PS2502-2

Overview

The CEL PS2502-2 is a high isolation voltage Darlington transistor type optocoupler. It contains a Gallium Arsenide (GaAs) light emitting diode and an NPN silicon Darlington phototransistor. The device features a two-channel configuration with a typical current transfer ratio of 2000%. It provides an isolation voltage of 5000 Vrms. The component is available in 8-pin DIP or L SMT packages.

Feature Summary

• High isolation voltage capability for robust signal transmission
• Darlington output configuration for high current gain
• GaAs LED input for efficient optical coupling

Applications

• Industrial control systems requiring galvanic isolation
• Power supply feedback loops
• Signal isolation between microprocessors and peripheral devices

Procurement Notes

Verify the specific suffix code to confirm package type and compliance status, as variations exist within the PS2502 family. Confirm availability status directly with suppliers, as some listings indicate discontinuation. Ensure the selected variant matches the required isolation voltage and pinout configuration for your circuit design.

Selection Notes

Select this component when high current transfer ratio and strong isolation are required. The Darlington output offers higher sensitivity compared to standard phototransistor outputs. Consider the physical package constraints and verify that the 5000 Vrms isolation rating meets the safety standards of the target application environment.

Part Context

The PS2502 series includes variants such as PS2502-1, -4, and PS2502L models. These share similar internal structures but differ in channel count and packaging. The PS2502-2 specifically denotes the two-channel version within this high-voltage isolator family manufactured by CEL.

Replacement Considerations

Cross-reference with other high-isolation Darlington optocouplers from manufacturers like NEC or Vishay. Verify equivalent isolation voltages and current transfer ratios before substitution.