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Varistors
NEW
WESURGE
Disk Varistors WE-VD
Type
Order Code
A
max.
(mm)
7.5
9.0
12.5
16.5
23.0
B
(mm)
± 0.05 mm
0.6
0.6
0.8
0.8
1.0
C
(mm)
± 1.0 mm
5.0
5.0
7.5
7.5
10.0
D
min
(mm)
25
25
25
25
25
Ø 5 mm
Ø 7 mm
Ø 10 mm
Ø 14 mm
Ø 20 mm
820 x5…
820 x7…
820 x1…
820 x4…
820 x2…
●
●
●
●
●
●
Fast response time
Low leakage current
Low clamping voltage
Wide range of voltages available
Almost no energy consumption in stand-by mode
After a surge impulse the varistor works immediately in
normal mode so there is no slip current
●
Excellent absorption at surge impulses
●
12–48 V
DC
distribution
●
110–400 V power supply
291
Varistors
www.we-online.com
NEW
WESURGE
SMD Power Varistors WE-VS
Type
0402
A
(mm)
1.0 ± 0.15
1.6 ± 0.2
2.0 ± 0.2
3.2 ± 0.2
3.2 ± 0.2
4.5 ± 0.2
5.7 ± 0.2
B
(mm)
0.5 ± 0.1
0.8 ± 0.2
1.25 ± 0.2
1.6 ± 0.2
2.5 ± 0.2
3.2 ± 0.2
5.0 ± 0.2
C
(mm)
0.6 max
0.9 max
1.2 max
1.5 max
1.5 max
2.0 max
2.5 max
D
(mm)
0.25 ± 0.15
0.3 ± 0.2
0.3 ± 0.2
0.5 ± 0.2
0.5 ± 0.2
0.5 +0.3/–0.1
0.5 +0.3/–0.1
Varistors
0603
0805
1206
1210
1812
2220
●
●
●
●
●
●
Fast response time
Low leakage current
Low clamping voltage
Wide range of voltages available
Almost no energy consumption in stand-by mode
After a surge impulse the varistor works immediately in
normal mode so there is no slip current
●
Excellent absorption at surge impulses
●
●
●
●
●
Protection of DC distribution
Protection of power supply
Protection of bus systems and communication lines
Limiting of over-voltages
Protection of semiconductors
294
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