PC818I

Transistor, Photovoltaic Output Optoisolators Overview

The PC818I is a single-channel optoisolator manufactured by Sharp Microelectronics, featuring a transistor output configuration. It provides an isolation voltage of 5000Vrms between the input infrared LED and the phototransistor output. The device utilizes a 4-SMD surface-mount package, designed for high-density mounting applications. It operates within a temperature range of -30°C to 100°C and supports DC input signals. Key electrical characteristics include a collector-emitter voltage of 80V and a current transfer ratio ranging from 50% to 600% at an input current of 5mA.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Provides high-voltage electrical isolation between input and output circuits
• Utilizes a compact surface-mount package for automated assembly
• Features a phototransistor output for digital signal transmission

Transistor, Photovoltaic Output Optoisolators Applications

• Signal isolation in microprocessor systems
• Switching power supply feedback loops
• Solid-state relay driver circuits

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix 'I' against the manufacturer's official datasheet to confirm pinout compatibility and packaging variations. Ensure the component meets required insulation standards for the target application environment. Cross-reference the lot code with Sharp Microelectronics documentation to validate authenticity and traceability before integration into production lines.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a single-channel isolation barrier is required with a surface-mount footprint. Consider the 80V collector-emitter voltage rating for low-voltage switching tasks. Evaluate the current transfer ratio requirements against the load conditions to ensure adequate signal transmission efficiency without excessive input current drive.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the Sharp PC817/PC818 series of photocouplers, which are widely used for general-purpose signal isolation. The series offers various channel counts and package options, including DIP and SMD configurations. The PC818I specifically addresses the need for compact, reliable isolation in space-constrained electronic designs requiring robust performance across industrial temperature ranges.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Compatible substitutes include other single-channel SMD optocouplers with similar 5kV isolation ratings and transistor outputs, such as the PC817N or equivalent generic alternatives. Verify that replacement parts match the 4-SMD footprint and maintain comparable current transfer ratios and voltage ratings.