PS2502-1G

Overview

The PS2502-1G is a single-channel optocoupler manufactured by Isocom Components, belonging to the PS2502 series. It features an infrared LED input coupled to a Darlington transistor output for high gain switching. The device utilizes a DIP-4 through-hole package configuration. Key electrical parameters include a maximum isolation voltage of 5000 Vrms and a typical current transfer ratio of 250%. The component supports a maximum forward current of 80 mA with a forward voltage of approximately 1.4 V. It operates within a temperature range suitable for industrial applications.

Feature Summary

• High current transfer ratio provided by the internal Darlington phototransistor structure
• Robust electrical isolation capability between input and output circuits
• Standardized dual-in-line package design for reliable through-hole mounting

Applications

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

Procurement Notes

Verify the manufacturer designation on the datasheet, as Renesas Electronics also lists this part number in their portfolio. Confirm that the specific suffix matches the required pinout and insulation standards. Ensure the source documentation explicitly identifies Isocom Components 2004 LTD as the supplier for this specific batch or variant to avoid cross-manufacturer discrepancies.

Selection Notes

Select this component when high gain switching is required without external amplification. The Darlington output offers superior sensitivity compared to standard phototransistors. Consider the slower switching speed inherent to Darlington structures when designing for high-frequency applications. Verify thermal management requirements based on the specified forward current limits.

Part Context

This part belongs to the PS2502 family of optocouplers, which are designed for general-purpose isolation tasks. The series typically includes variants with different channel counts and package styles. These components are widely used in environments where galvanic isolation is critical for safety and noise immunity. The specific model represents a single-channel configuration optimized for cost-effective isolation solutions.

Replacement Considerations

Cross-reference with TLP521-1 or H11AA1 equivalents if sourcing from alternative manufacturers. Verify that the replacement maintains the same 5000 Vrms isolation rating and compatible DIP-4 footprint. Check for differences in current transfer ratio tolerances to ensure circuit performance remains within specifications.