MOC205

Transistor, Photovoltaic Output Optoisolators Overview

The MOC205 is a small outline optocoupler featuring a transistor output. It consists of an infrared emitting diode optically coupled to a monolithic silicon phototransistor detector. The device provides electrical isolation between input and output circuits. It is housed in an 8-SOIC package. Key electrical characteristics include a collector-emitter voltage rating of 30V, a maximum collector current of 150mA, and an isolation voltage of 3000Vrms. The component operates with a forward current up to 60mA.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Integrates a gallium arsenide infrared LED with a silicon phototransistor for signal transmission
• Provides high-voltage electrical isolation via optical coupling mechanism
• Designed for surface mount assembly in compact electronic systems

Transistor, Photovoltaic Output Optoisolators Applications

• Signal isolation in industrial control systems
• Interface circuits for microprocessor-based logic systems
• Switching applications requiring galvanic isolation

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific manufacturer source, as Fairchild Semiconductor assets are now managed by onsemi. Confirm that the part number corresponds to the original Fairchild specification rather than a modern equivalent with altered parameters. Ensure the datasheet version matches the required isolation ratings and pinout configuration for your design integration.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a low-cost, general-purpose transistor output optoisolator is required for basic signal transfer. Consider the 30V collector-emitter voltage limit and 150mA current capacity against load requirements. Evaluate the SOIC-8 package constraints for PCB layout. Verify compatibility with the driving circuit's forward current capabilities and the receiving circuit's input impedance.

Transistor, Photovoltaic Output Optoisolators Part Context

The MOC205 belongs to a family of small outline optocouplers produced by Fairchild Semiconductor. These devices are widely used for providing electrical isolation in digital communication and switching applications. The series typically includes variants with different output types or packaging options, serving as standard components for isolating low-power control signals from higher voltage loads.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Check for equivalents such as the MOC205R2M from onsemi, which may share similar specifications due to corporate acquisition. Verify pin compatibility and electrical ratings before substitution. Other generic NPN phototransistor output optocouplers in SOIC-8 packages may serve as alternatives if isolation and current ratings are sufficient.