PS2861-1-F3-A

Overview

The PS2861-1-F3-A is a single-channel optically coupled isolator manufactured by CEL. It integrates a Gallium Arsenide (GaAs) infrared light-emitting diode with an NPN silicon phototransistor within a compact four-pin SOP package. The device provides a high isolation voltage of 2500Vrms, ensuring reliable signal transmission between isolated circuits. Key electrical characteristics include a typical rise time of 4µs and fall time of 5µs at a forward current of 5mA. The output transistor supports a maximum collector-emitter voltage of 40V. The component is designed for DC input applications and offers a current transfer ratio ranging from 100% to 400% under specified test conditions.

Feature Summary

• Integrates a GaAs LED and NPN silicon phototransistor for efficient optical coupling
• Provides high insulation strength with a 2500Vrms isolation voltage rating
• Features fast switching speeds with typical rise and fall times in the microsecond range
• Utilizes a lead-free plastic SOP-4 package suitable for surface mount assembly

Applications

• Industrial automation control systems requiring signal isolation
• Power supply feedback loops for noise immunity
• Microprocessor interface circuits for level shifting and protection

Procurement Notes

Verify the specific suffix F3-L-A against official datasheets to confirm pin configuration and packaging details. Ensure compatibility with required isolation voltage standards for your target application. Check for RoHS compliance markings if environmental regulations apply. Confirm availability status as product lines may undergo obsolescence notices. Cross-reference manufacturer part numbers to avoid substitution errors during procurement.

Selection Notes

Select this component when high isolation voltage and moderate speed are required for DC signal transmission. Consider the 40V output voltage limit and CTR specifications relative to load requirements. Evaluate the SOP-4 footprint constraints against PCB layout limitations. Compare rise and fall times against system timing budgets to ensure adequate performance margins for data integrity.

Part Context

This device belongs to the PS2861 series of high-isolation voltage photocouplers. The series typically features robust construction for industrial environments. Variants within the family may differ in packaging or specific electrical tolerances. The PS2861-1-F3-A represents a specific configuration optimized for standard surface mount processes while maintaining the core isolation capabilities of the broader product line.

Replacement Considerations

Direct substitutes include other single-channel optocouplers with comparable 2500Vrms isolation and similar pinouts. Verify that replacement parts match the SOP-4 package dimensions and lead spacing. Ensure equivalent current transfer ratios and switching speeds to maintain circuit functionality without redesign.