PS2811-1-L-A

Overview

The PS2811-1-L-A is a single-channel transistor output optocoupler manufactured by CEL, housed in a surface-mount SSOP-4 package. It provides electrical isolation with an insulation voltage of 2500 Vrms. The device features an NPN phototransistor output capable of handling a maximum collector current of 40 mA and a collector-emitter voltage of 40 V. Typical performance includes a high current transfer ratio of 200% at a forward current of 1 mA. Operating characteristics specify a forward voltage of 1.15 V at 5 mA input, with power dissipation rated at 180 mW. The unit supports a wide temperature range from -55°C to +100°C and exhibits switching times of 4 µs rise and 5 µs fall.

Feature Summary

• High current transfer ratio for efficient signal transmission
• Robust electrical isolation capability
• Surface-mount packaging for automated assembly

Applications

• General-purpose signal isolation in industrial control systems
• Interface circuits between microcontrollers and power stages
• Noise immunity enhancement in data communication lines

Procurement Notes

Verify component authenticity through authorized channels due to limited availability status reported by major distributors. Confirm RoHS compliance details directly with the manufacturer or supplier documentation. Ensure the specific suffix matches design requirements as supply constraints may affect lot consistency. Validate datasheet revisions prior to final procurement to align with current manufacturing specifications.

Selection Notes

Select this component when high CTR and compact SMD form factor are required. Compare against standard variants if different isolation ratings or pin configurations are needed. Consider thermal management within the SSOP-4 package limits during high-duty cycle operations. Verify input current requirements against the specified 5 mA typical value to ensure proper LED drive conditions.

Part Context

This part belongs to the PS2811 series of transistor output optocouplers designed for general isolation applications. The series offers various package options and isolation levels. The PS2811-1-L-A specifically denotes the single-channel variant with L-A suffix indicating specific tape-and-reel or packaging attributes defined by the manufacturer. It serves as a modern replacement for older through-hole equivalents in space-constrained designs.

Replacement Considerations

Direct substitutes include the Renesas PS2811-1-A, though note differences in CTR ranges and recommended design status. Cross-reference with other PS2811 family members for pin-compatible alternatives. Verify that any substitute maintains the 2500 Vrms isolation rating and SSOP-4 footprint to ensure mechanical and electrical compatibility.