PS2841-4B-AX

Overview

The PS2841-4B-AX is a four-channel transistor output optocoupler manufactured by Renesas Electronics. It integrates GaAs infrared emitting diodes with NPN silicon phototransistors to provide electrical isolation. Key electrical parameters include an insulation voltage of 1500 Vrms, a collector-emitter voltage (Vceo) of 70 V, and a maximum collector current of 20 mA per channel. The device features a forward current rating of 20 mA and a typical forward voltage of 1.2 V. The current transfer ratio ranges from 100% to 400%. It operates within a temperature range of -40°C to +100°C and is housed in a 12-pin SSOP package.

Feature Summary

• Contains four independent channels for multi-signal isolation
• Utilizes GaAs LEDs and NPN phototransistors for high-speed response
• Provides 1500 Vrms basic insulation between input and output

Applications

• Industrial automation control systems
• Power supply feedback circuits
• Communication interface isolation

Procurement Notes

Verify the specific suffix against the official datasheet to confirm pinout compatibility and packaging type. Ensure the procurement source provides valid RoHS compliance documentation. Confirm that the component lot matches the manufacturer's current production standards to avoid obsolete stock issues during integration.

Selection Notes

Select this component when four isolated channels are required in a compact footprint. It is suitable for applications needing moderate speed and high isolation voltage. Consider thermal dissipation limits if operating near maximum current ratings. Verify that the 70 V collector voltage meets the load requirements of the target circuit design.

Part Context

This part belongs to the PS2841 series of ultra-shrink SOP optocouplers. It is designed as a space-saving solution for dense PCB layouts. The series offers multiple variants with different pin configurations and packaging options to suit various industrial and consumer electronic designs requiring reliable signal transmission across isolation barriers.

Replacement Considerations

Check for direct substitutes such as PS2841-4A-AX or PS2841-4B-F4. Verify pin-to-pin compatibility and identical electrical specifications before substitution. Ensure the replacement maintains the same insulation voltage and package dimensions.