
Surface Mount Varistors
198
www.littelfuse.com
Transient Voltage Surge Suppressor
CH Varistor Series
Recommended Pad Outline
FIGURE 5. SURGE CURRENT RATING CURVES FOR
V22CH8 - V56CH8
500
200
50
20
10
5
2
1
0.2
0.5
100
20
100
1,000
10,000
IMPULSE DURATION (
μ
s)
S
1
2
10
10
2
10
3
10
4
10
5
10
6
INDEFINITE
MODEL SIZE 5 x 8mm
V22CH8 - V56CH8
Pulse Rating Curves
FIGURE 6. SURGE CURRENT RATING CURVES FOR
V120CH8 - V430CH8
20
100
1,000
10,000
IMPULSE DURATION (
μ
s)
2,000
1,000
500
200
100
50
20
10
5
2
1
1
2
10
10
2
10
3
10
4
10
5
INDEFINITE
MODEL SIZE 5 x 8mm
V120CH8 - V430CH8
10
6
S
NOTE: If pulse ratings are exceeded, a shift of VN(DC) (at specified current) of more than ±10% could result.This type of shift, which normally results in a decrease of VN(DC),
may result in the device not meeting the original published specifications, but it does not prevent the device from continuing to function, and to provide ample protection.
Mechanical Dimensions
E
PASSIVATION
CONTACT AREA
W
L
D
NOTE 1
C
A
B
SYMBOL
INCHES
MILLIMETERS
MIN
MAX
MIN
MAX
D
-
0.080
-
2.03
E
0.016
0.050
0.41
1.27
L
0.311
0.335
7.90
8.51
W
0.185
0.207
4.70
5.26
SYMBOL
INCHES
MILLIMETERS
A
0.402
10.21
B
0.216
5.50
C
0.087
2.21
NOTE: Avoid metal runs in this area. Soldering recommendations:
Material - 62/36/2 Sn/Pb/Ag or equivalent. Temperature - 230
o
C
Max., 5s. Max. Flux - R.M.A.
Pb
RoHS