VOT8026A/VOT8123A Series Optocouplers

By Vishay Semiconductor / Opto Division 197

VOT8026A/VOT8123A Series Optocouplers

Vishay’s VOT8026A and VOT8123A series optocouplers offer high off-state voltage of 800 V and static dv/dt of 1,000 V/µs in compact DIP-6 and SMD-6 packages. These optocouplers deliver high robustness and noise isolation for home appliances and industrial equipment. They isolate low voltage logic from 120 VAC, 240 VAC, and 380 VAC lines to control resistive, inductive, or capacitive loads, including motors, solenoids, high current thyristors, or TRIACs and relays. Reducing design costs and saving board space, the devices consist of a GaAs infrared LED optically coupled to either a zero-crossing TRIAC (VOT8026A) for EMI reduction without the need for external snubber networks or random-phase TRIAC (VOT8123A) to enable phase-independent switching. The high off-state voltage enhances safety margins in one-phase applications, while still maintaining enough voltage headroom for three-phase applications.

  • Compact DIP-6 and SMD-6 packages
  • High off-state voltage of 800 V
  • Static dv/dt of 1,000 V/µs
  • Low trigger currents facilitate an easy interface with digital logic
  • Low trigger currents down to 5 mA
  • Withstanding isolation voltage of at least 5,000 VRMS
  • High withstanding isolation voltage provides additional safety
  • RoHS compliant 
  • Power TRIAC drivers in solid-state relays
  • Three-phase air conditioners, boilers, and thermostats
  • Industrial motor controls and power line switching
  • Motor, lamp, and valve control in household applications