PS2705A-1-A

Overview

The PS2705A-1-A is a single-channel transistor output optocoupler from the NEPOC series, manufactured by Renesas Electronics. It integrates a GaAs light emitting diode and an NPN silicon phototransistor within a shielded SOP (Small Outline Package) to provide high-density mounting capabilities. The device features an isolation voltage of 3750 Vrms and supports both AC and DC input signals. Key electrical parameters include a maximum collector-emitter voltage of 70 V, a maximum collector current of 30 mA, and a power dissipation of 80 mW. The current transfer ratio ranges from 50% to 300%, with typical rise and fall times of 5 µs and 7 µs respectively. Operating temperatures span from -55°C to +100°C.

Feature Summary

• AC input response capability for direct connection to AC lines
• High isolation voltage of 3750 Vrms for enhanced safety
• SOP package design with ambient light shielding effect

Applications

• High density mounting applications requiring compact isolation
• AC input signal detection circuits
• General purpose digital isolation interfaces

Procurement Notes

Verify component status as Not Recommended for New Designs (NRND). Confirm specific ordering suffixes such as F3 or F4 for tape and reel packaging options if required. Ensure compliance with RoHS directives and check for any recent Product Change Notices regarding manufacturing updates before finalizing procurement plans.

Selection Notes

Select this component when AC input compatibility and high isolation are required in a small footprint. Compare against PS2705A-1 variants for different packaging or CTR specifications. Consider the 70 V collector-emitter voltage limit for load switching requirements. Verify thermal management needs given the 80 mW power dissipation rating in enclosed environments.

Part Context

This part belongs to the PS2705A-1 family of high isolation voltage optocouplers. It shares architectural similarities with other NEPOC series devices but is distinguished by its specific SOP-4 package and AC input characteristics. It serves as a legacy alternative to newer Renesas optocoupler families offering similar isolation performance.

Replacement Considerations

PS2705A-1-F3-A and PS2705A-1-F4-L-A are verified substitutes within the same family offering identical electrical characteristics with different packaging formats.