4N26-X017

Overview

The Vishay 4N26-X017 is a single-channel optoisolator featuring a phototransistor output with an accessible base terminal. It provides 5000Vrms isolation voltage and operates within a -55°C to 100°C temperature range. The device supports a maximum DC forward current of 60 mA and delivers a collector-emitter saturation voltage of up to 500 mV. Typical rise and fall times are 2 µs each, with a minimum current transfer ratio of 20% at 10 mA input.

Feature Summary

• Integrates a phototransistor output with a dedicated base connection for external control or speed adjustment capabilities.
• Provides robust electrical isolation rated at 5000Vrms between input and output circuits.
• Designed for surface-mount installation in a compact 6-SMD package configuration.

Applications

• General-purpose signal isolation in industrial control systems
• Microcontroller interface circuits requiring galvanic separation
• Power supply feedback loops for voltage regulation

Procurement Notes

Verify the specific suffix X017 against official Vishay documentation to confirm the 6-SMD surface-mount package variant. Ensure compatibility with RoHS3 standards and check for any recent Product Change Notifications regarding mold compound or bond wire specifications before finalizing procurement.

Selection Notes

Select this component when a transistor output with base access is required for custom drive conditions. The 5000Vrms rating suits applications needing high isolation strength. Consider the 2 µs switching speed for moderate-frequency digital signals rather than high-speed data transmission requirements.

Part Context

This part belongs to the 4N26 family of Vishay optocouplers, which are widely recognized standard transistor-output isolators. The X-series designation typically indicates specific packaging or manufacturing lot variations within the broader 4N26 product line, maintaining core electrical characteristics consistent with the original specification.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify pinout compatibility and electrical ratings with alternative manufacturers if direct substitution is necessary.

FAQ

What is the purpose of the base terminal on the phototransistor?

The base terminal allows for external connection to modify the phototransistor's performance, such as adjusting sensitivity or improving switching speed by providing a path for charge storage removal.

What is the maximum operating temperature for this device?

The device is rated for operation up to 100°C.