
1
5
1
2
10
102
103
104
105
106
INDEFINITE
MODEL SIZE 20mm
V120ZA20(P) - V180ZA20(P)
NOTE: If pulse ratings are exceeded, a shift of V
N(DC)
(at specified current) of more then +/-10% could result. This type of shift, which normally results
in a decrease of V
N(DC)
, may result in the device not meeting the original published specifications, but does not prevent the device from continuing to
function, and to provide ample protection.
Repetitive Surge Capability for 20mm Parts
Figure 21 Figure 22
Figure 23 Figure 24