PS2535-1-A

Overview

The PS2535-1-A is a single-channel transistor output optocoupler manufactured by CEL. It features an NPN silicon Darlington phototransistor output paired with a GaAs infrared LED input. The device provides high isolation voltage of 5000 Vrms and supports a wide operating temperature range from -55°C to +100°C. Key electrical parameters include a minimum current transfer ratio of 400% at 1mA forward current, a maximum collector-emitter voltage of 350V, and a maximum collector current of 120mA. The unit is housed in a DIP-4 package suitable for through-hole mounting.

Feature Summary

• High current gain capability via NPN silicon Darlington phototransistor output stage
• Robust electrical isolation rated at 5000 Vrms between input and output circuits
• Wide operational temperature range extending from -55°C to +100°C for harsh environments

Applications

• Industrial control systems requiring galvanic isolation
• Power supply feedback loops for signal transmission
• Solid-state relay driver circuits

Procurement Notes

Verify the manufacturer designation carefully, as this component is listed under both CEL and Renesas Electronics in various databases due to historical corporate transitions. Confirm the specific suffix '-A' corresponds to the tube packaging variant if required. Ensure the datasheet matches the exact part number to avoid confusion with the PS2535L-1 series, which may have different performance characteristics or pinout configurations despite similar naming conventions.

Selection Notes

Select this component when high current drive capability is necessary without external amplification, leveraging the Darlington configuration's high CTR. Consider the 350V collector-emitter voltage rating for medium-voltage switching applications. Verify that the through-hole DIP-4 package aligns with the PCB layout constraints. Compare the 400% minimum CTR against application requirements to ensure sufficient signal transfer efficiency under varying temperature conditions.

Part Context

This component belongs to the PS2535 family of optically coupled isolators. The family typically includes variants like PS2535-1 and PS2535L-1, which share the core architecture of a GaAs LED coupled to an NPN Darlington phototransistor. These devices are designed for general-purpose isolation tasks where high reliability and standard DIP packaging are preferred over surface-mount alternatives.

Replacement Considerations

Direct substitutes include the PS2535-1 and PS2535L-1 from Renesas Electronics, which share identical functional descriptions and pinouts. Verify compatibility with the PS2535-1-F3-A variant if reel packaging is acceptable instead of tubes.