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  • Recommendations for Soldering Terminal Leads to MOV Varistor Discs (.pdf)
    The CA and NA series of MOV varistor discs with silver electrodes are specifically designed for custom assembly and packaging. To take advantage of the excellent performance and reliability of Littelfuse varistor technology, it is important that the correct materials and processes be used when
  • Designing with Thermally Protected TMOV Varistors in TVSS Applications (.pdf)
    , are often the sources of these over-voltage transients. Under normal operating conditions, the AC line voltage applied to an MOV is not expected to exceed the MOV's Maximum ACRMS Voltage Rating or Maximum Continuous Operating Voltage (MCOV). Occasionally, over-voltage transients may occur
  • The ABCs of MOVs (.pdf)
    Metal Oxide Varistors are, and the basic function they perform. "C" is for Common Questions This section helps clarify important information about MOVs for the design engineer, and answers questions that are asked most often. Want to know more? For a copy of the latest Littelfuse MOV data book, please
  • Considerations for Selecting Littelfuse MOVs and Fuses for Industrial Motor Applications (.pdf)
    include medium and heavy motors. Transient over-voltage suppression in these applications typically require Industrial Metal Oxide Varistors (MOVs) for induced lightning surges or for switching transients created by the motor itself.These situations demand that the MOV ratings match the surges found
  • Silicon is Silicon is Silicon...Not!
    Silicon avalanche suppressor diode (SASD) based surge protection devices (SPDs) provide better performance and longer life than the typical MOV (metal oxide varistor) SPDs. However, significant improvements in performance are available through attention to details of proper design and testing

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