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Surface Mount Multilayer Varistors (MLVs) > AUML Series
AUML Load Dump Pulsing over a Temperature Range of
-55oC to +125oC
Explanation of Terms
35
V(10mA)
Maximum Continuous DC Working Voltage (*V
+
)
30
25
20
15
2220 = 25J
1812 = 6J
1210 = 3J
be applied, up to the maximum operating temperature
reference test point for leakage current and is always less
than the breakdown voltage of the device.
10
Load Dump Energy Rating *W
+
5
This is the actual energy the part is rated to dissipate
0
0
1
2
3
4
5
6
7
8
9
10
11
12
Figure 6
# OF LOAD DUMPS
Maximum Clamping Voltage *V C+
Repetitive Load Dump Pulsing at Rated Energy
This is the peak voltage appearing across the suppressor
when measured at conditions of speci?ed pulse current
μ
35
30
25
V(10mA)
2220 = 25J
1812 = 6J
1210 = 3J
that the peak current and peak voltage may not necessarily
be coincidental in time.
Leakage Current *I L+
20
15
10
5
In the nonconducting mode, the device is at a very
Ω at its rated working
system. The leakage current drawn at this level is very
low (<25 μ
0
0
Figure 7
50
100
150
200 250 300
# OF LOAD DUMPS
350
1,000
2,000
that, when operated up to its maximum temperature,
μ A.
Nominal Voltage *V
+
Repetitive Energy Testing of V18AUMLA2220
at an Energy Level of 2 Joules
This is the voltage at which the AUML enters its
conduction state and begins to suppress transients.
In the automotive environment this voltage is
100
V AT 10mA
V18AUMLA2220
(V
10
1000
2000
3000
4000
5000
6000
7000
Figure 8
NUMBER OF PULSES
AUML Varistor Series
Revision: September 14, 2010
?2010 Littelfuse, Inc.
Speci?cations are subject to change without notice.
Please refer to www.littelfuse.com/series/AUML.html for current information.
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