Overview
Littelfuse specializes in the production of High Reliability Varistors, which are components designed for applications requiring stringent quality and reliability standards. These varistors are suitable for use in contexts adhering to military specifications or those of comparable rigor. Due to their construction, they are more resistant to radiation than Silicon Diode suppressors. The datasheet presents key information pertinent to the High Reliability Varistors offered by Littelfuse, with an emphasis on their certification, performance, and customization options.
Description of High Reliability Varistors
The varistors discussed in this datasheet are distinguished by their enhanced performance features which comply with military standards such as MILSTD-19500 and MILSTD-750, Method 202. These standards are indicative of the high level of assurance in quality and reliability that these components meet. A graphical representation is provided (Figure 1), showcasing the superior radiation resistance of these varistors relative to traditional Silicon Diode suppressors.
Varistor Series and Recognitions
ZA Series: The line-up includes the ZA Series, entailing four varistor categories. These are delineated by their specific qualifications:
– DSSC Qualified Parts List (QPL) MIL-R-83530: Includes 4 items currently available.
– Littelfuse High Reliability Series TX Equivalents: A more extensive selection with 29 items available.
– Custom Types: Varistors can be customized to specific customer requirements or to Standard Military Flow, ensuring a broad range of application possibilities.
Agency Approvals and Certifications
The varistors come with a host of approvals and certifications from recognized entities, further solidifying their status as reliable components:
– DSSC Approved: Validates compliance with Defense Supply Center Columbus specifications.
– QPL Listed: Identified as qualified products listed within governmental procurement.
– CECC Certified: Meets the European conformity standards for electronic components.
– ISO Approved: Complies with International Organization for Standardization criteria.
– UL Recognized: Verified for safety by the Underwriters Laboratories.
– CSA Certified: Certified by the Canadian Standards Association for safety and performance.
Additional Information
The datasheet specifies that Commercial Item Descriptors (CID) for these varistors have been established for government usage. Specifically, CID AA-55564-3 is identified in connection with the Littelfuse ZA Series.
For users seeking further details, information on obtaining product datasheets, resource materials, and sample requests is provided. It is noted that specifications may change without notice and that the latest revision of the datasheet was on September 3, 2014.
Manual:
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