PS2861B-1Y-F3-L-A

Overview

The PS2861B-1Y-F3-L-A is a single-channel transistor output optocoupler manufactured by Renesas Electronics. It integrates a GaAs infrared emitting diode and an NPN silicon phototransistor within a compact SSOP-4 package. The device provides high isolation voltage of 3750 Vrms between input and output circuits, ensuring reliable signal transfer in electrically noisy environments. Key electrical parameters include a maximum collector-emitter voltage of 70 V, a forward current of 5 mA, and a typical current transfer ratio of 150%. Switching characteristics feature a rise time of 4 μs and a fall time of 5 μs. The component supports a wide operating temperature range from -55°C to +110°C and has a power dissipation rating of 180 mW.

Feature Summary

• High isolation voltage capability of 3750 Vrms for robust circuit protection
• Integrated shield effect to minimize ambient light interference
• Compact SSOP-4 shrink small outline package design for high-density mounting
• Wide operating temperature range suitable for demanding industrial applications

Applications

• Interface and signal transfer circuits requiring surface mounting
• Industrial control systems with high-density layout requirements
• Power supply feedback loops and isolation interfaces
• General purpose digital signal isolation in electronic equipment

Procurement Notes

Verify the specific suffix configuration against official datasheets to ensure compatibility with required packaging and safety certifications. Confirm availability status as some variants may be subject to limited supply or end-of-life notices. Cross-reference manufacturer part numbers with distributor listings to validate authenticity and traceability before procurement.

Selection Notes

Select this component when high isolation voltage and wide temperature operation are critical requirements. Ensure the SSOP-4 package fits the available PCB space constraints. Verify that the switching speed meets the application timing requirements and that the forward current limits align with the driving circuit capabilities.

Part Context

This part belongs to the PS2861B-1 series of transistor output optocouplers designed for general-purpose isolation. It represents a standard solution for basic signal coupling where moderate speed and high reliability are prioritized over ultra-high bandwidth. The series is widely used in legacy and modern industrial designs requiring cost-effective galvanic isolation.

Replacement Considerations

Direct substitutes may include other single-channel optocouplers with similar 3750 Vrms isolation and SSOP-4 packaging. Verify pinout compatibility and electrical parameter equivalence before substitution. Consult official replacement guides for discontinued or alternate variants within the same product family.