PS2561B-1-A

Overview

The PS2561B-1-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 plastic DIP package. The device provides electrical isolation with a rated insulation voltage of 5000 Vrms. It supports a maximum collector-emitter voltage of 80 V and a continuous collector current of 50 mA. The component operates reliably across an ambient temperature range from -55°C to +110°C, featuring high current transfer ratio capabilities suitable for robust signal transmission in isolated circuits.

Feature Summary

• Integrates a GaAs light emitting diode and an NPN silicon phototransistor for optical coupling
• Provides high isolation capability with a rated insulation voltage of 5000 Vrms
• Designed for operation at elevated ambient temperatures up to 110°C
• Utilizes a standard plastic Dual In-line Package (DIP) for through-hole mounting

Applications

• Industrial control systems requiring galvanic isolation
• Power supply feedback loops for signal transmission
• Microcontroller input/output isolation interfaces
• Solid-state relay driver circuits

Procurement Notes

Verify the specific suffix against official Renesas documentation to confirm lead configuration and creepage distance requirements. Confirm availability status as distribution channels may list obsolete or not recommended for new design variants. Ensure the selected part matches the required insulation voltage and operating temperature specifications for the target application environment before procurement.

Selection Notes

Select this component when a standard DIP form factor is required for through-hole assembly. Verify that the 5000 Vrms isolation rating meets the safety standards of the end equipment. Consider the 110°C operating temperature limit for thermal management planning. Ensure the NPN phototransistor output type aligns with the logic levels and drive requirements of the receiving circuitry.

Part Context

This component belongs to the PS2561B series of NEPOC optocouplers. The series includes various package options such as surface mount gull-wing types and long creepage distance variants. The PS2561B-1-A specifically denotes the standard plastic DIP version. This family is designed for general-purpose isolation applications where reliable DC signal transmission is necessary between separate electrical domains.

Replacement Considerations

Consult official cross-reference data for direct substitutes. Verify pinout compatibility and electrical parameter equivalence for any alternative components.