EL4502M

Overview

The EL4502M is a high-speed optocoupler manufactured by Everlight Electronics Co Ltd. It features a single channel with a phototransistor output and an 8-pin DIP package. The device supports data rates up to 1 Mb/s and provides an isolation 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
• High isolation voltage rating of 5000 Vrms for circuit protection
• Phototransistor output configuration for digital signal coupling

Applications

• Digital communication interfaces requiring galvanic isolation
• Microprocessor system input/output isolation
• Signal transmission in noisy industrial environments

Procurement Notes

Verify the specific suffix (e.g., M, TA-V) against the manufacturer datasheet to confirm pinout compatibility and packaging variations. Ensure the selected variant meets the required isolation voltage and speed specifications for the target application. Cross-reference the RoHS compliance status with current regulatory requirements before finalizing procurement decisions.

Selection Notes

Select this component when high-speed digital isolation is required within a standard DIP-8 footprint. Consider the 1 Mb/s data rate limit and the phototransistor output characteristics for interface matching. Evaluate the thermal performance within the specified operating temperature range and ensure the forward current requirements align with the driving circuit capabilities.

Part Context

The EL4502M belongs to Everlight's high-speed optocoupler series, designed for applications demanding fast signal transfer between isolated circuits. It serves as a bridge for digital signals where electrical noise immunity and safety isolation are critical. The device integrates an infrared emitting diode and a phototransistor detector within a compact package.

Replacement Considerations

Check for direct substitutes such as the EL4502 or EL4502M-V variants, ensuring identical pin configurations and electrical ratings. Verify that any replacement maintains the 1 Mb/s speed and 5000 Vrms isolation requirements.