EL3042-V

Overview

The EL3042-V is a zero-crossing triac output optocoupler manufactured by Everlight Electronics. It integrates an AlGaAs infrared emitting diode with a photo-triac, providing electrical isolation for AC load control. Key parameters include a peak off-state voltage of 400 V and an isolation voltage of 5000 Vrms. The device supports a maximum DC forward current of 60 mA and features a minimum static dV/dt of 1 kV/µs. It operates within a temperature range of -55°C to +100°C.

Feature Summary

• Integrates a zero-voltage crossing circuit to minimize electromagnetic interference during switching.
• Provides high electrical isolation between input and output circuits.
• Designed for reliable triggering of triacs and SCRs in AC power applications.

Applications

• Solid-state relays
• Motor speed controllers
• Lighting dimmers

Procurement Notes

Verify the specific suffix against official datasheets to confirm package type and compliance status. Ensure the component matches the required isolation voltage and trigger current specifications for the target application. Confirm RoHS and UL recognition details directly from the manufacturer's documentation before procurement.

Selection Notes

Select this component for applications requiring precise timing control of AC loads to reduce noise. Consider the 400 V off-state voltage limit when designing for higher voltage lines. Evaluate the thermal management requirements given the operating temperature range and power dissipation characteristics specified in the technical data.

Part Context

This part belongs to the EL304X series of zero-crossing triac driver photocouplers. The series offers various peak breakdown voltages, with the EL304X specifically rated for 400 V. These devices are commonly used in industrial and consumer electronics for safe isolation and control of mains-powered equipment.

Replacement Considerations

Check for direct substitutes within the EL304X family or other manufacturers' zero-crossing triac optocouplers. Verify pinout compatibility and ensure equivalent isolation voltage and trigger current ratings are met.

FAQ

What is the purpose of the zero-crossing circuit in the EL3042-V?

The zero-crossing circuit ensures that the internal triac turns on only when the AC line voltage is near zero, reducing electromagnetic interference and inrush current.

What is the maximum isolation voltage of the EL3042-V?

The EL3042-V provides an isolation voltage of 5000 Vrms between the input LED and the output triac.