OCP-PCT218/E

Overview

The OCP-PCT218/E is a dual-channel transistor output optoisolator manufactured by Lumex Opto/Components Inc. It features an isolation voltage of 5000Vrms and operates within a temperature range of -30°C to 100°C. The device provides a minimum current transfer ratio of 60% at 2mA input, with a maximum of 600%. Key electrical parameters include a forward voltage of 1.2V, maximum collector-emitter voltage of 60V, and per-channel output current of 50mA. Switching characteristics include typical rise and fall times of 5µs and 4µs respectively, with a maximum Vce saturation of 300mV.

Feature Summary

• Dual-channel configuration for independent signal isolation
• High isolation voltage rating of 5000Vrms
• Wide operating temperature range suitable for industrial environments
• Fast switching performance with microsecond-level rise and fall times

Applications

• Industrial control systems requiring galvanic isolation
• Signal interface circuits between different voltage domains
• Power supply feedback loops for safety isolation
• Microcontroller input/output protection circuits

Procurement Notes

Verify the package type upon ordering, as datasheets may list both tube (OCP-PCT218/E) and tape-and-reel (OCP-PCT218/E-TR) variants. Confirm that the specific suffix matches the required packaging format for automated assembly or manual placement. Ensure the component meets RoHS3 compliance requirements if mandated by the project specifications. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when dual-channel isolation is required within a single package footprint. Consider the 5000Vrms isolation rating for high-voltage separation needs. Evaluate the 60% to 600% current transfer ratio range against the driving circuit capabilities. Verify that the 50mA output current per channel suffices for the load requirements. Check compatibility with the system's operating temperature range extending up to 100°C.

Part Context

This component belongs to Lumex's family of transistor output optoisolators designed for general-purpose isolation applications. It utilizes a standard eight-pin DIP or SMD configuration depending on the suffix. The series is engineered to provide reliable signal transmission across isolated barriers while maintaining compact board space. It serves as a critical interface element in mixed-signal circuits where noise immunity and voltage level shifting are essential.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify pinout compatibility and electrical parameter equivalence before considering alternative manufacturers. Ensure any replacement maintains the 5000Vrms isolation rating and similar switching speeds.