PC123YC2J00F

Overview

The PC123YC2J00F is a single-channel transistor output optocoupler manufactured by Sharp Microelectronics. It features a 4-pin DIP package and provides an isolation voltage of 5000 Vrms. The device utilizes an NPN phototransistor output with a maximum collector current of 50 mA and a collector-emitter voltage rating of 80 V. Key electrical characteristics include a typical forward voltage of 1.2 V, a maximum forward current of 20 mA, and power dissipation of 200 mW. Transition times are specified at 4 µs for rise and 3 µs for fall.

Feature Summary

• Provides high-voltage electrical isolation between input and output circuits using optical coupling technology.
• Features a standard four-lead dual in-line package suitable for through-hole mounting applications.
• Utilizes an NPN phototransistor output stage capable of handling significant collector currents.

Applications

• General-purpose signal isolation in industrial control systems
• Interface circuits for microcontrollers and logic gates
• Power supply feedback loops requiring galvanic separation

Procurement Notes

Verify component authenticity upon receipt as this part number is listed as obsolete or not recommended for new designs. Confirm availability through authorized distributors or secondary market suppliers. Ensure storage conditions meet manufacturer specifications to prevent degradation of the internal semiconductor components before assembly.

Selection Notes

Select this component when a robust, low-cost solution for basic digital signal isolation is required. Consider the 5000 Vrms isolation rating for safety compliance. Evaluate the 4 µs switching speed against system timing requirements. Note that alternative packages or updated series may be necessary if surface-mount technology or higher reliability standards are mandated for the specific application design.

Part Context

This device belongs to the PC123 family of transistor output optocouplers from Sharp Microelectronics. The family is characterized by compact packaging and reliable performance for general-purpose isolation tasks. Variants within the series differ primarily in package type, such as SMD or DIP, and specific CTR rankings, while maintaining similar core electrical isolation capabilities.

Replacement Considerations

Public sources indicate FOD817 as a similar substitute option. Verify pinout compatibility and electrical parameter alignment, including isolation voltage and current transfer ratio, before implementing any replacement in existing circuit designs.