MOC208M

Transistor, Photovoltaic Output Optoisolators Overview

The MOC208M is a single-channel transistor output optoisolator manufactured by onsemi, housed in an 8-SOIC surface-mount package. It provides 2500Vrms isolation voltage between input and output circuits. The device features a DC input type with a maximum forward current of 60 mA and a typical forward voltage of 1.15 V. The phototransistor output supports a maximum collector-emitter voltage of 70 V and a continuous collector current of 150 mA. Key switching parameters include a typical turn-on time of 7.5 µs and turn-off time of 5.7 µs. The Current Transfer Ratio ranges from 40% to 125% at a forward current of 10 mA. The unit operates within a temperature range of -40°C to 100°C.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Provides galvanic isolation for signal transmission between low-voltage control circuits and higher-voltage loads.
• Integrates a phototransistor output with an accessible base terminal for enhanced circuit flexibility and speed control.
• Designed for surface-mount assembly using the compact 8-SOIC package format.

Transistor, Photovoltaic Output Optoisolators Applications

• Solid-state relay driver circuits
• Microcontroller interface isolation
• Industrial process control signal isolation

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify component authenticity through authorized distribution channels due to the part's obsolete status. Confirm RoHS compliance and specific packaging variants (tube vs. tape) as availability may vary among secondary market suppliers. Ensure the selected revision matches the required pinout and electrical specifications for the target design.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a single channel with base-accessible output is required for moderate-speed switching applications. Compare against the MOC206M and MOC207M if different CTR characteristics or alternative package styles are needed. Verify that the 70V output voltage rating meets the load requirements and that the 2500Vrms isolation level satisfies safety standards.

Transistor, Photovoltaic Output Optoisolators Part Context

The MOC208M belongs to the MOC20x series of transistor output optocouplers from onsemi. This family is designed for general-purpose isolation tasks where cost-effectiveness and reliability are prioritized. The MOC208M specifically offers one channel, distinguishing it from dual-channel variants like the MOCD208M. It serves as a legacy solution for designs requiring robust electrical isolation in compact form factors.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

The MOC208M is marked as obsolete. Potential substitutes include the MOC206R2M and MOC207R2M from onsemi, which offer similar functionality but may differ in Current Transfer Ratio specifications. Evaluate these alternatives based on specific CTR requirements and availability constraints.