EL3011

Overview

The EL3011 is a single-element Triac Output Optocoupler manufactured by Everlight Electronics Co Ltd. It features a GaAs infrared emitting diode optically coupled to a monolithic silicon random phase photo Triac. The device provides high isolation voltage of 5000 Vrms between input and output circuits. It operates within a temperature range of -55 °C to +100 °C. Key electrical parameters include a maximum forward current of 60 mA, a peak breakdown voltage of 250 V, and a minimum off-state peak voltage of 250 V. The component is RoHS compliant and available in surface mount or DIP packages.

Feature Summary

• High isolation voltage capability of 5000 Vrms between input and output sections
• Random-phase Triac output designed for interfacing with power triacs
• RoHS compliant construction without lead content
• Certified by UL, VDE, SEMKO, NEMKO, and CSA safety standards

Applications

• Solenoid and valve controls
• Lamp ballasts
• Resistive load control for 115 to 240 VAC operations
• Inductive load control for 115 to 240 VAC operations

Procurement Notes

Verify the specific package variant required, as the EL3011 designation covers multiple physical forms including standard DIP-6 and surface mount configurations like the EL3011S1-V. Confirm that the selected part matches the necessary safety approvals (UL, VDE) for the target region. Ensure the random-phase output characteristic aligns with the application's requirement for non-zero-crossing switching behavior. Check datasheet revisions for any updates to mechanical dimensions or thermal ratings before finalizing procurement.

Selection Notes

Select this component when high-voltage isolation is critical for separating low-voltage control logic from AC power lines. The random-phase output makes it suitable for applications where precise zero-crossing timing is not required, such as simple on/off control or phase-angle firing. Consider the 250 V peak breakdown voltage limit when designing for higher voltage AC systems. Verify that the 60 mA maximum forward current rating accommodates the driving circuit's output capabilities without exceeding safe operating limits.

Part Context

The EL3011 belongs to the EL301X series of random-phase Triac driver photocouplers from Everlight. This series includes variants like the EL3012 and EL3015, which differ primarily in their peak breakdown voltage ratings. These devices are engineered for compact integration into AC power control circuits. The family shares common architectural features, utilizing a GaAs LED coupled to a silicon Triac, ensuring reliable signal transmission across the isolation barrier while maintaining compliance with international safety regulations.

Replacement Considerations

Direct substitutes within the same manufacturer line include the EL3012 and EL3015, provided the application can accommodate their respective peak breakdown voltages. Cross-manufacturer replacements must match the 5000 Vrms isolation rating, random-phase output type, and PDIP-6 or SMD-6 package footprint. Verify that alternative parts meet the same UL and VDE certification requirements to ensure regulatory compliance in the final assembly.