PS2861B-1Y-V-L-A

Overview

The PS2861B-1Y-V-L-A is a single-channel transistor output optocoupler manufactured by Renesas Electronics. It integrates a Gallium Arsenide (GaAs) infrared emitting diode and an NPN silicon phototransistor within a shielded SSOP-4 package. The device provides high isolation voltage of 3750 Vrms, suitable for applications requiring robust electrical separation. 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. It operates within an ambient temperature range of -55°C to +110°C.

Feature Summary

• High isolation voltage capability of 3750 Vrms for enhanced safety in signal transfer circuits
• Shrink Small Outline Package (SSOP) design optimized for high-density surface mount applications
• Integrated light shielding effect to minimize interference from ambient light sources
• Extended operating ambient temperature range up to 110°C for reliable performance in harsh environments

Applications

• Interface and signal transfer circuits requiring high isolation
• Industrial control systems with surface or high-density mounting constraints
• Power supply feedback loops requiring galvanic isolation
• General-purpose digital signal isolation in low-speed communication interfaces

Procurement Notes

Verify the specific suffix 'V-L-A' against official Renesas documentation to confirm compliance with relevant safety standards such as UL, CSA, or VDE, as these certifications are often tied to specific ordering codes. Confirm the component status, as variants within this series may be marked as Not Recommended for New Designs (NRND). Ensure the selected package matches the required PCB footprint for SSOP-4. Cross-reference the datasheet revision date to ensure all electrical parameters align with current manufacturing specifications before finalizing procurement.

Selection Notes

Select this component when a balance of moderate speed (microsecond range) and high isolation voltage is required for cost-sensitive designs. The 70 V collector-emitter voltage rating supports standard logic levels but may require verification for higher voltage loads. Consider the 150% typical CTR for driving subsequent stages; ensure the load current does not exceed the 50 mA maximum collector current. The SSOP-4 package limits thermal dissipation to 180 mW, necessitating adequate PCB copper area for heat management in high-duty cycle applications compared to larger DIP packages.

Part Context

This part belongs to the PS2861B-1 series of transistor output optocouplers from Renesas Electronics. The series is characterized by its use of GaAs LEDs and NPN phototransistors in compact SSOP packages. It serves as a successor or variant to earlier PS2861 models, offering improved isolation ratings and extended temperature ranges. The family is widely used in industrial automation and consumer electronics where space-saving surface mount technology is preferred over through-hole components.

Replacement Considerations

Direct pin-compatible replacements within the same Renesas family include PS2861B-1-F3-L-A. For cross-manufacturer substitution, verify that alternative parts meet the 3750 Vrms isolation requirement and match the 4 μs/5 μs switching speeds. Ensure the replacement maintains the SSOP-4 footprint and similar current transfer ratio characteristics to avoid redesigning drive circuits.