MCT61

Transistor, Photovoltaic Output Optoisolators Overview

The MCT61 is a dual phototransistor optocoupler manufactured by Fairchild Semiconductor, housed in an 8-pin DIP package. It integrates two independent infrared emitting diodes and phototransistors for signal isolation. Key electrical specifications include a maximum collector-emitter voltage of 30 V, a minimum isolation voltage of 5000 Vrms, and a typical current transfer ratio of 20%. The device operates within a temperature range of -55°C to 100°C and supports a maximum forward current of 50 mA.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Provides high-voltage isolation between input and output circuits via optical coupling
• Contains two independent channels for dual-signal transmission
• Features low power consumption with standard phototransistor output

Transistor, Photovoltaic Output Optoisolators Applications

• Isolating AC line signals from digital logic circuits
• Eliminating spurious grounds in digital-to-digital logic interfaces
• Protecting against high voltage transients in industrial control systems

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify component status as the MCT61 is listed as obsolete and discontinued by Fairchild Semiconductor. Confirm availability through authorized distributors or secondary markets. Ensure datasheet revisions match design requirements. Check for RoHS compliance status if required by project specifications. Validate pinout compatibility before integration into new designs.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when dual-channel isolation is required in compact DIP packaging. Consider the 5000 Vrms isolation rating for safety-critical applications. Evaluate the 30 V collector-emitter voltage limit against load requirements. Assess thermal performance within the specified operating temperature range. Compare current transfer ratio variations across different manufacturing batches.

Transistor, Photovoltaic Output Optoisolators Part Context

The MCT61 belongs to the MCT6 series of dual phototransistor optocouplers produced by Fairchild Semiconductor. This family includes variants such as MCT6 and MCT62, sharing similar structural characteristics. The components are designed for general-purpose isolation tasks. Production has ceased, marking the end of the lifecycle for this specific part number within the manufacturer's portfolio.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Designers should consult official obsolescence notices for recommended alternatives. Cross-reference with other dual-channel optocouplers ensuring matching isolation voltages and package dimensions.