High CTI Optocoupler


  • More than 600 V CTI,  Material Group I
  • 15 mm Stretched SO8 Package
  • TTL Compatible
  • Open-Collector Output

The ACNT-H511C is a single-channel open collector optocoupler device in 15-mm stretched SO8 package. The device is equipped with an insulating layer between the light-emitting diode and an integrated photon detector to provide electrical insulation between the input and output. Having separate connections for the photodiode bias and output transistor collector reduces the base-collector capacitance and enhances the data speed up to a hundred times compared to a conventional photo-transistor coupler.


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  • High CTI, open collector output optocoupler in 15 mm stretched SO-8 package
  • Guaranteed AC and DC performance over wide temperature: -40 to +105 °C
  • Wide operating Vcc range: 4.5 to 24 V
  • Internal clearance (DTI): 0.5 mm
  • 40 kV/μs typical common-mode rejection (CMR) at VCM = 1500 V
  • Safety and regulatory approvals:
    • UL 1577 Recognized: 7500 VRMS for 1 minute
    • CSA approved
    • IEC/EN 60747-5-5 approved for reinforced insulation:
      • VIORM = 2262 VPEAK
      • VIOTM = 12000 VPEAK
  • High-voltage power systems, for example, 690V AC drives
  • Renewable energy inverters
  • Feedback elements in switching power supplies
  • Digital isolation for A/D, D/A conversion digital field
  • Communications interface
  • MCU interface
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