V18AUMLA1812H Datasheet, PDF (4/7 Pages) Littelfuse – Surface Mount Multilayer Varistors (MLVs) > AUML Series

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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
V(10mA)
35
30
V(10mA)
235
320
23155 ^V(10mA)
312000
2155
2220 = 25J
1812 = 6J
1210 = 3J
2220 = 25J
1812 = 6J
1210 = 3J
2220 = 25J
1812 = 6J
1210 = 3J
1200
0
1
2
3
4
5
6
78
9 10 11 12
Figu¹r⁵⁵e 6
# OF LOAD DUMPS
FIGURE 51.⁰⁰AUML LOAD DUMP PULSING OVER A TEMPERATURE RANGE OF -55˚C TO 125˚C
0
1
2
3
4
5
6
78
9 10 11 12
5
# OF LOAD DUMPS
FIGU_RR_eE_p5_e.0A_tU_itM_ivL _eLO_LA_oD _aD_dUM_DP _uPU_mLS_pIN_PG_uO_lV_sE_iR_nA_gT_aEM_tP_RE_aRA_tT_eU_dRE_ER_nA_eN_rG_gE_yOF -55˚C TO 125˚C
0 V(10m1A) 2
3
4
5
6
78
9 10 11 12
35
# OF LOAD DUM2P22S0 _{= 25J}
1812 = 6J
FIGURE 5³.⁰AUML LOAD DUMP PULSING OVER A TEMPERATURE RANGE OF -55˚C TO 125˚C
V(10mA)
2355
1210 = 3J
2220 = 25J
1812 = 6J
3200
V(10mA)
23155
31200
2220 = 25J
1210 = 3J
1812 = 6J
2155
1210 = 3J
1200
0
50 100 150 200 250 300 350
155
# OF LOAD DUMPS
1,000
2,000
10 ^{FIGURE 6. REPETITIVE LOAD DUMP PULSING AT RATED ENERGY}
0
50 100 150
200 250 300 350
1,000
2,000
Figur⁵e 7
# OF LOAD DUMPS
0 ^{FIGURE 6. REPETITIVE LOAD DUMP PULSING AT RATED ENERGY}
V0AT 10m5A0
100 150
200 250
300 350
1,000
2,000
100
# OF LOAD DUMPS
Repeti^Ft^IGiv^Ue^REE⁶n^. e^RErg^PEy^TT^ITe^IVs^Eti^Ln^Og^ADo^Df^UV^M1^P8^PA^ULU^SIM^NGL^AA^T2^R2^AT2^E0^{D ENERGY}
at a₁₀n₀ ^VE^An^T e¹⁰r^mg^Ay Level of 2 Joules
V AT 10mA
100
V18AUMLA2220
Maximum Continuous DC Working Voltage (*V_M*(DC)++)
This is the maximum continuous DC voltage which may
be applied, up to the maximum operating temperature
(125ºC), to the ML suppressor. This voltage is used as the
reference test point for leakage current and is always less
than the breakdown voltage of the device.
Load Dump Energy Rating *W_LD+
This is the actual energy the part is rated to dissipate
under Load Dump conditions (not to be confused with the
"source energy" of a Load Dump test specification).
Maximum Clamping Voltage *V_C+
This is the peak voltage appearing across the suppressor
when measured at conditions of specified pulse current
and specified waveform (8/20µs). It is important to note
that the peak current and peak voltage may not necessarily
be coincidental in time.
Leakage Current *I_L+
In the nonconducting mode, the device is at a very
high impedance (approaching 10⁶Ω at its rated working
voltage) and appears as an almost open circuit in the
system. The leakage current drawn at this level is very
low (<25µA at ambient temperature) and, unlike the
Zener diode, the multilayer TVS has the added advantage
that, when operated up to its maximum temperature,
its leakage current will not increase above 500µA.
Nominal Voltage *V_N*DC++
This is the voltage at which the AUML enters its
conduction state and begins to suppress transients.
In the automotive environment this voltage is
defined at the 10mA point and has a minimum
(V_{N(DC) MIN}) and maximum (V_{N(DC) MAX}) voltage specified.
V18AUMLA2220
10
1000
2000
3000
4000
5000
6000
7000
NUMBER OF PULSES
V18AUMLA2220
FIGURE 7. REP1E0TITIVE ENERGY TESTING OF THE V18AUMLA2220 AT AN ENERGY LEVEL OF 2 JOULES
1000
2000
3000
4000
5000
6000
7000
NUMBER OF PULSES
FIGURE 7. REP₁E₀ TITIVE ENERGY TESTING OF THE V18AUMLA2220 AT AN ENERGY LEVEL OF 2 JOULES
1000
2000
3000
4000
5000
6000
7000
Figure 8
NUMBER OF PULSES
FIGURE 7. REPETITIVE ENERGY TESTING OF THE V18AUMLA2220 AT AN ENERGY LEVEL OF 2 JOULES
AUML Varistor Series
58
Revised: February 21, 2014
© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/AUML.html for current information.