MOC8106

Transistor, Photovoltaic Output Optoisolators Overview

The MOC8106 is a single-channel transistor output optocoupler manufactured by Fairchild Semiconductor. It integrates an infrared LED with an NPN silicon phototransistor in a 6-pin DIP package where the base pin remains unconnected. Key electrical parameters include a collector-emitter voltage of 70 V, a maximum collector current of 50 mA, and a forward voltage of 1.5 V at 60 mA. The device offers a minimum isolation voltage of 4170 Vrms and operates within a temperature range of -40°C to +100°C.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Features an unconnected base pin on the phototransistor to enhance noise immunity in high EMI environments.
• Provides high isolation voltage capabilities for safe signal transmission between systems with different potentials.
• Utilizes an infrared LED coupled to a silicon phototransistor for reliable optical isolation.

Transistor, Photovoltaic Output Optoisolators Applications

• Microprocessor input/output isolation
• DC motor controllers
• Industrial system controllers
• Signal transmission between systems of different potentials and impedances

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific manufacturer source, as the MOC8106 series has been produced by multiple vendors including Fairchild Semiconductor, onsemi, and Motorola. Confirm that the component matches the required 6-pin DIP package and ensure the base pin is unconnected if high noise immunity is critical for the design. Check RoHS compliance status against the specific production batch documentation.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when designing circuits requiring galvanic isolation between low-voltage logic and higher-voltage loads. The unconnected base configuration makes it suitable for applications susceptible to electromagnetic interference. Ensure the circuit design accommodates the specified rise and fall times and that the operating temperature range aligns with the environmental conditions of the final assembly.

Transistor, Photovoltaic Output Optoisolators Part Context

The MOC8106 belongs to a family of 6-pin DIP optocouplers designed primarily for power supply and industrial control applications. It is often grouped with variants like the MOC8107 and MOC8108, which share similar structural characteristics but may differ in current transfer ratio specifications. The device represents a standard solution for basic digital isolation tasks in legacy and modern electronic designs.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Equivalent parts include the MOC8106M (onsemi) and MOC8106SD (Fairchild). Verify pin compatibility and electrical ratings before substitution, as packaging suffixes may indicate surface mount or tape-and-reel variations rather than functional changes.

Transistor, Photovoltaic Output Optoisolators FAQ

What is the function of the unconnected base pin?

The base pin is left unconnected to improve noise immunity, making the device more resistant to electromagnetic interference in high-noise environments.

What is the maximum isolation voltage rating?

The device supports a minimum isolation voltage of 4170 Vrms, with some datasheets citing up to 5300 Vrms depending on the specific manufacturer's testing standards.