Working With Optically-Isolated Relays
All Relays used to perform switching duties through electromechanical means. Today, however, engineers can also opt for Solid-State Relays that use Semiconductors to switch their output circuits. The choice between traditional Electromechanical and the Solid-State Relay varieties often comes down to two factors: reliability and performance.
With no moving parts, Solid-State Relays avoid all the obvious mechanical failure modes associated with traditional Relays. They also tend to offer desirable electrical characteristics and design advantages including:
- Low Power Consumption
- Low Leakage Current
- Stable On-Resistance Over Lifetime
- High Reliability With Extremely Long Life
- Small Size
- Fast Switching Speeds
- High Vibration And Shock Resistance
- No Contact Bounce Or Switching Noise
Keep in mind that Solid-State Relays are not created equal when it comes to these performance advantages. Optically-Isolated Relays, in particular, can outshine other solid-state devices that use electrical or magnetic operating principles.
To learn more about the operating principles of Optically-Isolated Relays, how to apply them in different applications, and how to maximize their long life cycles, download Panasonic's White Paper.