ELM3054(TA)-V

Triac, SCR Output Optoisolators Overview

The ELM3054(TA)-V is a Triac driver optocoupler manufactured by Everlight Electronics Co Ltd. It features a random-phase triac output suitable for AC power control applications. The device utilizes surface mount technology with a SOP-4 package configuration. Key electrical parameters include a forward voltage of 1.2V and a maximum current LED trigger (Ift) of 3mA. The output stage supports an off-state voltage of 600V. The component contains one internal element and lacks a zero-crossing circuit, distinguishing it from zero-crossing variants within the same product family.

Triac, SCR Output Optoisolators Feature Summary

• Integrates an infrared emitting diode with a light-sensitive triac output for galvanic isolation.
• Designed specifically as a triac driver for direct interface with AC mains loads.
• Supports surface mount installation via a compact four-pin SOP package.

Triac, SCR Output Optoisolators Applications

• AC power switching circuits
• Solid state relay inputs
• Motor speed control systems

Triac, SCR Output Optoisolators Procurement Notes

Verify the specific suffix designation to confirm the random-phase characteristic, as zero-crossing variants exist within the series. Confirm the SOP-4 package type matches the target PCB footprint requirements. Ensure compliance with relevant safety standards for the intended isolation voltage application. Cross-reference the manufacturer part number against official distributor catalogs to avoid confusion with similar triac driver models.

Triac, SCR Output Optoisolators Selection Notes

Select this component when random-phase triggering is required rather than zero-crossing synchronization. The 600V off-state voltage rating determines the maximum blocking capability for the load. Consider the 3mA trigger current requirement for input drive circuit design. Evaluate thermal management needs based on the surface mount package's power dissipation characteristics in the final assembly.

Triac, SCR Output Optoisolators Part Context

This device belongs to the Everlight triac output optocoupler family. It shares functional similarities with other triac drivers but differs in phase detection logic. The TA-V suffix indicates specific packaging and processing variations compared to through-hole or standard tape-and-reel options. It serves as a critical interface component between low-voltage digital logic and high-voltage AC power stages.

Triac, SCR Output Optoisolators Replacement Considerations

Direct substitutes may include other random-phase triac driver optocouplers with compatible pinouts and voltage ratings. Verify that alternative components maintain the 600V off-state voltage and similar trigger current specifications. Check for equivalent package dimensions to ensure mechanical compatibility without PCB redesign.

Triac, SCR Output Optoisolators FAQ

Does the ELM3054(TA)-V include a zero-crossing detector?

No, the ELM3054(TA)-V is a random-phase triac driver and does not incorporate a zero-crossing circuit.

What is the maximum off-state voltage for this optocoupler?

The device supports an off-state voltage of 600V.