PS2566-1-A

Overview

The PS2566-1-A is a single-channel transistor output optocoupler manufactured by CEL. It features an NPN silicon Darlington connected phototransistor coupled with a GaAs light emitting diode. The device provides high isolation voltage of 5000 Vrms and supports AC input response. Key electrical parameters include a maximum collector-emitter voltage of 40 V, a typical current transfer ratio (CTR) of 2000%, and a maximum forward current of 80 mA. It operates within a temperature range of -55°C to +100°C.

Feature Summary

• High isolation voltage capability for robust circuit protection
• AC input response functionality for direct line sensing
• High current transfer ratio for efficient signal transmission

Applications

• Industrial control systems requiring galvanic isolation
• Solid-state relay driver circuits
• Microprocessor interface circuits for noise immunity

Procurement Notes

Verify the specific suffix 'A' against the manufacturer's latest datasheet to confirm pinout and compliance status. Check for end-of-life or obsolescence notices as this component family may have limited availability. Ensure the required isolation voltage rating meets the safety standards of the target application environment before finalizing procurement.

Selection Notes

Select this component when high current gain is required due to the Darlington output structure. The AC input feature makes it suitable for applications where the input signal polarity may alternate. Verify that the 40 V collector-emitter voltage rating is sufficient for the load switching requirements. Consider the package type compatibility during PCB layout design.

Part Context

This part belongs to the NEPOC series of photocouplers from CEL. It is designed for general-purpose isolation applications requiring high CTR and AC input compatibility. The device is typically housed in a standard DIP package, facilitating through-hole mounting in various electronic assemblies.

Replacement Considerations

Cross-reference with other PS2566 variants such as PS2566L-1-A for surface mount options. Verify functional equivalence regarding isolation voltage and CTR when substituting with components from other manufacturers.