4N22ATX

Overview

The 4N22ATX is a single-channel transistor output optocoupler manufactured by TT Electronics/Optek Technology. It features an NPN phototransistor output housed in a TO-78-6 metal can package designed for through-hole mounting. The device provides an insulation voltage of 1000 Vrms and supports a maximum collector current of 50 mA with a collector-emitter voltage rating of 35 V. Key electrical parameters include a minimum current transfer ratio of 25% at a forward current of 10 mA, a typical forward voltage of 1.3 V, and a power dissipation capacity of 300 mW. Operating temperatures range from -55°C to +125°C.

Feature Summary

• Hermetically sealed miniature metal can construction for environmental protection
• High isolation voltage capability for circuit safety
• Integrated base terminal on the phototransistor for improved switching performance

Applications

• Industrial control systems requiring galvanic isolation
• Solid-state relay driver circuits
• Signal transmission across isolated ground planes

Procurement Notes

Verify the specific suffix designation against official manufacturer documentation to confirm screening levels and exact electrical tolerances. Ensure the procurement channel sources components directly from authorized distributors or the manufacturer to guarantee authenticity. Confirm RoHS compliance status and lead times prior to ordering, as availability may vary based on production schedules.

Selection Notes

Select this component when hermetic sealing and high reliability are required for optical isolation applications. The integrated base terminal allows for faster switching speeds compared to devices without a base connection. Verify that the TO-78-6 package dimensions fit the target PCB layout and that the thermal dissipation requirements align with the system's operating environment.

Part Context

This part belongs to the 4N22 series of optocouplers produced by TT Electronics/Optek Technology. The series includes variants such as the standard 4N22 and the 4N22A, which share similar core functionalities but may differ in screening standards or specific parameter ranges. The ATX suffix typically denotes a specific manufacturing lot or screening level within the company's product line.

Replacement Considerations

The 4N22 is listed as a parameter-equivalent substitute. Verify pin compatibility and electrical specifications before substitution.