PS2805-4-A

Overview

The PS2805-4-A is a four-channel transistor output optocoupler manufactured by Renesas Electronics. It features an NPN phototransistor output and operates within a temperature range of -55°C to +100°C. Key electrical parameters include a maximum collector-emitter voltage of 80 V, a forward current of 50 mA, and a forward voltage of 1.1 V. The device provides an isolation voltage of 2.5 kVrms with a typical rise time of 3 μs and fall time of 5 μs. Power dissipation is rated at 200 mW, and it is housed in a 16-pin SSOP package.

Feature Summary

• Provides high-speed switching capabilities for signal transmission
• Offers high isolation voltage for circuit protection
• Features a shielded plastic SSOP package to block ambient light

Applications

• Programmable logic controllers
• OA equipment
• Measurement instruments
• Mixed integrated circuits

Procurement Notes

Verify the component status carefully before procurement as this part may be designated as Not Recommended for New Designs (NRND). Confirm that the specific pinout and electrical characteristics match the legacy design requirements. Ensure compatibility with existing PCB footprints and thermal management strategies during integration planning.

Selection Notes

Select this component when four isolated channels are required in a compact surface-mount form factor. Consider the 80 V collector-emitter voltage rating and 50 mA forward current limits against load requirements. Evaluate the 3 μs rise time suitability for the target signal frequency. Verify that the SSOP-16 package dimensions fit the available board space constraints.

Part Context

This device belongs to the PS2805 series of optical couplers from Renesas Electronics. It utilizes a GaAs LED coupled to an NPN silicon phototransistor. The series is designed for high-density applications requiring reliable electrical isolation between input and output circuits while maintaining a small physical footprint.

Replacement Considerations

Consult official Renesas documentation for qualified substitute part numbers. Verify that any replacement maintains identical channel count, package type, and electrical ratings to ensure circuit compatibility.