EL3051S1(TA)-V

Overview

The EL3051S1(TA)-V is a random-phase TRIAC driver optoisolator manufactured by Everlight Electronics. It features a single channel with an internal LED coupled to a TRIAC output, housed in a 6-SMD Gull Wing package. The device provides high isolation voltage of 5000Vrms between input and output circuits. It is designed for applications requiring phase control of AC loads without zero-crossing detection.

Feature Summary

• Integrates an infrared emitting diode with a sensitive TRIAC output gate for efficient triggering
• Provides robust electrical isolation suitable for high-voltage switching environments
• Supports surface mount mounting for automated assembly processes

Applications

• Solid state relays for AC load switching
• Motor speed control circuits
• Light dimmer applications

Procurement Notes

Verify the specific suffix TA against the manufacturer datasheet to confirm the 6-SMD Gull Wing package configuration. Ensure that the required isolation voltage and current transfer ratio meet the system design specifications before finalizing the component selection for production.

Selection Notes

Select this component when a non-zero-crossing TRIAC driver is required for phase-angle control applications. Consider the 5000Vrms isolation rating for safety compliance in mains-connected designs. Verify that the SMD footprint matches the PCB layout requirements compared to through-hole alternatives.

Part Context

This part belongs to the EL305X series of TRIAC driver optocouplers from Everlight. It is distinct from zero-crossing variants like the EL3041 series. The TA suffix typically denotes the specific surface mount package type within the product family.

Replacement Considerations

Direct replacements must match the 6-SMD Gull Wing package and random-phase TRIAC output characteristics. Verify pinout compatibility and isolation voltage ratings when substituting with other manufacturers' TRIAC drivers.