{"id":8019,"date":"2026-06-28T08:47:34","date_gmt":"2026-06-28T08:47:34","guid":{"rendered":"https:\/\/ic-vendor.com\/vo618a-3x017t-2\/"},"modified":"2026-06-28T11:36:09","modified_gmt":"2026-06-28T11:36:09","slug":"vo618a-3x017t-2","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/zh\/vo618a-3x017t-2\/","title":{"rendered":"VO618A-3X017T"},"content":{"rendered":"<h2>VO618A-3X017T Overview<\/h2>\n<p>The VO618A-3X017T is a zero-crossing phototriac optocoupler from Vishay with 800V blocking voltage and 5300VRMS isolation voltage in a DIP-6 package. The built-in zero-crossing detector reduces EMI, making it ideal for AC load control applications.<\/p>\n<h3>\u4e3b\u8981\u529f\u80fd<\/h3>\n<ul>\n<li>Blocking voltage: 800V<\/li>\n<li>Isolation voltage: 5300VRMS<\/li>\n<li>Zero-crossing trigger<\/li>\n<li>Trigger LED current: 10mA max<\/li>\n<li>dV\/dt: 10000V\/us<\/li>\n<li>Operating temperature: -40C to 85C<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>VO618A-3X017T Overview The VO618A-3X017T is a zero-crossing phototriac optocoupler from Vishay with 800V blocking voltage and 5300VRMS isolation voltage in a DIP-6 package. The built-in zero-crossing detector reduces EMI, making it ideal for AC load control applications. Key Features Blocking voltage: 800V Isolation voltage: 5300VRMS Zero-crossing trigger Trigger LED current: 10mA max dV\/dt: 10000V\/us Operating [&hellip;]<\/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":[136],"class_list":["post-8019","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-vishay"],"acf":{"brief_explanation":"Optocoupler, 5300Vrms, CTR 50-80%, SOP-4","date_code":"","package_case":"SOP-4 (4.4 x 4.0 x 2.5 mm)","in_stock":3291,"datasheet":"https:\/\/www.vishay.com\/docs\/81968\/vo618a.pdf","price":"$0.55 @ 1ku","product_introduction":"The VO618A-3X017T is a single-channel phototransistor output optocoupler from Vishay in a 4-pin SMD (gull wing) package, providing 5300 Vrms isolation voltage with a current transfer ratio (CTR) of 100 to 200 percent at 1 mA forward current. It features a VCEO of 80 V, low saturation voltage of 250 mV at 2.5 mA \/ 1 mA, and fast switching with 3 us turn-on and 2.3 us turn-off times. The device operates from -55 C to +110 C, making it suitable for industrial, telecom, and smart meter applications requiring reinforced insulation and high CTR linearity.","working_principle":"The VO618A-3X017T couples an infrared LED on the input side to a silicon NPN phototransistor on the output side through an optically transparent insulation barrier. When forward current flows through the LED (If), it emits infrared light that passes through the internal optical coupling and illuminates the base region of the phototransistor. The absorbed photons generate base current, which is amplified by the transistor action to produce a collector current (Ic) proportional to the LED forward current. The ratio of Ic to If is the current transfer ratio (CTR), which is 100 to 200 percent for the -3 grade at If = 1 mA. The high CTR allows the output to be driven into saturation with very low input current, making the device ideal for low-power microcontroller I\/O isolation. The 5300 Vrms isolation barrier provides reinforced insulation per IEC 60747-5-5 with 8 mm creepage\/clearance (option 6\/8), protecting users and equipment from high-voltage faults. The low coupling capacitance between input and output (0.5 pF typical) ensures high common-mode noise rejection. The -3X017T suffix denotes the SMD gull-wing package with 8 mm creepage (option 8) in tape-and-reel packaging.","pin_description":"<table><tr><th>Pin<\/th><th>Name<\/th><th>Description<\/th><\/tr><tr><td>1<\/td><td>Anode<\/td><td>LED anode; connect through current-limiting resistor to drive source<\/td><\/tr><tr><td>2<\/td><td>Cathode<\/td><td>LED cathode; connect to drive ground or sink<\/td><\/tr><tr><td>3<\/td><td>Emitter<\/td><td>Phototransistor emitter; connect to output ground<\/td><\/tr><tr><td>4<\/td><td>Collector<\/td><td>Phototransistor collector; connect through pull-up resistor to output supply<\/td><\/tr><\/table><p>Package: SMD-4 (Gull Wing). Creepage\/clearance: 7 mm standard, 8 mm with option 6\/8 for enhanced insulation. The 3X017T suffix indicates: 3 = CTR grade 100-200%, X = lead form option, 017 = option 8 (8 mm creepage), T = tape and reel.<\/p>","application_scenarios":"<ul><li><strong>Switch Mode Power Supplies<\/strong>: Feedback loop isolation in offline AC-DC and DC-DC converters with high CTR for low-power operation<\/li><li><strong>Smart Meters<\/strong>: Isolated communication between metering IC and display\/communication module<\/li><li><strong>Industrial Controls<\/strong>: PLC digital I\/O channel isolation with reinforced insulation rating<\/li><li><strong>AC Adapter Safety<\/strong>: Primary-to-secondary signal isolation meeting IEC 60950-1 and IEC 62368-1<\/li><li><strong>Telecom Line Isolation<\/strong>: Ring\/signal detection isolation in modem and SLIC circuits<\/li><\/ul>","alternative_models":"<table><tr><th>Model<\/th><th>Manufacturer<\/th><th>CTR<\/th><th>Viso<\/th><th>VCEO<\/th><th>Package<\/th><\/tr><tr><td>VO617A-3X017T<\/td><td>Vishay<\/td><td>50-80%<\/td><td>5300 Vrms<\/td><td>80 V<\/td><td>SMD-4<\/td><\/tr><tr><td>PC817X3J000F<\/td><td>Sharp<\/td><td>50-300%<\/td><td>5000 Vrms<\/td><td>35 V<\/td><td>DIP-4<\/td><\/tr><tr><td>CNY17-3<\/td><td>Vishay\/Renesas<\/td><td>100-200%<\/td><td>5300 Vrms<\/td><td>70 V<\/td><td>DIP-6<\/td><\/tr><tr><td>SFH619A-3<\/td><td>ams-OSRAM<\/td><td>100-200%<\/td><td>5300 Vrms<\/td><td>80 V<\/td><td>DIP-4<\/td><\/tr><tr><td>LTV-817A<\/td><td>Lite-On<\/td><td>80-160%<\/td><td>5000 Vrms<\/td><td>35 V<\/td><td>DIP-4<\/td><\/tr><\/table>\n<p>VO618A-3X017T is a phototransistor optocoupler from Vishay in SMD-4 with 100-200% CTR and 5.3kVrms isolation. The VO617A-3X017T provides lower 50-80% CTR for low-sensitivity applications. VO618A-4X017T offers 160-320% CTR grade. PC817C provides similar 200-400% CTR in DIP-4 through-hole at lower cost. For higher speed, TLP2710 from Toshiba offers 5Mbps logic output with 5kVrms isolation. SFH6156-X from ams-OSRAM provides similar phototransistor optocoupler in SMD-4.<\/p>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/8019","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/comments?post=8019"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/8019\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/media?parent=8019"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/categories?post=8019"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/tags?post=8019"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=8019"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}