EL817M(C)-V

Overview

The EL817M(C)-V is a single-channel transistor output optocoupler manufactured by Everlight Electronics. It integrates an infrared emitting diode with a phototransistor detector, providing electrical isolation between input and output circuits. The device features a 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 35 V, a maximum forward current of 60 mA, and a typical rise/fall time of 4 µs/3 µs. The component is RoHS compliant and housed in a 4-DIP package with 10.16 mm lead spacing.

Feature Summary

• High isolation voltage capability of 5000 Vrms between input and output channels
• Extended operating temperature range supporting environments up to +110°C
• Compact dual-in-line package design with specific lead spacing for mounting flexibility
• Compliance with international safety standards including UL, VDE, and RoHS directives

Applications

• Industrial control systems requiring signal isolation
• Power supply feedback loops for circuit protection
• Microcontroller interface circuits for level shifting
• Communication equipment isolating data lines

Procurement Notes

Verify the specific suffix configuration against the official Everlight datasheet to ensure correct lead form and packaging type. Confirm that the procurement source provides documentation for UL and VDE approvals as these are critical for compliance verification. Ensure the component matches the specified 4-DIP package dimensions and lead spacing requirements for the target application board.

Selection Notes

Select this component when high isolation voltage and wide temperature operation are required. The M-series designation indicates specific lead spacing suitable for through-hole mounting. Consider the current transfer ratio specifications and switching speed characteristics relative to the system's timing requirements. Ensure the input forward current limits are respected to maintain optimal performance and longevity.

Part Context

The EL817 series represents a family of general-purpose optocouplers widely used in industrial and consumer electronics. The EL817M variant specifically denotes a package with extended lead spacing (10.16 mm), distinguishing it from standard DIP-4 packages. This series is designed for applications requiring reliable galvanic isolation and compact footprint.

Replacement Considerations

Compatible substitutes include other EL817 series variants such as EL817C or EL817S, provided the package type and lead spacing match the design requirements. Verify that alternative components meet the same isolation voltage and current transfer ratio specifications.