EL3021-V

Overview

The EL3021-V is a single-channel, random-phase triac driver optocoupler manufactured by Everlight Electronics. It features a gallium arsenide infrared LED coupled to a triac output in a six-pin DIP package. Key electrical parameters include a maximum peak blocking voltage (VDRM) of 400V and an RMS on-state current (IT(RMS)) of 100mA. The device provides high isolation with a breakdown voltage of 5000Vrms and operates within a temperature range of -55°C to +100°C.

Feature Summary

• Random phase triggering capability for precise AC power control applications
• High voltage isolation rating of 5000Vrms for safety compliance
• Integrated triac output designed for direct gate drive of main triacs

Applications

• Solid state relays for industrial switching
• AC motor speed control circuits
• Lighting dimmer modules

Procurement Notes

Verify the specific suffix variant against the official datasheet to ensure compatibility with required packaging and thermal specifications. Confirm that the component meets all necessary regional regulatory standards for the intended deployment environment before finalizing procurement orders.

Selection Notes

Select this component when random phase firing is required rather than zero-crossing detection. Ensure the circuit design accommodates the specified 400V blocking voltage and 100mA RMS current limits while maintaining adequate creepage distances for the 5000V isolation requirement.

Part Context

This part belongs to the EL3021 series of optocouplers from Everlight Electronics. It is specifically engineered as a triac driver, distinguishing it from standard logic output isolators. The series is widely utilized in power electronics where galvanic isolation between low-voltage control logic and high-voltage AC loads is essential.

Replacement Considerations

Consult official cross-reference lists for verified substitutes. Generic replacements may differ in dV/dt ratings or holding current characteristics.