{"id":9596,"date":"2026-07-04T04:22:35","date_gmt":"2026-07-04T04:22:35","guid":{"rendered":"https:\/\/materialparts.com\/erze11a621\/"},"modified":"2026-07-04T04:22:35","modified_gmt":"2026-07-04T04:22:35","slug":"erze11a621","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/erze11a621\/","title":{"rendered":"ERZE11A621"},"content":{"rendered":"

\u4ea7\u54c1\u6982\u89c8<\/h2>\n

The ERZE11A621 is a Panasonic metal oxide varistor (MOV) designed for transient overvoltage protection. With a varistor voltage of 620V and high energy absorption capability in a disc-type radial leaded package, it protects power supply inputs from surge and lightning-induced voltage transients in industrial and commercial equipment.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
Varistor Voltage (V1mA)<\/td>\n620V (nominal, 558V-682V range)<\/td>\n<\/tr>\n
Max Continuous Voltage (AC)<\/td>\n385V RMS<\/td>\n<\/tr>\n
Max Continuous Voltage (DC)<\/td>\n505V<\/td>\n<\/tr>\n
Clamping Voltage (VC)<\/td>\n1020V @ 50A<\/td>\n<\/tr>\n
Peak Current (8\/20 µs)<\/td>\n5 kA<\/td>\n<\/tr>\n
Energy Rating (2ms)<\/td>\n190 J<\/td>\n<\/tr>\n
Average Power Dissipation<\/td>\n0.6W<\/td>\n<\/tr>\n
Capacitance<\/td>\n300 pF @ 1 kHz<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40°C to +85°C<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nDisc 14mm (radial leads, 7.5mm pitch)<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • 620V varistor voltage provides overvoltage protection for 380-400V AC mains input<\/li>\n
  • 5 kA peak surge current rating for lightning and switching surge absorption<\/li>\n
  • 190 J energy capability for high-energy transient suppression<\/li>\n
  • Low clamping voltage ratio limits voltage stress on downstream components<\/li>\n
  • Radial leaded disc package for through-hole mounting on power supply PCBs<\/li>\n
  • UL1449 and VDE safety certifications<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • AC mains input surge protection in SMPS front-end<\/li>\n
    • Industrial equipment power line lightning protection<\/li>\n
    • Telecom power supply overvoltage clamp<\/li>\n
    • Motor drive input transient suppression<\/li>\n
    • UPS input surge protection device<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The ERZE11A621 is a Panasonic metal oxide varistor (MOV) designed for transient overvoltage protection. With a varistor voltage of 620V and high energy absorption capability in a disc-type radial leaded package, it protects power supply inputs from surge and lightning-induced voltage transients in industrial and commercial equipment. Key Specifications Varistor Voltage (V1mA) 620V […]<\/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":[54,13],"tags":[844],"chip_brand":[238],"class_list":["post-9596","post","type-post","status-publish","format-standard","hentry","category-diodes","category-integrated-circuits-ics","tag-erze11a621","chip_brand-panasonic"],"acf":{"brief_explanation":"620V MOV varistor, 5kA surge, 385VAC max continuous, disc 14mm radial, for AC mains surge protection","date_code":"","package_case":"Disc 14mm (Radial Leaded, 7.5mm pitch)","in_stock":12249,"datasheet":"https:\/\/industrial.panasonic.com\/cdbs\/www-data\/pdf\/AWA0000\/AWA0000C19.pdf","price":"$0.25 @ 1ku","product_introduction":"The ERZE11A621 is a Panasonic metal oxide varistor (MOV) with 620V nominal varistor voltage, designed to protect 380-400V AC power line inputs from lightning and switching surge transients. The disc-type 14mm radial leaded package provides 5 kA peak surge current capability (8\/20 \u00b5s waveform) and 190 J energy absorption (2 ms), ensuring robust protection for SMPS front-ends, industrial equipment power supplies, and telecom rectifier inputs. The device clamps at 1020V under 50A surge current, limiting the voltage stress on downstream components during transient events. UL1449 and VDE certified.","working_principle":"The ERZE11A621 is a polycrystalline zinc oxide (ZnO) varistor with a microstructure of ZnO grains separated by intergranular barriers. At normal operating voltages (below 385V AC), the intergranular barriers present high impedance (>1 M\u03a9), allowing negligible leakage current. When a transient voltage exceeds the varistor voltage (620V at 1 mA), the intergranular barriers undergo avalanche breakdown, dramatically reducing the impedance and shunting the surge current to ground. The clamping voltage (1020V at 50A) is determined by the nonlinear V-I characteristic of the grain boundary junctions. After the transient subsides, the varistor returns to its high-impedance state.","pin_description":"
      Terminal<\/th>Function<\/th><\/tr>
      Lead 1<\/td>Line side connection (AC mains input)<\/td><\/tr>
      Lead 2<\/td>Neutral\/ground side connection<\/td><\/tr><\/table>","application_scenarios":"
      • SMPS front-end surge protection between AC mains input and rectifier bridge<\/li>
      • Industrial PLC power supply MOV protection stage with thermal fuse<\/li>
      • Telecom -48V rectifier input lightning surge clamp<\/li>
      • Motor drive AC input overvoltage protection with thermal disconnect<\/li>
      • UPS AC input surge arrestor for IEC 61000-4-5 compliance<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        ERZE11A560<\/td>Panasonic<\/td>560V variant for 350VAC mains<\/td><\/tr>
        V275LA40A<\/td>Littelfuse<\/td>Alternative MOV 680V disc 14mm<\/td><\/tr>
        B72214S0431K101<\/td>TDK\/Epcos<\/td>Alternative 620V MOV disc<\/td><\/tr>
        ERZE11A680<\/td>Panasonic<\/td>680V variant for 420VAC mains<\/td><\/tr>
        V360LA40A<\/td>Littelfuse<\/td>Alternative 620V MOV 20mm disc<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/9596","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/comments?post=9596"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/9596\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=9596"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=9596"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=9596"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=9596"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}