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Varistor Products
Revision: January 9, 2009
©2008 Littelfuse, Inc.
MA Varistor Series
Axial Lead / Application Specific Varistors > MA Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/ma.html for current information.
MA Series
Description
The MA Series of transient surge suppressors are axial
lead Metal Oxide Varistors (MOVs) for use in a wide
variety of board level industrial and commercial electronic
equipment. They are intended to protect components and
signal/data lines from low energy transients where the
small axial lead package is required.
The MA Series is offered with standard ('S' suffix) or
tightened ('B' suffix) clamping voltage.
See MA Series Device Ratings and Specifications Table for
part number and brand information.
Features
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disc size
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package
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range:
V
M(AC)RMS
9V to 264V
V
M(DC)
13V to 365V
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reel or bulk packaging
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85ºC ambient
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improved performance
for high temperature
Lead-free wave
soldering process.
Absolute Maximum Ratings
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.
Continuous MA Series Units
Steady State Applied Voltage:
AC Voltage Range (V
M(AC)RMS
) 9 to 264 V
DC Voltage Range (V
M(DC)
) 13 to 365 V
Transient:
Peak Pulse Current (I
TM
)
For 8/20μs Current Wave(See Figure 2) 40 to 100 A
Single-Pulse Energy Range
For 2ms Current Square Wave (W
TM
) 0.06 to 1.7 J
Operating Ambient Temperature Range (T
A
) -55 to +85 °C
Storage Temperature Range (T
STG
) -55 to +125 °C
Temperature Coefficient (αV) of Clamping Voltage (V
C
) at Specified Test Current
<0.01 %/°C
Hi-Pot Encapsulation (COATING Isolation Voltage Capability)
Dielectric must withstand indicated DC voltage for one minute per MIL-STD 202, Method 301)
1000 V
COATING Insulation Resistance 1000 MΩ
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MA Varistor Series
RoHS
Agency Approvals
Agency Agency File Number
None
