{"id":9609,"date":"2026-07-04T10:33:26","date_gmt":"2026-07-04T10:33:26","guid":{"rendered":"https:\/\/materialparts.com\/jvr10s821k87p50\/"},"modified":"2026-07-04T10:33:26","modified_gmt":"2026-07-04T10:33:26","slug":"jvr10s821k87p50","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/jvr10s821k87p50\/","title":{"rendered":"JVR10S821K87P50"},"content":{"rendered":"

\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n

The JVR10S821K87P50 is a metal oxide varistor (MOV) from Joyin (JOYIN CO., LTD) designed for transient voltage surge suppression. With a nominal varistor voltage of 820 V at 1 mA, a 10 mm disc diameter, and a clamping voltage rating suitable for 510 V AC \/ 670 V DC maximum operating voltage, this device protects electronic circuits from overvoltage transients in power supplies, appliances, and industrial equipment.<\/p>\n

\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
Varistor Voltage (V1mA)<\/td>\n820 V nominal (\u00b110%)<\/td>\n<\/tr>\n
Max Operating Voltage (AC)<\/td>\n510 Vrms<\/td>\n<\/tr>\n
Max Operating Voltage (DC)<\/td>\n670 V<\/td>\n<\/tr>\n
Max Clamping Voltage<\/td>\n~1350 V @ surge current<\/td>\n<\/tr>\n
Disc Diameter<\/td>\n10 mm<\/td>\n<\/tr>\n
Withstanding Surge Current (8\/20 \u00b5s)<\/td>\n~1250 A<\/td>\n<\/tr>\n
Energy (10\/1000 \u00b5s)<\/td>\n~20 J<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40\u00b0C to 85\u00b0C<\/td>\n<\/tr>\n
Lead Style<\/td>\nVertical kink, 7.5 mm lead pitch<\/td>\n<\/tr>\n
Tolerance<\/td>\nK = \u00b110%<\/td>\n<\/tr>\n<\/table>\n

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    \n
  • 10 mm disc diameter for high energy absorption capability<\/li>\n
  • Broad operating voltage range for 510 VAC \/ 670 VDC applications<\/li>\n
  • Fast response time (<25 ns) for effective transient suppression<\/li>\n
  • UL 1449 4th edition and VDE recognized<\/li>\n
  • RoHS compliant and halogen-free<\/li>\n
  • Symmetric V-I characteristics (bidirectional, no polarity)<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Power supply transient voltage protection<\/li>\n
    • Home appliance surge protection<\/li>\n
    • Industrial equipment overvoltage suppression<\/li>\n
    • Telecom power line surge protection<\/li>\n
    • Smart meter and PLC equipment protection<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The JVR10S821K87P50 is a metal oxide varistor (MOV) from Joyin (JOYIN CO., LTD) designed for transient voltage surge suppression. With a nominal varistor voltage of 820 V at 1 mA, a 10 mm disc diameter, and a clamping voltage rating suitable for 510 V AC \/ 670 V DC maximum operating voltage, this […]<\/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":[13,44],"tags":[860],"chip_brand":[859],"class_list":["post-9609","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-pressure-sensors","tag-jvr10s821k87p50","chip_brand-joyin"],"acf":{"brief_explanation":"820V MOV varistor, 10mm disc, 510VAC\/670VDC, \u00b110%, UL\/VDE approved, radial lead","date_code":"","package_case":"10mm disc, radial lead, 7.5mm pitch","in_stock":3514,"datasheet":"https:\/\/cdn.promelec.ru\/upload\/items\/2024\/03\/19\/MOV_JVR_datasheet20240222.pdf","price":"$0.25 @ 100+","product_introduction":"The JVR10S821K87P50 from Joyin is a metal oxide varistor (MOV) with a nominal varistor voltage of 820 V (V1mA) and a tolerance of \u00b110%. Designed with a 10 mm disc diameter, it provides high energy absorption for protecting electronic circuits from transient overvoltage events. The device supports a maximum continuous operating voltage of 510 VAC \/ 670 VDC, making it suitable for high-voltage power supply input protection, industrial equipment, and smart metering applications. It features UL 1449 4th edition and VDE approvals, RoHS compliance, and halogen-free construction. The symmetric V-I characteristics provide bidirectional clamping without polarity concerns.","working_principle":"The JVR10S821K87P50 operates based on the nonlinear voltage-current characteristic of zinc oxide (ZnO) grain boundaries: (1) Normal Operation \u2014 at voltages below the varistor voltage (820 V), the MOV presents a very high impedance (megaohms), drawing negligible leakage current and appearing transparent to the circuit; (2) Transient Clamping \u2014 when a voltage transient exceeds the varistor voltage, the ZnO grain boundaries undergo avalanche breakdown, causing the MOV impedance to drop dramatically to a few ohms, clamping the voltage across its terminals; (3) Energy Absorption \u2014 the surge current flows through the MOV, converting the transient energy into heat; (4) Recovery \u2014 once the transient subsides and the voltage drops below the clamping threshold, the MOV returns to its high-impedance state. The 10 mm disc provides sufficient thermal mass to absorb repeated surge events without degradation.","pin_description":"
      Lead<\/th>Function<\/th><\/tr>
      Lead 1<\/td>Terminal 1 \u2014 connect across the line to be protected<\/td><\/tr>
      Lead 2<\/td>Terminal 2 \u2014 connect to ground or return path<\/td><\/tr><\/table>","application_scenarios":"
      • AC mains input protection on a 380 VAC 3-phase industrial power supply suppressing lightning-induced surges<\/li>
      • Home appliance (washing machine, refrigerator) varistor across AC input for surge protection per IEC 61000-4-5<\/li>
      • Smart meter power supply module protecting the metering IC from transient overvoltage<\/li>
      • Telecom rectifier input protecting against power line surges and switching transients<\/li>
      • Solar inverter DC bus overvoltage protection on 600 V DC rail<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        JVR10N821K<\/td>Joyin<\/td>Similar, straight lead variant<\/td><\/tr>
        V10E820A<\/td>Littelfuse<\/td>Competitive 10 mm MOV, 820 V<\/td><\/tr>
        ERZ-V10D821<\/td>Panasonic<\/td>Equivalent 10 mm MOV from Panasonic<\/td><\/tr>
        S10K820<\/td>EPCOS\/TDK<\/td>Standard 10 mm MOV, 820 V, SIOV series<\/td><\/tr>
        TNR10V821K<\/td>Nippon Chemi-Con<\/td>10 mm disc varistor, 820 V alternative<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/9609","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/comments?post=9609"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/9609\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=9609"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=9609"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=9609"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=9609"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}