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187

Revised: October 9, 2013

Varistor Products

MA Varistor Series

Axial Lead / Application Speciﬁ c Varistors > MA Series

Speciﬁ cations 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' sufﬁ x) or

tightened ('B' sufﬁ x) clamping voltage.

See MA Series Device Ratings and Speciﬁ cations Table for

part number and brand information.

Features

• 3mm diameter disc size

• Small axial lead package

• Wide operating voltage

range:

M(AC)RMS

9V to 264V

M(DC)

13V to 365V

• Available in tape and

reel or bulk packaging

• No derating up to

85ºC ambient

• New black epoxy offers

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

speciﬁ cation 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

)

For 8/20μs Current Wave(See Figure 2) 40 to 100 A

Single-Pulse Energy Range

For 2ms Current Square Wave (W

) 0.06 to 1.7 J

Operating Ambient Temperature Range (T

) -55 to +85 °C

Storage Temperature Range (T

STG

) -55 to +125 °C

Temperature Coefficient (V) of Clamping Voltage (V

) 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 M Ω

• For ratings of individual members of a series, see Device Ratings and Speciﬁ cations chart

MA Varistor Series

Agency Approvals

Agency Agency File Number

None

RoHS

1 2 3 4 5

Sommario

Pagina 1 - MA Varistor Series

Pagina 2

Pagina 3 - Repetitive Surge Capability

Pagina 4 - Maximum Clamping Voltage

Pagina 5 - V XXX MA XX

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