PS2502L-1-A

Overview

The CEL PS2502L-1-A is a single-channel transistor output optocoupler featuring an NPN photodarlington detector and a GaAs infrared LED. It provides high isolation voltage of 5000 Vrms with a minimum current transfer ratio of 200%. The device supports a maximum forward current of 80 mA and can handle a collector current up to 200 mA. Key electrical parameters include a maximum collector-emitter voltage of 40 V, a saturation voltage of 1 V, and rise/fall times of 100 µs. It operates within a temperature range of -55°C to +100°C.

Feature Summary

• High isolation voltage capability for safe signal transmission across potential barriers
• Darlington output configuration enables high current gain and sensitivity
• GaAs LED input ensures reliable optical coupling efficiency

Applications

• Industrial control systems requiring galvanic isolation
• Power supply feedback loops
• Signal interface between microcontrollers and high-voltage circuits

Procurement Notes

Verify the specific suffix 'A' against official datasheets to confirm package type and compliance status. Confirm availability as distribution channels may list this part as discontinued or limited stock. Ensure the manufacturer designation aligns with current Renesas Electronics ownership if sourcing from legacy CEL inventory.

Selection Notes

Select this component when high current drive capability is required at the output stage compared to standard phototransistor isolators. The Darlington structure offers superior CTR but slower switching speeds than single-transistor variants. Verify that the 40 V collector-emitter voltage rating meets the load requirements of the target circuit application.

Part Context

This part belongs to the PS2502L series of high-isolation optocouplers manufactured by CEL, now part of Renesas Electronics. The series includes multiple channel configurations such as dual and quad versions. The PS2502L-1-A specifically denotes the single-channel variant in a surface-mount package format designed for automated assembly processes.

Replacement Considerations

Direct substitutes include other single-channel Darlington optocouplers with similar 5000 Vrms isolation and 200% CTR ratings. Check pinout compatibility before substitution. Note that some equivalents may offer faster switching speeds or different packaging options.