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Littelfuse LA Varistor Series Bedienungsanleitung

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© 2013 Littelfuse, Inc.
123
Revised: June 3, 2013
Varistor Products
LA Varistor Series
Radial Lead Varistors > LA Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/la.html for current information.
LA Series
Description
The LA Series of transient voltage surge suppressors are
radial leaded varistors (MOVs) that are designed to be
operated continuously across AC power lines. These UL
recognized varistors require very little mounting space,
and are offered in various standard lead form options.
The LA Series varistors are available in four model
sizes: 7mm, 10mm, 14mm and 20mm; and have a
V
M(AC)RMS
voltage range from 130V to 1000V, and an
energy absorption capability up to 360J. Some LA Series
model numbers are available with clamping voltage
selections, designated by a model number suffix of
either A or B. The 'A' selection is the standard model;
the 'B' selection provides a lower clamping voltage.
See LA Series Device Ratings and Specifications
Table for part number and brand information.
Features
• Lead–free, Halogen-
Free and RoHS
compliant.
• Energy absorption
capability (W
TM
)
up to 360J
• Wide operating
voltage range
V
M(AC)RMS
130V to 1000V
• No derating up to
85ºC ambient
• Available in tape and
reel or bulk pack
Agency Approvals
Absolute Maximum Ratings
• For ratings of individual members of a series, see Device Ratings and Specifications chart
Agency Agency File Number
E320116, E56529, E135010
116895
LR91788
42201-006
Continuous
LA Series Units
Steady State Applied Voltage:
AC Voltage Range (V
M(AC)RMS
) 130 to 1000 V
DC Voltage Range (V
M(DC)
) 175 to 1200 V
Transients:
Peak Pulse Current (I
TM
)
For 8/20μs Current Wave (See Figure 2) 1200 to 6500 A
Single Pulse Energy Range
For 10/1000μs Current Wave (W
TM
) 11 to 360 J
Operating Ambient Temperature Range (T
A
) -55 to +85
O
C
Storage Temperature Range (T
STG
) -55 to +125
O
C
Temperature Coefficient (a
V
) of Clamping Voltage (V
C
) at Specified Test Current <0.01 %/
O
C
Hi-Pot Encapsulation (COATING Isolation Voltage Capability)
(Dielectric must withstand indicated DC voltage for one minute per MIL-STD 202, Method 301)
2500 V
COATING Insulation Resistance 1000 MΩ
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.
LA Varistor Series
RoHS
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Inhaltsverzeichnis

Seite 1 - LA Varistor Series

© 2013 Littelfuse, Inc.123Revised: June 3, 2013Varistor ProductsLA Varistor SeriesRadial Lead Varistors > LA SeriesSpecifications are subject to

Seite 2

© 2013 Littelfuse, Inc.132Revised: June 3, 2013Varistor ProductsLA Varistor SeriesRadial Lead Varistors > LA SeriesSpecifications are subject to

Seite 3

© 2013 Littelfuse, Inc.133Revised: June 3, 2013Varistor ProductsLA Varistor SeriesRadial Lead Varistors > LA SeriesSpecifications are subject to

Seite 4 - PERCENT OF PEAK VALUE

© 2013 Littelfuse, Inc.134Revised: June 3, 2013Varistor ProductsLA Varistor SeriesRadial Lead Varistors > LA SeriesSpecifications are subject to

Seite 5 - Pulse Rating Curves

© 2013 Littelfuse, Inc.135Revised: June 3, 2013Varistor ProductsLA Varistor SeriesRadial Lead Varistors > LA SeriesSpecifications are subject to

Seite 6

© 2013 Littelfuse, Inc.124Revised: June 3, 2013Varistor ProductsLA Varistor SeriesRadial Lead Varistors > LA SeriesSpecifications are subject to

Seite 7

© 2013 Littelfuse, Inc.125Revised: June 3, 2013Varistor ProductsLA Varistor SeriesRadial Lead Varistors > LA SeriesSpecifications are subject to

Seite 8

© 2013 Littelfuse, Inc.126Revised: June 3, 2013Varistor ProductsLA Varistor SeriesRadial Lead Varistors > LA SeriesSpecifications are subject to

Seite 9

© 2013 Littelfuse, Inc.127Revised: June 3, 2013Varistor ProductsLA Varistor SeriesRadial Lead Varistors > LA SeriesSpecifications are subject to

Seite 10

© 2013 Littelfuse, Inc.128Revised: June 3, 2013Varistor ProductsLA Varistor SeriesRadial Lead Varistors > LA SeriesSpecifications are subject to

Seite 11

© 2013 Littelfuse, Inc.129Revised: June 3, 2013Varistor ProductsLA Varistor SeriesRadial Lead Varistors > LA SeriesSpecifications are subject to

Seite 12

© 2013 Littelfuse, Inc.130Revised: June 3, 2013Varistor ProductsLA Varistor SeriesRadial Lead Varistors > LA SeriesSpecifications are subject to

Seite 13

© 2013 Littelfuse, Inc.131Revised: June 3, 2013Varistor ProductsLA Varistor SeriesRadial Lead Varistors > LA SeriesSpecifications are subject to

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