EL817(M)-G

Overview

The EL817(M)-G is a single-channel transistor output optocoupler manufactured by Everlight Electronics. It features an infrared emitting diode optically coupled to an NPN phototransistor in a DIP-4 package with 0.4-inch lead spacing. The device provides high isolation voltage of 5000 Vrms and operates within a temperature range of -55°C to 110°C. Key electrical parameters include a collector-emitter breakdown voltage of 35V, maximum forward current of 60mA, and a typical current transfer ratio ranging from 300% to 600% at IF=5mA. It is RoHS compliant and UL recognized.

Feature Summary

• High isolation voltage between input and output for enhanced safety
• Compact dual-in-line package with extended lead spacing
• RoHS compliant construction without halogen or lead
• Recognized by major safety certification bodies including UL

Applications

• Power supply feedback circuits
• Industrial control signal isolation
• Appliance interface modules

Procurement Notes

Verify the specific suffix against the manufacturer's latest datasheet to confirm lead form and compliance status. Ensure the ordering code matches the required CTR bin and package variant. Cross-reference part numbers with official Everlight documentation to avoid substitution errors due to minor suffix differences.

Selection Notes

Select this component when high isolation voltage and standard DIP packaging are required. The M suffix indicates specific lead spacing suitable for through-hole mounting. Consider the current transfer ratio range for circuit gain requirements. Verify thermal dissipation limits for high-temperature environments.

Part Context

The EL817 series is a widely used family of linear optocouplers produced by Everlight. This specific model belongs to the standard transistor output category, designed for general-purpose isolation tasks. It serves as a common replacement for legacy components in various electronic designs requiring galvanic separation.

Replacement Considerations

Direct substitutes may include other EL817 variants with different CTR bins or lead forms. Verify pin compatibility and isolation ratings before substituting with generic equivalents.