EL3043-V

Overview

The EL3043-V is a Triac and SCR output optocoupler manufactured by Everlight Electronics Co., Ltd. It features a single channel with an integrated zero-crossing circuit for precise switching control. The device utilizes a PDIP-6 through-hole package, ensuring compatibility with standard PCB layouts. Key electrical specifications include a maximum forward current (If) of 60 mA and a forward voltage (Vf) of 1.5 V. The unit provides robust isolation with an insulation voltage of 5000 Vrms and supports a peak off-state voltage (Vdrm) of 400 V. It operates within a temperature range of -55°C to +100°C and has a power dissipation rating of 330 mW.

Feature Summary

• Integrated zero-crossing detection circuitry for reduced electromagnetic interference during switching events
• High isolation capability rated at 5000 Vrms for safe separation of control and load circuits
• Single-channel design optimized for driving triacs and SCRs in AC power applications

Applications

• Solid-state relays requiring zero-crossing switching
• AC motor speed control systems
• Lighting dimmer circuits

Procurement Notes

Verify the specific suffix '-V' against the manufacturer's latest datasheet to confirm pinout and packaging details. Ensure the component meets RoHS compliance requirements if applicable to your assembly process. Cross-reference the Mouser part number 638-el3043 for availability status, as distribution may vary by region. Confirm that the DIP-6 package aligns with your PCB footprint specifications before finalizing orders.

Selection Notes

Select this component when zero-crossing functionality is required to minimize noise and inrush currents in AC loads. The 5000 Vrms isolation rating makes it suitable for high-voltage industrial environments. Consider the 60 mA forward current limit when designing the input driver circuit. The wide operating temperature range supports deployment in harsh conditions where thermal stability is critical for reliable triac triggering.

Part Context

The EL3043-V belongs to Everlight's family of Triac and SCR output optocouplers. It is designed specifically for applications requiring galvanic isolation between low-voltage control logic and high-voltage AC power stages. The inclusion of a zero-crossing circuit distinguishes it from standard triac drivers, offering improved performance in sensitive electronic equipment. This series is widely used in consumer electronics and industrial automation for efficient power switching.

Replacement Considerations

Check for direct substitutes such as the ELM3043(TA) for surface-mount requirements, noting the package difference. Verify functional equivalence regarding zero-crossing timing and isolation voltage when considering alternative brands.