MOC8111

Transistor, Photovoltaic Output Optoisolators Overview

The MOC8111 is a single-channel optocoupler manufactured by Isocom Components 2004 LTD. It consists of an infrared LED coupled with an NPN phototransistor in a standard 6-pin dual in-line plastic package. The device features a minimum collector-emitter breakdown voltage (BVCEO) of 70V and offers high isolation voltage ratings, typically up to 5300Vrms or 7500VAC peak depending on the specific variant and certification. The current transfer ratio is selected into groups, with the MOC8111 variant providing a minimum CTR of 20% at 10mA input current. It operates within a temperature range of -55°C to 100°C.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• High isolation voltage capability for robust circuit protection
• NPN phototransistor output with unconnected base pin for improved noise immunity
• Compliant with international safety standards including UL, VDE, and CECC

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 (e.g., X, G, TVM) to confirm lead frame configuration and compliance certifications. Confirm availability as some variants may be discontinued or have long lead times. Ensure the selected CTR group meets the design requirements. Check RoHS status if required for the application.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select based on required current transfer ratio and isolation voltage rating. The MOC8111 provides a lower CTR compared to other members of the MOC811x series. Ensure the package type matches the PCB layout constraints. Verify that the operating temperature range suits the environmental conditions of the target application.

Transistor, Photovoltaic Output Optoisolators Part Context

The MOC8111 belongs to the MOC811x series of optically coupled isolators designed for power supply applications. These devices are characterized by their high BVCEO and lack of base connection, which enhances noise immunity. They are widely used in industrial and consumer electronics where galvanic isolation is critical for safety and signal integrity.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Direct substitutes include MOC8111G and MOC8111X from Isocom Components. Other manufacturers offer equivalent parts such as PC811 or TLP785, but electrical parameters like CTR and isolation voltage must be verified against the original datasheet specifications.