MOC8103S

Transistor, Photovoltaic Output Optoisolators Overview

The MOC8103S is a six-pin phototransistor optocoupler manufactured by Fairchild Semiconductor. It integrates a Gallium Arsenide infrared emitting diode with an NPN phototransistor in a dual-inline package. The device features no base connection to the chip, resulting in very low coupled capacitance and minimum noise susceptibility. It provides high collector-emitter breakdown voltage and closely matched current transfer ratios to minimize unit-to-unit variation.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• No base connection for minimum noise susceptibility
• Very low coupled capacitance
• High collector-emitter breakdown voltage
• Closely matched current transfer ratio

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 manufacturer origin carefully, as Fairchild Semiconductor's semiconductor division was acquired by onsemi. Ensure the specific suffix 'S' corresponds to the black package variant if that configuration is required for your design. Confirm RoHS compliance status through the official datasheet or distributor documentation before finalizing procurement.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when low noise susceptibility is critical due to its lack of base connection. It is suitable for applications requiring high isolation voltage and consistent current transfer characteristics. Verify that the six-pin DIP package fits the board layout constraints and that the input/output electrical specifications meet the circuit requirements.

Transistor, Photovoltaic Output Optoisolators Part Context

The MOC8103 belongs to the CNY17/MOC810X family of phototransistor optocouplers. These devices are designed for general-purpose isolation tasks. The MOC8103 specifically offers a standard configuration within this series, distinguished by its internal structure which omits the base lead to enhance performance in noisy environments compared to variants with base connections.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Compatible substitutes include MOC8100, MOC8101, MOC8102, MOC8104, MOC8105, MOC8106, MOC8107, and MOC8108 from the same family. Cross-reference with CNY171, CNY172, CNY173, and CNY174 equivalents. Verify pinout compatibility and electrical parameters such as current transfer ratio and breakdown voltage before substitution.