Phototriac Optocouplers with 800V Off-State Voltage and High Noise Isolation

Vishay Intertechnology has released two new series of optocouplers with phototriac output in compact DIP-6 and SMD-6 packages. They offer a high off-state voltage of 800V and have static dV/dt of 1000V/μs, the VOT8026A and VOT8123A deliver high robustness and noise isolation for home appliances and industrial equipment.

Applications for the optocouplers include power TRIAC drivers in solid-state relays; three-phase air conditioners, boilers, and thermostats; industrial motor control and power line switching; as well as motor, lamp, and valve control in household appliances.

Isolate low voltage logic from 120Vac, 240Vac, and 380Vac lines can control resistive, inductive, or capacitive loads, including motors, solenoids, high current thyristors, or TRIACs and relays. 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 a random-phase TRIAC (VOT8123A) to enable phase-independent switching.

A high off-state voltage enhances safety margins in one-phase applications, while still maintaining enough voltage headroom for three-phase applications. High withstand isolation voltage provides additional safety. Low trigger currents down to 5mA facilitate an easy interface with digital logic

Product Benefits
  • Compact DIP-6 and SMD-6 packages
  • High off-state voltage of 800V
  • Static dV/dt of 1000V/μs
  • Withstand isolation voltage of at least 5000VRMS
  • Low trigger currents down to 5mA
  • High off-state voltage
  • Isolate low voltage logic from 120Vac, 240 Vac, and 380Vac lines to control resistive, inductive, or capacitive loads
  • Low trigger currents down to 5mA
  • High withstand isolation voltage of at least 5000VRMS

Samples and production quantities of the VOT8026A and VOT8123A are available now, with lead times of six weeks.

Vishay Intertechnology Inc.
To Top

Join 50,000+ Power Pros


  • Keep pace with relentless innovation
  • Influence the conversation
  • Take your insights to another level

You have Successfully Subscribed!