{"id":2991,"date":"2026-05-29T01:32:07","date_gmt":"2026-05-29T01:32:07","guid":{"rendered":"https:\/\/materialparts.com\/tlp785d4-grlf\/"},"modified":"2026-05-29T01:32:07","modified_gmt":"2026-05-29T01:32:07","slug":"tlp785d4-grlf","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/tlp785d4-grlf\/","title":{"rendered":"TLP785(D4-GRL,F"},"content":{"rendered":"

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

The TLP785(D4-GRL,F from Toshiba is a transistor-output optocoupler consisting of a GaAs infrared LED optically coupled to a silicon phototransistor in a 4-pin DIP package. It provides 5000 Vrms isolation voltage and a current transfer ratio (CTR) of 100-200% (GRL rank). The D4 option includes VDE approval per EN 60747-5-2 for reinforced insulation applications.<\/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
\u062c\u0647\u062f \u0627\u0644\u0639\u0632\u0644<\/td>\n5000 Vrms (min)<\/td>\n<\/tr>\n
CTR (GRL Rank)<\/td>\n100% to 200% @ IF=5mA<\/td>\n<\/tr>\n
Collector-Emitter Voltage<\/td>\n80 V<\/td>\n<\/tr>\n
Forward Voltage (typ)<\/td>\n1.15 V @ IF=10mA<\/td>\n<\/tr>\n
VCE(sat) (max)<\/td>\n0.4 V<\/td>\n<\/tr>\n
Collector Current<\/td>\n50 mA (max)<\/td>\n<\/tr>\n
Rise\/Fall Time<\/td>\n2 \u00b5s \/ 3 \u00b5s (typ)<\/td>\n<\/tr>\n
Turn On\/Off Time<\/td>\n3 \u00b5s \/ 3 \u00b5s (typ)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-55\u00b0C to +110\u00b0C<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\n4-DIP (7.62mm pitch)<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • High isolation voltage: 5000 Vrms minimum<\/li>\n
  • VDE approved (D4 option): EN 60747-5-2<\/li>\n
  • UL recognized: UL 1577<\/li>\n
  • Wide CTR range selection (multiple ranks)<\/li>\n
  • Compact DIP-4 package<\/li>\n
  • High reliability GaAs IRED<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Switching power supply feedback isolation<\/li>\n
    • Industrial control signal isolation<\/li>\n
    • Programmable logic controller (PLC) interfaces<\/li>\n
    • AC mains voltage detection<\/li>\n
    • Communication interface isolation<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The TLP785(D4-GRL,F from Toshiba is a transistor-output optocoupler consisting of a GaAs infrared LED optically coupled to a silicon phototransistor in a 4-pin DIP package. It provides 5000 Vrms isolation voltage and a current transfer ratio (CTR) of 100-200% (GRL rank). The D4 option includes VDE approval per EN 60747-5-2 for reinforced insulation […]<\/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":[169],"class_list":["post-2991","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-toshiba"],"acf":{"brief_explanation":"Transistor output optocoupler, 5000Vrms isolation, CTR 100-200% (GRL rank), VDE approved DIP-4","date_code":"","package_case":"DIP-4 (4.6 x 7.62 x 3.5 mm, 7.62mm pitch)","in_stock":12686,"datasheet":"https:\/\/toshiba.semicon-storage.com\/cn\/semiconductor\/product\/isolators-solid-state-relays\/detail.TLP785.html","price":"$0.238 @ 1ku","product_introduction":"The TLP785(D4-GRL,F is a high-isolation optocoupler from Toshiba that pairs a gallium arsenide (GaAs) infrared emitting diode with a silicon NPN phototransistor in a compact 4-pin DIP package. The D4 option provides VDE approval per EN 60747-5-2 for reinforced insulation, making it suitable for safety-critical applications. The GRL rank specifies a current transfer ratio of 100-200% at 5 mA forward current, providing a well-defined gain for circuit design. With 5000 Vrms isolation and approvals from UL, VDE, and cUL, this device is ideal for signal isolation in power supplies and industrial equipment.","working_principle":"The TLP785 operates by converting an electrical input signal to infrared light via the GaAs LED, then back to an electrical signal via the silicon phototransistor, with optical coupling providing galvanic isolation between input and output. When forward current flows through the LED, it emits infrared radiation that is detected by the phototransistor base region, generating base current that drives collector current proportional to the LED current. The ratio of output collector current to input LED current is the current transfer ratio (CTR). The GRL rank guarantees 100-200% CTR at 5 mA. The 5000 Vrms isolation barrier is maintained by the internal optical path and package insulation, with minimum creepage of 7.0 mm and clearance of 7.0 mm.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>Anode<\/td>Input<\/td>LED anode<\/td><\/tr>
      2<\/td>Cathode<\/td>Input<\/td>LED cathode<\/td><\/tr>
      3<\/td>Emitter<\/td>Output<\/td>Phototransistor emitter<\/td><\/tr>
      4<\/td>Collector<\/td>Output<\/td>Phototransistor collector<\/td><\/tr><\/table>","application_scenarios":"
      • Switching power supply error feedback loops<\/li>
      • Isolated communication interfaces (RS-485, CAN)<\/li>
      • Industrial PLC digital I\/O isolation<\/li>
      • AC zero-crossing detection circuits<\/li>
      • Medical equipment patient isolation barriers<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Toshiba<\/td>TLP785(D4-GB,F<\/td>DIP-4<\/td>GB rank CTR 100-600%<\/td><\/tr>
        Vishay<\/td>SFH610A-3<\/td>DIP-4<\/td>CTR 100-200%, pin-compatible<\/td><\/tr>
        Everlight<\/td>EL817C<\/td>DIP-4<\/td>CTR 200-400%, lower cost<\/td><\/tr>
        Sharp<\/td>PC817C<\/td>DIP-4<\/td>CTR 200-400%, widely available<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/2991","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=2991"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/2991\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=2991"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=2991"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=2991"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=2991"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}