EL827

Overview

The EL827 is a dual-channel transistor output optocoupler manufactured by Everlight Electronics. It features an 8-pin DIP package and provides high isolation voltage of 5000 Vrms between input and output circuits. The device utilizes an NPN phototransistor output with a minimum collector-emitter breakdown voltage of 80 V. Key electrical parameters include a forward current rating of 60 mA, a forward voltage of 1.4 V, and a current transfer ratio ranging from 50% to 600%. It operates within a temperature range of -55°C to 110°C.

Feature Summary

• Dual-channel configuration for independent signal isolation
• High insulation voltage capability between input and output
• NPN phototransistor output structure
• RoHS compliant construction

Applications

• General purpose digital signal isolation
• Microprocessor system interface circuits
• Solid-state relay driver applications
• Switching power supply feedback loops

Procurement Notes

Verify the specific suffix (e.g., TA, M) against the datasheet to confirm packaging type and lead form. Ensure the component meets required safety certifications such as UL or VDE for the target application. Confirm availability status as distribution channels may vary by region. Check for RoHS compliance documentation if environmental regulations apply.

Selection Notes

Select this component when dual-channel isolation is required in a compact 8-pin DIP format. Consider the 80 V collector-emitter voltage rating for load compatibility. Evaluate the current transfer ratio spread to ensure sufficient noise margin in the specific circuit design. Verify thermal management requirements given the operating temperature range limits.

Part Context

The EL827 belongs to the EL827 series of transistor output optocouplers produced by Everlight Electronics. It serves as a dual-channel variant within the company's general-purpose photocoupler lineup. The series is designed for cost-effective isolation solutions in industrial and consumer electronics. It shares similar functional characteristics with other single-channel models but offers two isolated paths in one package.

Replacement Considerations

Cross-reference with EL817 variants if single-channel isolation suffices. Verify pinout compatibility before substituting with other dual-channel optocouplers. Ensure replacement parts meet the same 5000 Vrms isolation and 80 V output voltage specifications.