MOC8103SD

Transistor, Photovoltaic Output Optoisolators Overview

The MOC8103SD is a transistor output optoisolator manufactured by Fairchild Semiconductor. It consists of an infrared emitting diode coupled with an NPN phototransistor in a 6-SMD package. The device provides electrical isolation with a voltage rating of 5300Vrms for one channel. Key technical specifications include a minimum collector-emitter breakdown voltage (BVCEO) of 70V and very low coupled capacitance. The absence of a base connection minimizes noise susceptibility, making it suitable for applications requiring high reliability and signal integrity.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Integrated infrared LED coupled with NPN phototransistor for optical signal transmission
• High isolation voltage rating ensuring safe separation between input and output circuits
• No base connection design to minimize noise susceptibility and coupled capacitance
• Minimum BVCEO of 70V providing robust collector-emitter breakdown performance

Transistor, Photovoltaic Output Optoisolators Applications

• Power supply regulators
• Digital logic inputs
• Microprocessor inputs
• Appliance sensor systems
• Industrial controls

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix 'SD' indicates the SMD package variant when sourcing. Confirm the manufacturer origin as Fairchild Semiconductor or authorized successor entities due to industry acquisitions. Ensure documentation matches the 6-SMD form factor rather than the standard DIP version. Request official datasheets to validate current transfer ratio groups and isolation ratings before integration into designs.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a transistor output optocoupler with no base lead is required to reduce noise coupling. The 6-SMD package facilitates surface-mount assembly processes. Consider the 70V minimum BVCEO for circuits operating within moderate voltage ranges. Verify that the 5300Vrms isolation rating meets the safety requirements of the target application environment.

Transistor, Photovoltaic Output Optoisolators Part Context

The MOC8103 belongs to a family of phototransistor optocouplers designed for power supply and industrial applications. The SD suffix specifically denotes the surface-mount device package configuration, distinguishing it from through-hole DIP variants like the MOC8103. This series emphasizes low coupled capacitance and matched current transfer ratios for consistent performance across units.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Equivalent parts include other 6-pin transistor output optocouplers with no base connection. Verify pinout compatibility and isolation voltage ratings when substituting. Check if alternative manufacturers offer matching CTR groups and BVCEO specifications.