TIL3021

Triac, SCR Output Optoisolators Overview

The TIL3021 is a TRIAC output optocoupler manufactured by Texas Instruments. It integrates a Gallium-Arsenide infrared LED source with an optically coupled silicon TRIAC driver. The device provides electrical isolation between control circuits and high-voltage AC loads. Key specifications include a peak repetitive off-state voltage of 400V for the TRIAC output. The input forward current rating supports standard logic interface driving. The component is designed for reliable switching in industrial and consumer applications requiring galvanic isolation.

Triac, SCR Output Optoisolators Feature Summary

• Integrates a Gallium-Arsenide infrared LED with a silicon TRIAC driver for optical coupling
• Provides high-voltage isolation suitable for controlling AC power loads
• Features a peak repetitive off-state voltage rating of 400V on the output side

Triac, SCR Output Optoisolators Applications

• Solid-state relay interfaces
• AC motor control circuits
• Industrial process control isolation
• Consumer appliance switching

Triac, SCR Output Optoisolators Procurement Notes

Verify the manufacturer marking matches Texas Instruments to ensure authenticity. Confirm the package type and pin configuration align with the design schematic. Check for any specific ordering suffixes that may indicate temperature range or tape-and-reel packaging variations. Ensure the component meets the required isolation voltage standards for the target application safety regulations.

Triac, SCR Output Optoisolators Selection Notes

Select this component when a TRIAC output is required for AC load switching rather than a simple phototransistor. Consider the 400V off-state voltage rating against the peak line voltage of the application. Evaluate the input forward current requirements to ensure compatibility with the driving logic level. Verify thermal management needs if the device operates near its maximum ratings continuously.

Triac, SCR Output Optoisolators Part Context

The TIL3021 belongs to the TIL302 series of optocouplers from Texas Instruments. This series includes variants like the TIL3020 and TIL3022, which share similar architectural features but may differ in specific electrical parameters or package options. These devices are part of TI's broader portfolio of isolation components used for signal transmission across isolated boundaries.

Triac, SCR Output Optoisolators Replacement Considerations

Direct substitutes should be verified against the official datasheet cross-reference list. Equivalent parts must match the TRIAC output topology and 400V voltage rating. Pinout compatibility is critical for direct replacement without PCB redesign. Consult Texas Instruments documentation for approved alternative part numbers.