{"id":5123,"date":"2026-06-09T08:52:50","date_gmt":"2026-06-09T08:52:50","guid":{"rendered":"https:\/\/materialparts.com\/ltv-356t-b\/"},"modified":"2026-06-09T08:52:50","modified_gmt":"2026-06-09T08:52:50","slug":"ltv-356t-b","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/ltv-356t-b\/","title":{"rendered":"LTV-356T-B"},"content":{"rendered":"

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

The LTV-356T-B from Lite-On is a single-channel phototransistor optocoupler in compact SOP-4 package, featuring high CTR (130-260%), 3750Vrms isolation, and UL\/VDE\/CSA safety approvals.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u5236\u9020\u5546<\/td>\n\u5149\u5b9d<\/td>\n<\/tr>\n
\u6e20\u9053<\/td>\n1<\/td>\n<\/tr>\n
CTR<\/td>\n130% to 260% @ IF=5mA<\/td>\n<\/tr>\n
\u9694\u79bb\u7535\u538b<\/td>\n3750 Vrms<\/td>\n<\/tr>\n
VCEO<\/td>\n80V<\/td>\n<\/tr>\n
Forward Voltage<\/td>\n1.2V typ<\/td>\n<\/tr>\n
Forward Current<\/td>\n50 mA max<\/td>\n<\/tr>\n
VCE(sat)<\/td>\n200 mV max<\/td>\n<\/tr>\n
Bandwidth<\/td>\n4\u00b5s rise \/ 3\u00b5s fall<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nSOP-4 (Mini-Flat)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-55\u00b0C to +110\u00b0C<\/td>\n<\/tr>\n
Safety<\/td>\nUL1577, VDE, CSA, CQC<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • High isolation: 3750 Vrms<\/li>\n
  • High CTR: 130-260% (Grade B)<\/li>\n
  • Compact SOP-4 package (30% smaller than DIP)<\/li>\n
  • Low VCE(sat): 200 mV max<\/li>\n
  • ESD HBM 8000V<\/li>\n
  • MSL-1 unlimited<\/li>\n
  • UL1577, VDE, CSA, CQC approved<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Switching power supplies<\/li>\n
    • Smart meters<\/li>\n
    • Industrial control<\/li>\n
    • Office equipment<\/li>\n
    • Household appliances<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LTV-356T-B from Lite-On is a single-channel phototransistor optocoupler in compact SOP-4 package, featuring high CTR (130-260%), 3750Vrms isolation, and UL\/VDE\/CSA safety approvals. Key Specifications Manufacturer Lite-On Channels 1 CTR 130% to 260% @ IF=5mA Isolation Voltage 3750 Vrms VCEO 80V Forward Voltage 1.2V typ Forward Current 50 mA max VCE(sat) 200 mV […]<\/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":[212],"class_list":["post-5123","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-liteon"],"acf":{"brief_explanation":"Single-ch phototransistor optocoupler, CTR 130-260%, 3750Vrms, SOP-4","date_code":"","package_case":"SOP-4 (4.4 x 2.9 x 2.4 mm, 2.54mm pitch)","in_stock":10584,"datasheet":"https:\/\/www.liteon.com\/en\/product\/opto-coupler\/phototransistor-coupler\/ltv-356t-b","price":"$0.25 @ 1ku","product_introduction":"The LTV-356T-B from Lite-On is a single-channel phototransistor optocoupler providing 3750 Vrms galvanic isolation in a compact SOP-4 package. The Grade B CTR range of 130-260% at IF=5mA ensures reliable signal transfer with minimal drive current. The device features 80V VCEO, low 200 mV VCE(sat), and comprehensive safety approvals (UL1577, VDE, CSA, CQC). The 30% smaller footprint compared to DIP-4 equivalents suits high-density PCB designs.","working_principle":"The LTV-356T-B pairs an infrared LED with a silicon phototransistor in an optically coupled isolation package. When current flows through the LED, emitted infrared light is detected by the phototransistor base region, causing collector current proportional to LED current (defined by CTR). The optical coupling provides electrical isolation while the SOP-4 package maintains creepage\/clearance distances exceeding 5.0mm per safety requirements.","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>
      3<\/td>Emitter<\/td>Phototransistor emitter<\/td><\/tr>
      4<\/td>Collector<\/td>Phototransistor collector<\/td><\/tr><\/table>","application_scenarios":"
      • Switching power supply feedback loops<\/li>
      • Smart meter isolation<\/li>
      • Industrial PLC I\/O isolation<\/li>
      • Office equipment signal coupling<\/li>
      • Household appliance control isolation<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Notes<\/th><\/tr>
        Lite-On<\/td>LTV-356T-C<\/td>Higher CTR grade<\/td><\/tr>
        Vishay<\/td>SFH6156-4T<\/td>Similar DIP-4 alternative<\/td><\/tr>
        Everlight<\/td>EL817B<\/td>Industry standard DIP-4<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5123","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=5123"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5123\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=5123"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=5123"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=5123"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=5123"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}