Vishay IL420 and IL4208 Optocouplers feature an optically coupled GaAs IR LED and a photosensitive thyristor system with integrated noise suppression. The IL420 and IL4208 optocouplers require a low trigger current of 1mA and support load voltages up to 800V. These optocouplers provide reliable performance with a low trigger current of 1mA and a maximum current rating of 300mA. Typical applications include consumer appliances, industrial controls, office equipment, and solid-state relays.
Vishay IL420 and IL4208 Optocouplers
Features
- Capable of handling load voltages up to 800V
- Features a dV/dt ratio greater than 10kV/μs
- Includes built-in noise suppression and non-zero crossing functionality
- Provides consistent operation with a low trigger current
- Requires a low trigger current of 1mA
- Small 6-pin DIP package
- Utilizes a GaAs IR LED and a photosensitive thyristor system
Applications
- Consumer appliances
- Industrial controls
- Office equipment
- Solid state relays
Video
This TTI Tech Specs video for Vishay IL420 and IL4208 Optocouplers explains these optocouplers have a non-zero crossing phototriac output and isolate low-voltage logic from AC mains voltage to control loads such as motors, solenoids, high current thyristors, TRIACs, and relays.
See video transcript below
Video Transcript
Electronics don’t have to worry about social distancing, but some circuits do need to stay isolated from each other and the user. Vishay’s IL420 and IL4208 optocouplers have a non-zero crossing phototriac output and isolate low-voltage logic from AC mains voltage to control loads such as motors, solenoids, high-current thyristors, TRIACs, and relays.
Both have multiple safety agency approvals, with the IL420 rated to block 600V while the IL4208 is rated to block 800 volts, controlling offline voltages up to 380VAC. The optocouplers are designed to trigger with an input current less than 2mA, allowing most microcontrollers to directly drive the input. They employ a proprietary clamp circuit that provides a high static dV/dt. The IL420 and IL4208 are housed in a compact 6-pin DIP or SMD package, with various lead spacing and board clearance options.