{"id":5181,"date":"2026-06-09T10:12:15","date_gmt":"2026-06-09T10:12:15","guid":{"rendered":"https:\/\/materialparts.com\/4n33sr2m\/"},"modified":"2026-06-09T10:12:15","modified_gmt":"2026-06-09T10:12:15","slug":"4n33sr2m","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/4n33sr2m\/","title":{"rendered":"4N33SR2M"},"content":{"rendered":"

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

4N33SR2M from onsemi is a darlington-output photocoupler with ultra-high CTR (500% min) and 5000Vrms isolation. Allows very low LED drive (1mA) to control output loads. Base pin for speed optimization.<\/p>\n

\u5de5\u4f5c\u539f\u7406<\/h2>\n

GaAs LED optically coupled to darlington phototransistor pair. First stage photocurrent drives second stage base. Darlington multiplication provides CTR of 500% or more.<\/p>\n

Pin Description<\/h2>\n\n\n\n\n\n\n\n
\u9488\u811a<\/th>\n\u540d\u79f0<\/th>\n\u529f\u80fd<\/th>\n<\/tr>\n
1<\/td>\n\u9633\u6781<\/td>\nLED anode<\/td>\n<\/tr>\n
2<\/td>\n\u9634\u6781<\/td>\nLED cathode<\/td>\n<\/tr>\n
4<\/td>\n\u53d1\u5c04\u5668<\/td>\nDarlington emitter<\/td>\n<\/tr>\n
5<\/td>\n\u6536\u85cf\u5bb6<\/td>\nDarlington collector<\/td>\n<\/tr>\n
6<\/td>\n\u57fa\u5730<\/td>\nFirst stage base<\/td>\n<\/tr>\n<\/table>\n

\u5e94\u7528<\/h2>\n
    \n
  • Low-power relay\/solenoid driver<\/li>\n
  • Industrial logic isolation<\/li>\n
  • AC zero-cross trigger<\/li>\n<\/ul>\n

    Alternative Models<\/h2>\n\n\n\n\n
    \u5236\u9020\u5546<\/th>\n\u90e8\u4ef6\u7f16\u53f7<\/th>\n\u8bf4\u660e<\/th>\n<\/tr>\n
    onsemi<\/td>\n4N32<\/td>\nLower CTR<\/td>\n<\/tr>\n
    Vishay<\/td>\nSFH6343<\/td>\nSimilar darlington<\/td>\n<\/tr>\n<\/table>","protected":false},"excerpt":{"rendered":"

    Product Overview 4N33SR2M from onsemi is a darlington-output photocoupler with ultra-high CTR (500% min) and 5000Vrms isolation. Allows very low LED drive (1mA) to control output loads. Base pin for speed optimization. Working Principle GaAs LED optically coupled to darlington phototransistor pair. First stage photocurrent drives second stage base. Darlington multiplication provides CTR of 500% […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,20],"tags":[],"chip_brand":[144],"class_list":["post-5181","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-on"],"acf":{"brief_explanation":"Darlington photocoupler, 5000Vrms, CTR 500% min, DIP-6","date_code":"","package_case":"DIP-6 (8.7 x 6.4 x 3.9mm, 2.54mm pitch)","in_stock":3679,"datasheet":"https:\/\/www.onsemi.com\/pub\/Collateral\/4N32-D.PDF","price":"$0.80 @ 1ku","product_introduction":"4N33SR2M from onsemi is a darlington-output photocoupler with ultra-high CTR (500% min) and 5000Vrms isolation. Allows very low LED drive (1mA) to control output loads. Base pin for speed optimization.","working_principle":"GaAs LED optically coupled to darlington phototransistor pair. First stage photocurrent drives second stage base. Darlington multiplication provides CTR of 500% or more.","pin_description":"
    Pin<\/th>Name<\/th>Function<\/th><\/tr>
    1<\/td>Anode<\/td>LED anode<\/td><\/tr>
    2<\/td>Cathode<\/td>LED cathode<\/td><\/tr>
    4<\/td>Emitter<\/td>Darlington emitter<\/td><\/tr>
    5<\/td>Collector<\/td>Darlington collector<\/td><\/tr>
    6<\/td>Base<\/td>First stage base<\/td><\/tr><\/table>","application_scenarios":"
    • Low-power relay\/solenoid driver<\/li>
    • Industrial logic isolation<\/li>
    • AC zero-cross trigger<\/li><\/ul>","alternative_models":"
      Manufacturer<\/th>Part Number<\/th>Notes<\/th><\/tr>
      onsemi<\/td>4N32<\/td>Lower CTR<\/td><\/tr>
      Vishay<\/td>SFH6343<\/td>Similar darlington<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5181","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=5181"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5181\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=5181"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=5181"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=5181"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=5181"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}