Varistor Products
Surface Mount Multilayer Varistors (MLVs) > AUML Series
RoHS
AUML Varistor Series
The AUML Series of Multilayer Transient Surge Suppressors
was specifically designed to suppress the destructive
transient voltages found in an automobile. The most common
transient condition results from large inductive energy
discharges. The electronic systems in the automobile, e.g.
antilock brake systems, direct ignition systems, engine
control, airbag control systems, wiper motor controls, etc.,
are susceptible to damage from these voltage transients and
thus require protection. The AUML transient suppressors
have temperature independent suppression characteristics
affording protection from -55ºC to 125ºC.
The AUML suppressor is manufactured from semiconducting
ceramics which offer rugged protection and excellent
transient energy absorption in a small package. The devices
are available in ceramic leadless chip form, eliminating lead
inductance and assuring fast speed of response to transient
surges. These Suppressors require significantly smaller
space and land pads than Silicon TVS diodes, offering greater
circuit board layout flexibility for the designer.
Size Table
Metric
EIA
3225
4532
1812
Also see the Littelfuse ML, MLN and MLE Series of
Multilayer Suppressors.
Applications
Features
t 4VQQSFTTJPOPG
inductive switching
or other transient
events such as &'5
and surge voltage at
the circuit board level
t &4%QSPUFDUJPOGPS
components sensitive
UP*&$.*-
45%$.FUIPE
BOEPUIFS
industry specifications
(See Also the MLE
PS.-/4FSJFT
t "&$2DPNQMJBOU
t 1SPWJEFTPOCPBSE
transient voltage
protection for ICs
and transistors
t 3P)4$PNQMJBOU
t -PBE%VNQFOFSHZ
rated per SAE
Specification J1113
t 6TFEUPIFMQBDIJFWF
electromagnetic
compliance of
end products
t -FBEMFTTTVSGBDF
mount chip form
t i;FSPw-FBE
Inductance
t 3FQMBDFMBSHFSTVSGBDF
NPVOU574;FOFSTJO
many applications
t 7BSJFUZPGFOFSHZ
ratings available
t )JHIQFBLTVSHF
current capability
t -PX1SPmMFDPNQBDU
industry standard
DIJQTJ[F
BOE4J[FT
t *OIFSFOUCJEJSFDUJPOBM
clamping
t /P1MBTUJDPSFQPYZ
packaging assures
CFUUFSUIBO7
flammability rating
t /PUFNQFSBUVSF
derating up to
125ºC ambient
Absolute Maximum Ratings
t'PSSBUJOHTPGJOEJWJEVBMNFNCFSTPGBTFSJFTTFF%FWJDF3BUJOHTBOE4QFDJmDBUJPOTDIBSU
Continuous
AUML Series
Units
18
V
1.5 to 25
24.5
-55 to +125
UP
J
V
O
C
O
C
%/OC
Steady State Applied Voltage:
%$7PMUBHF3BOHF7.%$
Transient:
-PBE%VNQ&OFSHZ8-%
+VNQ4UBSU$BQBCJMJUZNJOVUFT
7+6.1
0QFSBUJOH"NCJFOU5FNQFSBUVSF3BOHF5A
4UPSBHF5FNQFSBUVSF3BOHF5STG
Temperature Coefficient (α7
PG$MBNQJOH7PMUBHF7C
BU4QFDJGJFE5FTU$VSSFOU
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any
other conditions above those indicated in the operational sections of this specification is not implied.
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/AUML.html for current information.
51
Revision: July 16, 2009
AUML Varistor Series
AUML Series
Description
Varistor Products
Surface Mount Multilayer Varistors (MLVs) > AUML Series
Device Ratings and Specifications
Maximum Ratings (125ºC)
Maximum
Jump Start Load Dump
Continuous
Voltage
Energy
DC Voltage
(5 Min)
(10 Pulses)
V.%$
V+6.1
W-%
Part Number
(V)
(V)
Specifications (25ºC)
Nominal Varistor Voltage
Maximum
at 10mA
Standby Leakage
DC Test Current
(at 13V DC)
V/%$
Min
V/%$
Max
IL
(J)
(V)
Maximum Clamping
Voltage (VC) at
Test Current (8/20μs)
VC
I1
(V)
(μA)
(V)
(A)
1.5
7"6.-"
18
24.5
1.5
23
32
7"6.-"
18
24.5
23
32
1.5
V18AUMLA1812
18
24.5
23
32
7"6.-"
18
24.5
25
23
32
'PSBVUPNPUJWF7BOE7BQQMJDBUJPOTQMFBTFDPOUBDUZPVS-JUUFMGVTFSFQSFTFOUBUJWFPSWJTJUXXXMJUUFMGVTFDPNGPSUIFMBUFTUQSPEVDU
update.
NOTES:
"WFSBHFQPXFSEJTTJQBUJPOPGUSBOTJFOUTOPUUPFYDFFE888BOE8GPSNPEFMTJ[FTBOESFTQFDUJWFMZ
-PBE%VNQFOFSHZSBUJOHJOUPUIFTVQQSFTTPS
PGBWPMUBHFUSBOTJFOUXJUIBSFTVMUBOUUJNFDPOTUBOUPGNTUPNT
5IFSNBMTIPDLDBQBCJMJUZQFS.JM4UE.FUIPE$UP$NJOVUFTBU$$ZDMFTNJOVUFTBUFBDIFYUSFNF
'PSBQQMJDBUJPOTQFDJmDSFRVJSFNFOUTQMFBTFDPOUBDU-JUUFMGVTF
Current, Energy and Power Derating Curve
Peak Pulse Current Test Waveform for Clamping Voltage
100
50
0
T
O1
90
PERCENT OF RATED VALUE
100
PERCENT OF PEAK VALUE
8IFOUSBOTJFOUTPDDVSJOSBQJETVDDFTTJPOUIFBWFSBHF
QPXFSEJTTJQBUJPOJTUIFFOFSHZXBUUTFDPOET
QFSQVMTF
times the number of pulses per second. The power so
developed must be within the specifications shown on the
%FWJDF3BUJOHTBOE$IBSBDUFSJTUJDT5BCMFGPSUIFTQFDJmD
device. Certain parameter ratings must be derated at high
temperatures as shown below.
TIME
T1
80
T2
Figure 2
70
60
17JSUVBM0SJHJOPG8BWF
55JNFGSPNUPPG1FBL
T13JTF5JNFY5
T2%FDBZ5JNF
Example 'PSBOμT$VSSFOU8BWFGPSN
8μs = T13JTF5JNF
μs = T2%FDBZ5JNF
50
40
30
20
10
0
-55
50
60
70
80
90
100 110
120
130
140 150
AMBIENT TEMPERATURE (oC)
Figure 1
Maximum Leakage Current/Clamping Voltage Curve for
AUML Series at 25ºC
MAXIMUM LEAKAGE
Typical V-I Characteristics of the V18AUMLA2220 at -40ºC,
25ºC, 85ºC and 125ºC
100
MAXIMUM CLAMPING VOLTAGE
100
1210/1206
1812
2220
VOLTAGE
VOLTAGE
1210/1206
10
1812
2220
-40oC
10
25oC
85oC
125 oC
1
1
10μA
Figure 3
AUML Varistor Series
100μA
1mA
100mA
10mA
CURRENT
1A
10A
100A
1μA
Figure 4
52
Revision: July 16, 2009
10μA
100μA
1mA
10mA
100mA
1A
10A
100A
1000A
CURRENT
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/AUML.html for current information.
Varistor Products
Surface Mount Multilayer Varistors (MLVs) > AUML Series
Temperature Effects
In the leakage region of the AUML suppressor, the device
DIBSBDUFSJTUJDTBQQSPBDIFTBMJOFBSPINJD
SFMBUJPOTIJQ
and shows a temperature dependent affect. In this region
the suppressor is in a high resistance mode (approaching
æ
BOEBQQFBSTBTBOFBSPQFODJSDVJU-FBLBHFDVSSFOUT
at maximum rated voltage are in the microamp range.
8IFODMBNQJOHUSBOTJFOUTBUIJHIFSDVSSFOUTBUBOEBCPWF
UIFN"SBOHF
UIF"6.-TVQQSFTTPSBQQSPBDIFT
BDIBSBDUFSJTUJD*OUIJTSFHJPOUIFDIBSBDUFSJTUJDT
of the AUML are virtually temperature independent.
'JHVSFTIPXTUIFUZQJDBMFGGFDUPGUFNQFSBUVSFPO
the V-I characteristics of the AUML suppressor.
"-PBE%VNQUSBOTJFOUPDDVSTXIFOUIFBMUFSOBUPSMPBEJO
the automobile is abruptly reduced. The worst case scenario
of this transient occurs when the battery is disconnected
while operating at full rated load. There are a number of
EJGGFSFOU-PBE%VNQTQFDJmDBUJPOTJOFYJTUFODFJOUIF
automotive industry, with the most common one being that
recommended by the Society of Automotive Engineers,
specification #SAE J1113. Because of the diversity of these
-PBE%VNQTQFDJmDBUJPOT-JUUFMGVTFEFmOFTUIF-PBE
%VNQFOFSHZDBQBCJMJUZPGUIF"6.-TVQQSFTTPSSBOHFBT
that energy dissipated by the device itself, independent
PGUIFUFTUDJSDVJUTFUVQ5IFSFTVMUBOU-PBE%VNQFOFSHZ
handling capability serves as an excellent figure of merit for
UIF"6.-TVQQSFTTPS4UBOEBSE-PBE%VNQTQFDJmDBUJPOT
SFRVJSFBEFWJDFDBQBCJMJUZPGQVMTFTBUSBUFEFOFSHZ
BDSPTTBUFNQFSBUVSFSBOHFPG$UP$5IJT
capability requirement is well within the ratings of all of the
"6.-4FSJFT'JHVSFPOOFYUQBHF
The very high energy absorption capability of the AUML
suppressor is achieved by means of a highly controlled
manufacturing process. This technology ensures that a
large volume of suppressor material, with an interdigitated
layer construction, is available for energy absorption in an
extremely small package. Unlike equivalent rated Silicon
TVS diodes, the entire AUML device volume is available to
EJTTJQBUFUIF-PBE%VNQFOFSHZ
'VSUIFSUFTUJOHPOUIF"6.-4FSJFTIBTDPODFOUSBUFE
POFYUFOEJOHUIFOVNCFSPG-PBE%VNQQVMTFTBUSBUFE
energy, which are applied to the devices. The reliability
information thus generated gives an indication of the
inherent capability of these devices. As an example of
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QVMTFTBUJUTSBUFEFOFSHZPGKPVMFT+
UIFTJ[F
IBTCFFOQVMTFEPWFSUJNFTBU+BOETJ[FIBT
CFFOQVMTFEBUJUTSBUFEFOFSHZPG+PWFSUJNFT*O
all cases there has been little or no change in the device
DIBSBDUFSJTUJDT'JHVSFPOOFYUQBHF
Experience has shown that while the effects of a load dump
tranient is of real concern, its frequency of occurrence is
much less than thoe of low energy inductive spikes. Such
low energy inductive spikes may be generated as a result
PGNPUPSTTXJUDIJOHPOBOEPGGGSPN&4%PDDVSSBODFTGVTF
blowing, etc. It is essential that the suppression technology
selected also has the capability to suppress such transients.
5FTUJOHPOUIF7"6.-"IBTTIPXOUIBUBGUFSCFJOH
TVCKFDUFEUPBSFQFUJUJWFFOFSHZQVMTFPG+PWFS
UJNFTOPDIBSBDUFSJTUJDDIBOHFTIBWFPDDVSSFE'JHVSFPO
OFYUQBHF
)FODFUIFQFBLUFNQFSBUVSFTHFOFSBUFECZUIF-PBE
%VNQUSBOTJFOUBSFTJHOJmDBOUMZMPXFSBOEFWFOMZEJTTJQBUFE
UISPVHIPVUUIFDPNQMFUFEFWJDF'JHVSFCFMPX
5IJT
even energy dissipation ensures that there are lower peak
UFNQFSBUVSFTHFOFSBUFEBUUIF1/HSBJOCPVOEBSJFTPGUIF
AUML suppressor.
There are a number of different size devices available in the
AUML Series, each one with a load dump energy rating,
which is size dependent.
Speed of Response
The clamping action of the AUML suppressor depends
on a conduction mechanism similar to that of other
TFNJDPOEVDUPSEFWJDFTJF1/+VODUJPOT
5IFBQQBSFOU
slow response time often associated with transient
WPMUBHFTVQQSFTTPST;FOFST.07T
JTPGUFOEVFUP
parasitic inductance in the package and leads of the
device and less dependent of the basic material (Silicon,
;N0
5IVTUIFTJOHMFNPTUDSJUJDBMFMFNFOUBGGFDUJOHUIF
response time of any suppressor is its lead induc-tance.
The AUML suppressor is a surface mount device, with no
leads or external packaging, and thus, it has virtually zero
inductance. The actual response time of a AUML surge
suppressor is in the 1 to 5 ns range, more than sufficient
for the transients which are likely to be encountered in an
automotive environment.
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/AUML.html for current information.
Multilayer Internal Construction
Figure 5
53
Revision: July 16, 2009
AUML Varistor Series
AUML Series
Load Dump Energy Capability
Varistor Products
Surface Mount Multilayer Varistors (MLVs) > AUML Series
AUML Load Dump Pulsing over a Temperature Range of
-55ºC to +125ºC
V(10mA)
35
2220 = 25J
1812 = 6J
1210 = 3J
30
VOLTAGE
25
20
15
10
5
0
0
1
2
3
4
5
6
7
8
9
10
11
12
# OF LOAD DUMPS
Figure 6
Repetitive Load Dump Pulsing at Rated Energy
V(10mA)
35
2220 = 25J
1812 = 6J
30
1210 = 3J
VOLTAGE
25
20
15
10
5
0
0
50
100
150
200
250
300
350
1,000
2,000
# OF LOAD DUMPS
Figure 7
Repetitive Energy Testing of V18AUMLA2220
at an Energy Level of 2 Joules
V AT 10mA
VOLTAGE
100
V18AUMLA2220
10
1000
Figure 8
AUML Varistor Series
2000
3000
4000
5000
6000
7000
NUMBER OF PULSES
54
Revision: July 16, 2009
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/AUML.html for current information.
Varistor Products
Surface Mount Multilayer Varistors (MLVs) > AUML Series
Lead (Pb) Soldering Recommendations
The principal techniques used for the soldering of
DPNQPOFOUTJOTVSGBDFNPVOUUFDIOPMPHZBSF*33FnPX
BOE8BWFTPMEFSJOH5ZQJDBMQSPmMFTBSFTIPXOPOUIFSJHIU
Reflow Solder Profile
The termination option available for each solder technique is:
230
3FnPX8BWF
/JDLFM#BSSJFSQSFGFSSFE
/JDLFM#BSSJFSQSFGFSSFE
4JMWFS1MBUJOVN
8BWFTPMEFSJOHJTUIFNPTUTUSFOVPVTPGUIFQSPDFTTFT
To avoid the possibility of generating stresses due to
thermal shock, a preheat stage in the soldering process
is recommended, and the peak temperature of the solder
process should be rigidly controlled.
AUML Series
The recommended solder for the AUML suppressor is
B4O1C"H
4O1C
PS4O1C
-JUUFMGVTFBMTPSFDPNNFOETBO3."TPMEFSnVY
Figure 9
Wave Solder Profile
8IFOVTJOHBSFnPXQSPDFTTDBSFTIPVMECFUBLFOUP
FOTVSFUIBUUIF"6.-DIJQJTOPUTVCKFDUFEUPBUIFSNBM
gradient steeper than 4 degrees per second; the ideal
HSBEJFOUCFJOHEFHSFFTQFSTFDPOE%VSJOHUIFTPMEFSJOH
QSPDFTTQSFIFBUJOHUPXJUIJOEFHSFFTPGUIFTPMEFShT
peak temperature is essential to minimize thermal shock.
300
MAXIMUM WAVE 260 oC
TEMPERATURE ( oC)
250
Once the soldering process has been completed, it
is still necessary to ensure that any further thermal
shocks are avoided. One possible cause of thermal
shock is hot printed circuit boards being removed from
UIFTPMEFSQSPDFTTBOETVCKFDUFEUPDMFBOJOHTPMWFOUT
at room temperature. The boards must be allowed to
DPPMHSBEVBMMZUPMFTTUIBO$CFGPSFDMFBOJOH
200
150
SECOND PREHEAT
100
FIRST PREHEAT
50
0
0.0
Figure 10
0.5
1.0
1.5
2.0
2.5
3.0
TIME (MINUTES)
3.5
4.0
4.5
Lead–free (Pb-free) Soldering Recommendations
Littelfuse offers the Nickel Barrier Termination finish for the
optimum Lead–free solder performance.
Lead–free Re-flow Solder Profile
5IFQSFGFSSFETPMEFSJT4O"H$V
XJUIBO3."
flux, but there is a wide selection of pastes and fluxes
available with which the Nickel Barrier parts should be
compatible.
MAXIMUM TEMPERATURE 260˚C
20 - 40 SECONDS WITHIN 5˚C
RAMP RATE
<3˚C/s
The reflow profile must be constrained by the maximums
JOUIF-FBEoGSFF3FnPX1SPmMF'PS-FBEoGSFF8BWF
TPMEFSJOHUIF8BWF4PMEFS1SPmMFTUJMMBQQMJFT
PREHEAT ZONE
Note: the Lead–free paste, flux and profile were used for
evaluation purposes by Littelfuse, based upon industry
standards and practices. There are multiple choices of all
three available, it is advised that the customer explores the
optimum combination for their process as processes vary
considerably from site to site.
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/AUML.html for current information.
60 - 150 SEC
> 217˚C
5.0
6.0
7.0
Figure 11
55
Revision: July 16, 2009
AUML Varistor Series
Varistor Products
Surface Mount Multilayer Varistors (MLVs) > AUML Series
Product Dimensions (mm)
1"%-":065%*.&/4*0/4
$)*1-":065%*.&/4*0/4
E
L
D
W
Note: Avoid metal runs in this area, parts are not recommended
GPSVTFJOBQQMJDBUJPOTVTJOH4JMWFS"H
FQPYZQBTUF
1206 Size
SYMBOL
A
1210 Size
1812 Size
2220 Size
IN
MM
IN
MM
IN
MM
IN
MM
B
C
DNBY
E
L
W
the AUML suppressor range as that energy dissipated by
the device itself, independent of the test circuit setup.
5IFSFTVMUBOU-PBE%VNQFOFSHZIBOEMJOHDBQBCJMJUZ
serves as an excellent figure of merit for the AUML
TVQQSFTTPS4UBOEBSE-PBE%VNQTQFDJmDBUJPOTSFRVJSF
BEFWJDFDBQBCJMJUZPGQVMTFTBUSBUFEFOFSHZBDSPTT
BUFNQFSBUVSFSBOHFPG$UP$5IJTDBQBCJMJUZ
requirement is well within the ratings of all of the AUML
4FSJFT'JHVSF
"-PBE%VNQUSBOTJFOUPDDVSTXIFOUIFBMUFSOBUPSMPBE
in the automobile is abruptly reduced. The worst case
scenario of this transient occurs when the battery is
disconnected while operating at full rated load. There
BSFBOVNCFSPGEJGGFSFOU-PBE%VNQTQFDJmDBUJPOTJO
existence in the automotive industry, with the most
common one being that recommended by the Society of
Automotive Engineers, specification #SAE J1113. Because
PGUIFEJWFSTJUZPGUIFTF-PBE%VNQTQFDJmDBUJPOT
-JUUFMGVTFEFmOFTUIF-PBE%VNQFOFSHZDBQBCJMJUZPG
Explanation of Terms
Maximum Continuous DC Working Voltage (*V.%$
+)
Leakage Current *IL+
5IJTJTUIFNBYJNVNDPOUJOVPVT%$WPMUBHFXIJDINBZ
be applied, up to the maximum operating temperature
$
UPUIF.-TVQQSFTTPS5IJTWPMUBHFJTVTFEBTUIF
reference test point for leakage current and is always less
than the breakdown voltage of the device.
In the nonconducting mode, the device is at a very
IJHIJNQFEBODFBQQSPBDIJOHΩ at its rated working
WPMUBHF
BOEBQQFBSTBTBOBMNPTUPQFODJSDVJUJOUIF
system. The leakage current drawn at this level is very
low (<25μ"BUBNCJFOUUFNQFSBUVSF
BOEVOMJLFUIF
;FOFSEJPEFUIFNVMUJMBZFS574IBTUIFBEEFEBEWBOUBHF
that, when operated up to its maximum temperature,
JUTMFBLBHFDVSSFOUXJMMOPUJODSFBTFBCPWFμA.
Load Dump Energy Rating *W-%+
This is the actual energy the part is rated to dissipate
VOEFS-PBE%VNQDPOEJUJPOTOPUUPCFDPOGVTFEXJUIUIF
TPVSDFFOFSHZPGB-PBE%VNQUFTUTQFDJmDBUJPO
Nominal Voltage *V/%$+
This is the voltage at which the AUML enters its
conduction state and begins to suppress transients.
In the automotive environment this voltage is
EFmOFEBUUIFN"QPJOUBOEIBTBNJOJNVN
(V/%$
.*/
BOENBYJNVN7/%$
."9
WPMUBHFTQFDJmFE
Maximum Clamping Voltage *VC+
This is the peak voltage appearing across the suppressor
when measured at conditions of specified pulse current
BOETQFDJmFEXBWFGPSNμT
*UJTJNQPSUBOUUPOPUF
that the peak current and peak voltage may not necessarily
be coincidental in time.
AUML Varistor Series
56
Revision: July 16, 2009
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/AUML.html for current information.
Varistor Products
Surface Mount Multilayer Varistors (MLVs) > AUML Series
Part Numbering System
V 18 AUML A 2220 X X
PACKING OPTIONS
A: Bulk Pack, 2500 pieces
H: 7in (178mm) Diameter Reel*
T: 13in (330mm) Diameter Reel*
* See quanttities in Packaging table below
DEVICE FAMILY
TVSS Device
MAXIMUM DC
WORKING VOLTAGE
END TERMINATION OPTION
No Letter: Ag/Pt 2220 size only
N: Nickel Barrier
AUTOMOTIVE
MULTILAYER DESIGNATOR
LOAD DUMP ENERGY RATING
INDICATOR
AUML Series
DEVICE SIZE
i.e., 220 mil x 200 mil
Packaging*
Quantity
Device Size
13” Inch Reel
('T' Option)
7” Inch Reel
('H' Option)
Bulk Pack
('A' Option)
1812
1BDLBHJOH
*UJTSFDPNNFOEFEUIBUQBSUTCFLFQUJOUIFTFBMFECBHQSPWJEFEBOEUIBUQBSUTCFVTFEBTTPPOBTQPTTJCMFXIFOSFNPWFEGSPNCBHT
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/AUML.html for current information.
57
Revision: July 16, 2009
AUML Varistor Series
Varistor Products
Surface Mount Multilayer Varistors (MLVs) > AUML Series
Tape and Reel Specifications
Symbol
Description
Dimensions in Millimeters
A0
8JEUIPG$BWJUZ
%FQFOEFOUPO$IJQ4J[FUP.JOJNJ[F3PUBUJPO
B0
Length of Cavity
%FQFOEFOUPO$IJQ4J[FUP.JOJNJ[F3PUBUJPO
K0
%FQUIPG$BWJUZ
%FQFOEFOUPO$IJQ4J[FUP.JOJNJ[F3PUBUJPO
W
8JEUIPG5BQF
F
%JTUBODF#FUXFFO%SJWF)PMF$FOUFSTBOE$BWJUZ$FOUFST
E
%JTUBODF#FUXFFO%SJWF)PMF$FOUFSTBOE5BQF&EHF
P1
%JTUBODF#FUXFFO$BWJUZ$FOUFS
P2
"YJBM%JTUBODF#FUXFFO%SJWF)PMF$FOUFSTBOE$BWJUZ$FOUFST
P0
"YJBM%JTUBODF#FUXFFO%SJWF)PMF$FOUFST
D0
%SJWF)PMF%JBNFUFS
D1
%JBNFUFSPG$BWJUZ1JFSDJOH
T1
Embossed Tape Thickness
.BY
.BY
T2
Top Tape Thickness
.BY
.BY
/05&%JNFOTJPOTJONJMMJNFUFST
t$POGPSNTUP&*"3FWJTJPO"
t$BOCFTVQQMJFEUP*&$QVCMJDBUJPO
Tape
Chip Size
8mm Wide Tape
12mm Wide Tape
1812
Standard Packaging
Special Packaging
Tape and reel is the standard packaging method of the
"6.-4FSJFT5IFTUBOEBSENJMMJNFUFSoJODI
SFFM
VUJMJ[FEDPOUBJOTQJFDFTGPSUIFBOEDIJQT
QJFDFTGPSUIFDIJQBOEQJFDFTGPSUIF
TJ[F
Option1:
Option 2 'PSTNBMMTBNQMFRVBOUJUJFTMFTTUIBO
QJFDFT
UIFVOJUTBSFTIJQQFECVMLQBDL5P
PSEFSBEEh"hUPUIFstandard part number,
e.g. V18AUMLA222"
To order: add hTh to the standard part number,
e.g.V18AUMLA222OT.
AUML Varistor Series
NJMMJNFUFSoJODI
SFFMTDPOUBJOJOH
QJFDFT
BSFBWBJMBCMF5PPSEFSBEEh)hUPUIFTUBOEBSE
QBSUOVNCFSFH7"6.-")
58
Revision: July 16, 2009
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/AUML.html for current information.