4N26XSM

Overview

The 4N26XSM is a single-channel optoisolator manufactured by Isocom Components 2004 LTD. It features a phototransistor output with an integrated base terminal for enhanced switching speed and sensitivity. The device provides high isolation capability with a rated voltage of 5300Vrms. It is housed in a compact 6-SMD surface-mount package, designed for efficient integration into space-constrained circuit boards while maintaining robust signal transmission across isolated domains.

Feature Summary

• Integrates a phototransistor output with a dedicated base pin to improve response time and light sensitivity compared to standard configurations.
• Provides high-voltage electrical isolation between input and output circuits to protect sensitive components from transient voltages.
• Utilizes a surface-mount design to facilitate automated assembly and reduce footprint requirements on printed circuit boards.

Applications

• Signal isolation in industrial control systems
• Interface circuits for microprocessors and logic devices
• Switching applications in power supply units

Procurement Notes

Verify the specific suffix 'XSM' against official Isocom documentation to confirm the exact package dimensions and tape-and-reel specifications. Ensure compatibility with existing PCB footprints, as surface-mount variants may differ from through-hole equivalents. Confirm that the 5300Vrms isolation rating meets the safety requirements of the target application environment.

Selection Notes

Select this component when a phototransistor output with base access is required for faster switching or higher gain than standard optocouplers. Consider the 6-SMD package constraints and verify that the 5300Vrms isolation level aligns with regulatory standards for the intended equipment. Evaluate thermal management needs based on the surface-mount form factor.

Part Context

Isocom Components 2004 LTD specializes in infrared optoelectronic devices, including optocouplers and optoswitches. The company has a history dating back to the 1980s, originally emerging from Litronix operations. They focus on providing alternative sources for common commercial optocoupler types, often offering specialized parameter selections to meet specific circuit design requirements.

Replacement Considerations

Direct replacements include other 6-pin SMD transistor output optocouplers with base pins, such as the HCPL-2630 or similar series from other manufacturers. Verify pinout compatibility and isolation voltage ratings before substitution. Ensure the replacement part supports the same current transfer ratio and switching speed requirements.