EL4502

Overview

The EL4502 is a high-speed optocoupler manufactured by Everlight Electronics, housed in an 8-pin PDIP package. It features a single channel with a phototransistor output type. The device supports data rates up to 1 Mb/s and provides an insulation voltage of 5000 Vrms. Key electrical parameters include a forward current of 16 mA, a forward voltage of 1.45 V, and a reverse voltage of 5 V. The current transfer ratio ranges from 19% to 50%, with a power dissipation of 100 mW. Operating temperatures span from -55°C to +100°C.

Feature Summary

• High-speed signal transmission capability supporting 1 Mb/s data rates
• Strong electrical isolation with 5000 Vrms insulation voltage rating
• Wide operating temperature range suitable for demanding environments
• Phototransistor output configuration for reliable switching

Applications

• Industrial communication systems requiring galvanic isolation
• Microprocessor input/output interface circuits
• Signal transmission in noisy electrical environments
• Power supply feedback loops for control applications

Procurement Notes

Verify the specific ordering suffix if required, as variations may exist. Confirm package integrity upon receipt, ensuring the PDIP-8 housing is undamaged. Check datasheet revisions for any updates to absolute maximum ratings or thermal characteristics. Ensure compatibility with existing PCB footprints and soldering profiles. Validate supplier authenticity through official Everlight channels or authorized distributors to guarantee component quality and traceability.

Selection Notes

Select this component when high-speed digital isolation is necessary within a compact DIP footprint. The 1 Mb/s rate suits moderate-speed serial communications. Consider the 5000 Vrms isolation for safety-critical interfaces. Evaluate the CTR range against drive requirements. Compare thermal performance if ambient temperatures approach the upper limit. Ensure the phototransistor output aligns with downstream logic levels.

Part Context

This part belongs to Everlight's high-speed optocoupler family, designed for robust signal transfer across isolated boundaries. It complements other devices in the series offering similar speed but different packaging or output types. The EL4502 specifically targets applications needing reliable isolation in space-constrained designs using standard through-hole technology.

Replacement Considerations

Cross-reference with other 8-pin DIP high-speed optocouplers featuring comparable 1 Mb/s speeds and 5000 Vrms isolation. Verify pinout compatibility before substitution. Ensure equivalent CTR and saturation voltage characteristics match circuit requirements. Check for any functional differences in output stage architecture.