PS2861-1-F3-L-A

Overview

The PS2861-1-F3-L-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 output. The device provides electrical isolation with a rated voltage of 2500Vrms. It features a minimum Current Transfer Ratio (CTR) of 100% at a forward current of 5mA and supports a collector current of up to 40mA per channel. The component is housed in a compact 4-SOP surface-mount package, designed for reliable signal transmission across isolated circuits.

Feature Summary

• Integrates a GaAs LED with an NPN silicon phototransistor for efficient optical coupling
• Provides high-voltage isolation capability rated at 2500Vrms between input and output
• Ensures high current transfer efficiency with a minimum CTR of 100% at 5mA
• Utilizes a compact 4-pin SOP surface-mount package for space-constrained designs

Applications

• Industrial control systems requiring signal isolation
• Power supply feedback loops for noise immunity
• Microprocessor input/output interface isolation
• Solid-state relay driver circuits

Procurement Notes

Verify the specific suffix -F3-L-A against official datasheets to confirm tape-and-reel packaging and lead-free status. Confirm part status as obsolete or active through authorized distributors before procurement. Ensure compatibility with existing PCB footprints for the 4-SOP package. Cross-reference manufacturer lot codes for authenticity. Validate isolation voltage ratings match system requirements.

Selection Notes

Select this component when a single-channel transistor-output optocoupler with 2500Vrms isolation is required. Consider the 100% minimum CTR for applications demanding high switching speed or low drive current. The 40mA output current capacity suits direct driving of logic inputs or small loads. Verify that the SOP package dimensions fit the mechanical constraints of the target assembly.

Part Context

This part belongs to the NEPOC series from CEL, focusing on high-isolation voltage photocouplers. The PS2861-1 variant specifically denotes a single-channel configuration with transistor output. The -F3-L-A suffix indicates specific packaging and material compliance details defined by the manufacturer. It serves as a standard solution for galvanic isolation in electronic circuits.

Replacement Considerations

Check for direct pin-compatible substitutes within the same family, such as PS2861-1-V-F3-L-A, noting any differences in voltage ratings or status. Verify functional equivalence regarding CTR and isolation voltage when considering third-party alternatives. Ensure replacement parts maintain the 4-SOP package outline for board compatibility.