MOC256R2M

Transistor, Photovoltaic Output Optoisolators Overview

The MOC256R2M is a single-channel transistor output optocoupler manufactured by onsemi, formerly Fairchild Semiconductor. It features an NPN phototransistor output with a base terminal for enhanced switching speed and stability. The device provides 2500 Vrms isolation voltage between input and output circuits. Key electrical parameters include a maximum collector-emitter voltage of 30 V, a maximum collector current of 150 mA, and a minimum DC current transfer ratio of 20%. It operates within a temperature range of -40°C to +100°C and is housed in an SOIC-Narrow-8 surface-mount package.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Integrated base terminal on the NPN phototransistor output to improve switching characteristics and reduce storage time.
• High isolation voltage capability of 2500 Vrms ensuring reliable signal transmission across isolated domains.
• Designed for AC input applications with robust transistor output suitable for driving logic inputs or relay coils.

Transistor, Photovoltaic Output Optoisolators Applications

• Solid-state relays
• AC mains switching circuits
• Microcontroller interface isolation

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the manufacturer designation carefully, as this component was originally produced by Fairchild Semiconductor and is now part of onsemi's portfolio. Ensure the ordering suffix matches the required tape and reel configuration. Confirm RoHS compliance status through the official datasheet before finalizing procurement specifications.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when base-driven phototransistor performance is required for faster turn-off times compared to standard versions. Consider the 30 V collector-emitter voltage rating for low-voltage logic interfacing. Verify that the SOIC-8 package dimensions fit the target PCB layout constraints.

Transistor, Photovoltaic Output Optoisolators Part Context

This device belongs to the MOC256M series of AC input phototransistor optocouplers. It is designed for general-purpose isolation where moderate speed and high reliability are necessary. The series is widely used in industrial control systems and consumer electronics requiring galvanic isolation.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Direct substitutes may include other MOC256 variants from onsemi or equivalent parts from manufacturers like Vishay or Broadcom, provided they match the pinout, isolation voltage, and CTR specifications. Always verify mechanical footprint compatibility.