V82RA8X2749 Allicdata Electronics

V82RA8X2749 Circuit Protection

Allicdata Part #:

V82RA8X2749-ND

Manufacturer Part#:

V82RA8X2749

Price: $ 2.09
Product Category:

Circuit Protection

Manufacturer: Littelfuse Inc.
Short Description: VARISTOR 82V 1.2KA ENCASED
More Detail: 82V 1.2kA Varistor 1 Circuit Through Hole Radial, ...
DataSheet: V82RA8X2749 datasheetV82RA8X2749 Datasheet/PDF
Quantity: 1000
Moisture Sensitivity Level (MSL): 1 (Unlimited)
Lead Free Status / RoHS Status: Lead free / RoHS Compliant
4000 +: $ 1.89533
Stock 1000Can Ship Immediately
$ 2.09
Specifications
Varistor Voltage (Typ): 82V
Package / Case: Radial, Box
Mounting Type: Through Hole
Operating Temperature: -55°C ~ 125°C (TA)
Capacitance @ Frequency: 500pF @ 1MHz
Number of Circuits: 1
Energy: 4.0J
Current - Surge: 1.2kA
Varistor Voltage (Max): 90.2V
Series: RA
Varistor Voltage (Min): 73.8V
Maximum DC Volts: 66V
Maximum AC Volts: 50V
Moisture Sensitivity Level (MSL): --
Part Status: Active
Lead Free Status / RoHS Status: --
Packaging: Bulk 
Description

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The V82RA8X2749 is an automatically operated metal oxide varistor, commonly known as MOV. Varistors are a form of surge protection device used in a wide variety of applications, and are available in other shapes and sizes depending on the particular application.

The main purpose of MOVs is to provide protection against voltage transients ESD (electrostatic discharge), EFT (electrical fast transient) and surges such as lightning strike, voltage spike or short circuit. Unlike other surge protection devices, MOVs do not contain a fuse, so they do not need to be replaced after an over-voltage event has occurred.

The V82RA8X2749 is designed for direct connection with electrical systems. It is compatible with many different types of systems, including automotive, industrial and residential applications. The device is constructed from an external case made of aluminium oxide, around a solid core of zinc oxide.

When under normal operating conditions, the MOV allows regular current to pass through without issue. When voltage transients occur, clamps or snaps are formed on the zinc oxide, reducing the voltage to a safe level. The V82RA8X2749 is able to tolerate large surges and is designed to be able to withstand a surge of up to 10,000 amps.

Coupled with its convenient size and compatibility, the V82RA8X2749 is a popular choice for many applications, including power-line protection, automotive electronics, industrial control systems, consumer electronics, communication systems, lighting systems and mains power distribution.

The working principle of the V82RA8X2749 is simple yet efficient. When an electrical current passes through the MOV, the internal resistance of the zinc oxide changes, forming clamps to reduce the voltage. In addition, the MOV dissipates energy in the form of heat during an over-voltage event, thus providing protection to the electrical systems.

In conclusion, the V82RA8X2749 is a cost-effective and reliable surge protection device, suitable for many different applications. Its simple working principle ensures that it is able to provide effective voltage reduction and energy dissipation during over-voltage events and can withstand large surges of up to 10,000 amps.

The specific data is subject to PDF, and the above content is for reference

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