Littelfuse MLA Varistor Series - Manual

© 2013 Littelfuse, Inc. 39
Revised: December 16, 2013
Varistor Products
MLA Varistor Series
Surface Mount Multilayer Varistors (MLVs) > MLA Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/ML.html or MLA.html for current information.
MLA S
eries
MLA Varistor Series
RoHS
Description
The MLA Series (also known as "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 MLA 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
MLA Series suitable for numerous applications on power
supply, control and signal lines.
The MLA Series is manufactured from semiconducting
ceramics, and is supplied in a leadless, surface mount
package. The MLA 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
• 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 20µs)
• Rated for energy
(10 x 1000µs)
• Inherent bi-directional
clamping
• Standard low capacitance
types available
• ESD rated to IEC
61000-4-2, Level 4: Air
Discharge 15KV and
Contact Discharge 8KV
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 (Level 4),
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, 8/20µs Waveform, (I
TM
) 4 to 500 A
Non-Repetitive Surge Energy, 10/1000µs 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 (αV) of Clamping Voltage (V
C
) at
Specified Test Current
<0.01 %/º C