MCT2ESM

Transistor, Photovoltaic Output Optoisolators Overview

The MCT2ESM is a single-channel transistor output optocoupler manufactured by Fairchild Semiconductor. It integrates a gallium arsenide infrared emitting diode with a silicon phototransistor in a 6-pin dual in-line package. Key electrical specifications include a minimum collector-emitter breakdown voltage of 30 V and a maximum forward current of 0.1 A. The device features a nominal current transfer ratio of 20% and a maximum dark power of 50 nA. It supports an operating temperature range from -55 °C to 100 °C and offers high insulation capability.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Integrates a gallium arsenide infrared LED with a silicon phototransistor for signal isolation
• Provides high insulation voltage capability for safe circuit separation
• Features UL recognition for compliance with safety standards

Transistor, Photovoltaic Output Optoisolators Applications

• General purpose signal isolation in industrial control systems
• Interface between microprocessors and peripheral devices
• Switching applications requiring galvanic isolation

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix (ESM) against the manufacturer's current datasheet to confirm pinout and packaging details. Check for obsolescence status as some MCT2 variants are discontinued. Ensure the component meets RoHS requirements if applicable to your design. Confirm lead-free status and verify the manufacturer source, noting that onsemi acquired Fairchild's semiconductor business.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a low-cost, general-purpose optoisolator with transistor output is required. Consider the 20% nominal current transfer ratio for drive requirements. Verify that the 30 V collector-emitter breakdown voltage meets the load requirements. Ensure the 6-pin DIP or MDIP package fits the PCB layout constraints. Compare input forward current limits with available drive signals.

Transistor, Photovoltaic Output Optoisolators Part Context

The MCT2 series belongs to a family of single-channel optocouplers designed for general isolation tasks. Fairchild Semiconductor originally developed this line, which has since been integrated into onsemi's portfolio. The MCT2ESM specifically denotes a surface mount variant within the broader MCT2XXX series, maintaining compatibility with standard isolation applications while offering different packaging options compared to through-hole versions.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Check for direct substitutes such as MCT2EM or MCT210M from the same manufacturer family. Verify pin compatibility and electrical parameters before substitution. Note that some older MCT2 variants may be obsolete; consult current distributor availability for equivalent parts.