37
Varistor Products
©2009 Littelfuse, Inc.
Revision: November 5, 2009
ML Varistor Series
Surface Mount Multilayer Varistors (MLVs) > ML Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/ML.html for current information.
ML S
eries
ML Varistor Series
RoHS
Description
The ML Series family of transient voltage surge
suppression devices is based on the Littelfuse Multilayer
fabrication technology. These components are designed
to suppress a variety of transient events, including those
specified in IEC 61000-4-2 or other standards used for
Electromagnetic Compliance (EMC). The ML Series is
typically applied to protect integrated circuits and other
components at the circuit board level.
The wide operating voltage and energy range make the ML
Series suitable for numerous applications on power supply,
control and signal lines.
The ML Series is manufactured from semiconducting
ceramics, and is supplied in a leadless, surface mount
package. The ML Series is compatible with modern reflow
and wave soldering procedures.
It can operate over a wider temperature range than Zener
diodes, and has a much smaller footprint than plastic-
housed components.
Littelfuse Inc. manufactures other multilayer series
products. See the MLE Series data sheet for ESD
applications, MHS Series data sheet for high-speed ESD
applications, the MLN Series for multiline protection and
the AUML Series for automotive applications.
Features
· AEC - Q200 compliant
·
RoHS compliant
·
Leadless 0402, 0603,
0805, 1206 and
1210 chip sizes
· Multilayer
ceramic
construction technology
·
-55°C to +125°C
operating temp. range
·
Operating voltage range
V
M(DC)
= 5.5V to 120V
·
Rated for surge
current (8 x 20s)
·
Rated for energy
(10 x 1000s)
·
Inherent bi-directional
clamping
·
No plastic or epoxy
packaging assures
better than UL94V-0
flammability rating
·
Standard low capacitance
types available
Applications
·
Suppression of inductive
switching or other
transient events such as
EFT and surge voltage at
the circuit board level
·
ESD protection for IEC
61000-4-2, MIL-STD-
883c method 3015.7,
and other industry
specifications (see also
the MLE or MLN Series)
· Provides
on-board
transient voltage
protection for ICS
and transistors
·
Used to help achieve
electromagnetic
compliance of
end products
·
Replace larger surface
mount TVS Zeners in
many applications
Size Table
Metric
EIA
1005
0402
1608
0603
2012
0805
3216
1206
3225
1210
Absolute Maximum Ratings
For ratings of individual members of a series, see device ratings and specifications table
.
Continuous
ML Series
Units
Steady State Applied Voltage:
DC Voltage Range (V
M(DC)
)
3.5 to 120
V
AC Voltage Range (V
M(AC)RMS
)
2.5 to 107
V
Transient:
Non-Repetitive Surge Current, 8/20s Waveform, (I
TM
)
4 to 500
A
Non-Repetitive Surge Energy, 10/1000s Waveform, (W
TM
)
0.02 to 2.5
J
Operating Ambient Temperature Range (T
A
)
-55 to +125
ºC
Storage Temperature Range (T
STG
)
-55 to +150
ºC
Temperature Coefficient (
DV) of Clamping Voltage (V
C
) at
Specified Test Current
<0.01
%/º C