{"id":9675,"date":"2026-07-05T09:07:08","date_gmt":"2026-07-05T09:07:08","guid":{"rendered":"https:\/\/materialparts.com\/tvr20821ksy\/"},"modified":"2026-07-05T09:07:08","modified_gmt":"2026-07-05T09:07:08","slug":"tvr20821ksy","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/tvr20821ksy\/","title":{"rendered":"TVR20821KSY"},"content":{"rendered":"

Productos<\/h2>\n

The TVR20821KSY is a 20mm diameter metal oxide varistor (MOV) from Thinking Electronic with 820V maximum continuous operating voltage (MCOV). MOVs provide transient overvoltage protection by clamping voltage surges from lightning, switching transients, and ESD events. The 20mm disc size offers high energy absorption capability for industrial and power supply applications.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n
Disc Diameter<\/td>\n20 mm<\/td>\n<\/tr>\n
Max Continuous Voltage (MCOV)<\/td>\n820 V (AC\/DC)<\/td>\n<\/tr>\n
Varistor Voltage (V1mA)<\/td>\n915V ~ 1135V<\/td>\n<\/tr>\n
Max Clamping Voltage<\/td>\nPer datasheet @ Ipp<\/td>\n<\/tr>\n
Peak Current (8\/20us)<\/td>\nPer datasheet<\/td>\n<\/tr>\n
Energy Rating<\/td>\nPer datasheet<\/td>\n<\/tr>\n
Paquete<\/td>\n20mm disc, radial leads (5mm pitch)<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-40C to +85C<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • 20mm disc size for high energy absorption capability<\/li>\n
  • 820V MCOV suitable for 690VAC three-phase systems<\/li>\n
  • Bidirectional voltage clamping for AC and DC protection<\/li>\n
  • Fast response time (sub-nanosecond) for surge events<\/li>\n
  • Radial lead through-hole mounting for high-current PCB traces<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • AC power supply surge protection at 820V class<\/li>\n
    • Industrial equipment lightning and surge protection<\/li>\n
    • Motor drive and inverter transient suppression<\/li>\n
    • Power line surge protective device stages<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The TVR20821KSY is a 20mm diameter metal oxide varistor (MOV) from Thinking Electronic with 820V maximum continuous operating voltage (MCOV). MOVs provide transient overvoltage protection by clamping voltage surges from lightning, switching transients, and ESD events. The 20mm disc size offers high energy absorption capability for industrial and power supply applications. Key Specifications […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,20],"tags":[956],"chip_brand":[955],"class_list":["post-9675","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","tag-tvr20821ksy","chip_brand-thinking"],"acf":{"brief_explanation":"20mm MOV, 820V MCOV, radial lead, Thinking TVR series, bidirectional","date_code":"","package_case":"20mm disc, radial leads (5mm pitch)","in_stock":7530,"datasheet":"https:\/\/www.thinking.com.tw\/tvr-series.html","price":"","product_introduction":"The Thinking Electronic TVR20821KSY is a 20mm diameter metal oxide varistor (MOV) with 820V maximum continuous operating voltage (MCOV). The TVR series uses zinc oxide (ZnO) ceramic technology with a polycrystalline microstructure of conductive grains separated by insulating grain boundaries. Under normal operating voltage, the grain boundaries are insulating and the MOV draws only microamps of leakage current. When a transient voltage exceeds the varistor voltage, the grain boundaries undergo avalanche breakdown, becoming highly conductive and clamping the voltage. The 20mm disc provides substantial energy absorption for industrial power supply protection, motor drive transient suppression, and lightning surge protection in 690VAC three-phase power systems.","working_principle":"The MOV is fabricated from zinc oxide (ZnO) ceramic with a polycrystalline microstructure of conductive ZnO grains separated by insulating grain boundaries. At normal operating voltage, the grain boundaries are insulating and the MOV draws only microamps of leakage current. When a transient voltage exceeds the varistor voltage, the grain boundaries undergo avalanche breakdown, becoming highly conductive and clamping the voltage across the MOV. The energy of the transient is absorbed as heat in the ceramic body. After the transient, the MOV returns to its high-impedance state.","pin_description":"
      Terminal<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>Terminal 1<\/td>Passive<\/td>Bidirectional terminal 1<\/td><\/tr>
      2<\/td>Terminal 2<\/td>Passive<\/td>Bidirectional terminal 2<\/td><\/tr><\/table>","application_scenarios":"
      • AC power supply surge protection at 820V class for 690V systems<\/li>
      • Industrial equipment lightning and surge protection<\/li>
      • Motor drive and inverter transient suppression<\/li>
      • Power line surge protective device (SPD) stages<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Littelfuse<\/td>V820LA40A<\/td>20mm<\/td>820V MOV, 20mm disc<\/td><\/tr>
        Bourns<\/td>Mov-20D821K<\/td>20mm<\/td>820V 20mm MOV<\/td><\/tr>
        Epcos<\/td>S20K820<\/td>20mm<\/td>820V Siemens\/Epcos MOV<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/9675","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/comments?post=9675"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/9675\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=9675"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=9675"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=9675"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=9675"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}