MCT6 IC Dual Phototransistor Optocoupler IC

MCT6 IC Dual Phototransistor Optocoupler IC 

The MCT6 is a dual-channel phototransistor optocoupler designed to provide safe, reliable galvanic isolation between two independent circuits.
Each of the two channels contains an infrared LED (IRED) optically coupled to an NPN silicon phototransistor, enabling electrical signal transfer through light rather than direct electrical conduction.

Housed in a standard DIP-8 through-hole package, the MCT6 is ideal for PCBs where multiple isolated channels are required but board space must be conserved.
Because both channels are electrically isolated from each other, the MCT6 supports multi-signal isolation—often used in control systems, PLC inputs, communication isolation, motor control interfaces, and power supply feedback loops.

The device offers high isolation voltage (typically 5 kVrms) and strong immunity against electrical noise, making it suitable for applications involving high voltages, switching noise, or sensitive logic-level circuits.
With stable CTR (Current Transfer Ratio), the MCT6 ensures consistent behavior across temperature and operating conditions.
It is suited for low-to-moderate speed signal transfer, typical in digital logic interfacing, relay driving, state monitoring, and low-frequency analog signal coupling.

Click here to view the related products

Features

• Dual optocoupler channels in one package
• Infrared LED input and NPN phototransistor output
• High isolation voltage (typically 5 kV RMS)
• Low input current drive requirements
• Good CTR (Current Transfer Ratio) stability
• Suitable for both analog and digital signal isolation
• DIP-8 through-hole package
• Compact solution for multi-line isolation
• Wide operating temperature range

Applications 

• Dual-signal isolation for microcontrollers
• PLC and industrial automation systems
• Switching power supply feedback
• Motor driver and relay driver interfaces
• Multi-channel communication signal isolation
• UART/RS232/RS485 logic isolation
• Sensor input isolation in noisy environments
• Battery protection and power monitoring
• Smart energy meters and control panels
• Home automation and IoT devices
• Fault indication and status monitoring

MCT6.. Datasheet