{"id":8605,"date":"2026-06-29T06:56:34","date_gmt":"2026-06-29T06:56:34","guid":{"rendered":"https:\/\/materialparts.com\/moc3083\/"},"modified":"2026-06-29T06:56:34","modified_gmt":"2026-06-29T06:56:34","slug":"moc3083","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/moc3083\/","title":{"rendered":"MOC3083"},"content":{"rendered":"

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

The onsemi MOC3083 is a zero-crossing triac driver optocoupler with 800 V peak blocking voltage, designed to interface logic systems with 240 VAC power lines. Packaged in a 6-pin DIP, it provides 4170 Vrms isolation, zero-voltage crossing detection, and a low 5 mA LED trigger current for reliable and noise-minimized AC power control.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n
Peak Blocking Voltage<\/td>\n800 V<\/td>\n<\/tr>\n
LED Trigger Current (IFT)<\/td>\n5 mA max<\/td>\n<\/tr>\n
\u9694\u79bb\u7535\u538b<\/td>\n4170 Vrms<\/td>\n<\/tr>\n
Static dv\/dt<\/td>\n600 V\/\u00b5s min<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40\u00b0C to +85\u00b0C<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\n6-Pin DIP<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Zero-voltage crossing to minimize EMI<\/li>\n
  • 800 V peak blocking voltage for 240 VAC operation<\/li>\n
  • Low trigger current: 5 mA max<\/li>\n
  • High static dv\/dt: 600 V\/\u00b5s guaranteed<\/li>\n
  • UL1577 approved (4170 Vrms isolation)<\/li>\n
  • DIN EN\/IEC60747-5-5 safety rated<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Solid-state relays<\/li>\n
    • Industrial solenoid and valve controls<\/li>\n
    • Lighting control systems<\/li>\n
    • AC motor starters and temperature controls<\/li>\n
    • Electromagnetic contactor drivers<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The onsemi MOC3083 is a zero-crossing triac driver optocoupler with 800 V peak blocking voltage, designed to interface logic systems with 240 VAC power lines. Packaged in a 6-pin DIP, it provides 4170 Vrms isolation, zero-voltage crossing detection, and a low 5 mA LED trigger current for reliable and noise-minimized AC power control. […]<\/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":[],"chip_brand":[144],"class_list":["post-8605","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-on"],"acf":{"brief_explanation":"Zero-crossing triac driver optocoupler, 800V, 5mA IFT, 4170Vrms isolation, 6-DIP","date_code":"","package_case":"6-Pin DIP (8.51 x 6.35 mm, 2.54 mm pitch)","in_stock":8924,"datasheet":"https:\/\/www.onsemi.com\/download\/data-sheet\/pdf\/moc3083m-d.pdf","price":"$0.36 @ 1ku","product_introduction":"The MOC3083 from onsemi is a 6-pin DIP zero-crossing triac driver optocoupler designed for interfacing logic-level control circuits to AC power loads. It consists of a GaAs infrared LED optically coupled to a monolithic silicon detector incorporating a zero-voltage crossing bilateral triac driver. The zero-crossing feature ensures the triac is triggered only when the AC line voltage is near zero, minimizing conducted and radiated EMI and reducing inrush current stress on the load. With 800 V peak blocking voltage and 600 V\/\u00b5s static dv\/dt, the MOC3083 provides robust and reliable performance for 240 VAC line control applications.","working_principle":"The MOC3083 comprises an infrared LED and a photo-detecting zero-crossing triac driver on the output side. When current flows through the input LED (5 mA minimum to trigger), infrared light illuminates the photodetector. The zero-crossing detection circuit on the output side monitors the AC line voltage and only allows the triac driver to trigger when the line voltage is within approximately \u00b120 V of zero. This zero-crossing behavior minimizes the rate of change of load current (di\/dt), reducing EMI generation and preventing false triggering from line noise. The output triac driver then provides gate current to an external power triac, which directly controls the AC load. The optical isolation of 4170 Vrms ensures safe separation between the low-voltage logic side and the high-voltage AC power side.","pin_description":"\n
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>\n
      1<\/td>Anode<\/td>Input<\/td>LED anode<\/td><\/tr>\n
      2<\/td>Cathode<\/td>Input<\/td>LED cathode<\/td><\/tr>\n
      3<\/td>NC<\/td>-<\/td>No connect (do not connect)<\/td><\/tr>\n
      4<\/td>Main Terminal<\/td>Output<\/td>Triac driver main terminal<\/td><\/tr>\n
      5<\/td>NC \/ Substrate<\/td>-<\/td>No connect (triac substrate)<\/td><\/tr>\n
      6<\/td>Main Terminal<\/td>Output<\/td>Triac driver main terminal<\/td><\/tr>\n<\/table>","application_scenarios":"
        \n
      • Solid-state relay (SSR) control for 240VAC loads<\/li>\n
      • Industrial solenoid and valve driver interfaces<\/li>\n
      • Dimming and on\/off lighting control systems<\/li>\n
      • AC motor soft-start and temperature controllers<\/li>\n
      • Electromagnetic contactor drive circuits<\/li>\n<\/ul>","alternative_models":"\n
        Manufacturer<\/th>Part Number<\/th>Block Voltage<\/th>IFT<\/th>Notes<\/th><\/tr>\n
        onsemi<\/td>MOC3081M<\/td>800 V<\/td>15 mA<\/td>Higher trigger current<\/td><\/tr>\n
        onsemi<\/td>MOC3082M<\/td>800 V<\/td>10 mA<\/td>Medium trigger current<\/td><\/tr>\n
        Vishay<\/td>MOC3083M<\/td>800 V<\/td>5 mA<\/td>Equivalent part<\/td><\/tr>\n
        onsemi<\/td>MOC3043M<\/td>400 V<\/td>5 mA<\/td>Lower voltage version<\/td><\/tr>\n<\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/8605","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=8605"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/8605\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=8605"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=8605"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=8605"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=8605"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}