4N26FM

Overview

The onsemi 4N26FM is a single-channel optoisolator featuring an infrared LED input and a phototransistor output with a base terminal. It provides high isolation voltage of 7500Vpk and operates within a temperature range of -55°C to 100°C. The device utilizes a surface-mount 6-SMD package, suitable for applications requiring compact design and robust signal isolation between circuits.

Feature Summary

• High isolation voltage capability of 7500Vpk for reliable circuit separation
• Integrated base terminal on the phototransistor output for improved switching performance
• Surface-mount 6-SMD package configuration for automated assembly

Applications

• Industrial control systems requiring galvanic isolation
• Signal transmission across isolated ground potentials
• Microcontroller interface circuits for noise immunity

Procurement Notes

Verify component authenticity through authorized distributors. Confirm RoHS compliance status and check for recent Process Change Notifications (PCNs) affecting packaging or materials. Ensure storage conditions meet moisture sensitivity requirements before soldering.

Selection Notes

Select this component when high isolation voltage and surface-mount form factor are required. Consider the base terminal feature for faster switching speeds compared to standard phototransistors. Verify thermal management needs for the specific operating environment.

Part Context

This part belongs to the 4N26 family of optoisolators from onsemi. It shares functional similarities with other members like the 4N26TVM but differs in packaging and isolation ratings. The 4N26 series is widely used for general-purpose isolation tasks.

Replacement Considerations

Public confirmed substitute part numbers: None identified in provided documentation.