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V18AUMLA1210A Datasheet, PDF (1/7 Pages) Littelfuse – Surface Mount Multilayer Varistors (MLVs) AUML Series
Varistor Products
Surface Mount Multilayer Varistors (MLVs) > AUML Series
RoHS AUML Varistor Series
Size Table
Metric

3225
4532

EIA


1812

Description
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.
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
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components sensitive
UP*&$ .*-
45%$ .FUIPE
 BOEPUIFS
industry specifications
(See Also the MLE
PS.-/4FSJFT
t 1SPWJEFTPOCPBSE
transient voltage
protection for ICs
and transistors
t 6TFEUPIFMQBDIJFWF
electromagnetic
compliance of
end products
t 3FQMBDFMBSHFSTVSGBDF
NPVOU574;FOFSTJO
many applications
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t 3P)4$PNQMJBOU
t -PBE%VNQFOFSHZ
rated per SAE
Specification J1113
t -FBEMFTT TVSGBDF
mount chip form
t i;FSPw-FBE
Inductance
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ratings available
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derating up to
125ºC ambient
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current capability
t -PX1SPmMF DPNQBDU
industry standard
DIJQTJ[F   
BOE4J[FT 
t *OIFSFOUCJEJSFDUJPOBM
clamping
t /P1MBTUJDPSFQPYZ
packaging assures
CFUUFSUIBO7
flammability rating
Absolute Maximum Ratings
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Continuous
AUML Series
Units
Steady State Applied Voltage:
Transient:
%$7PMUBHF3BOHF 7. %$ 
18
V
-PBE%VNQ&OFSHZ  8-%
+VNQ4UBSU$BQBCJMJUZ NJOVUFT  7+6.1
0QFSBUJOH"NCJFOU5FNQFSBUVSF3BOHF 5A
4UPSBHF5FNQFSBUVSF3BOHF 5STG
Temperature Coefficient (D7 PG$MBNQJOH7PMUBHF 7C BU4QFDJGJFE5FTU$VSSFOU
1.5 to 25
24.5
-55 to +125
UP 

J
V
OC
OC
%/OC
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.
©2010 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/AUML.html for current information.
Revision: September 14, 2010
AUML Varistor Series