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Varistor Products

Revision: September 3, 2009

©2009 Littelfuse, Inc.

CA Varistor Series

High Energy Industrial Disc Varistors > CA Series

Specifications are subject to change without notice.

Please refer to www.littelfuse.com/series/ca.html for current information.

Passivation Layer

The standard CA Series is supplied with passivation

layer around the outside perimeter of the disc forming

an electrical insulator as detailed in the dimensional

drawing. For other options contact factory. (See Ordering

Information)

Encapsulated Recommendations

After lead attachment, the disc/lead assembly may be

coated or encapsulated in a package to provide electrical

insulation and isolation from environmental contamination

as required by the application. Coating/Filler materials for

containers may include silicones, polyurethanes, and some

epoxy resins. Materials containing halogens, sulfides, or

alkalines are not recommended.

Electrode Metallization

CA60 discs are supplied as standard with sintered Silver

electrodes. For other available options please contact

Littelfuse.

Stacking and Contact Pressure Recommendations

When applications require the stacking of CA60 discs,

or when an electrical connection is made by pressure

contacts, the pressure applied to the CA60 disc electrode

surface should be minimum 2.2kgs (5 pounds) and

Part Numbering System

VARISTOR DESIGNATOR

DISC SIZE (mm) DIAMETER

SERIES DESIGNATOR

V 25 1 CA 60

Packaging and Shipping

The CA Series is supplied in bulk for shipment. Discs are

scratching or edge-chipping during shipment.

No branding or any other type of marking appears on the

CA disc itself.

CA60 discs are supplied as standard with sintered Silver

electrodes and glass passivation. For other available

options please contact factory.

250

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TIME (SEC)

Recommended Reflow Temperature Profile