4N25 General Purpose Optocoupler from Mexico
4N25 is a versatile optical isolator with GaAs infrared LED coupled to phototransistor in 6-pin DIP, offering 2.5kV isolation. Falls under HTS 8541.49.80.00 for general purpose interface isolation in computers, printers, and instrumentation. Base-emitter pin enables high-speed switching applications.
Duty Rate — Mexico → United States
0%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• 6-pin DIP vs 4-pin DIP distinction important; provide pinout diagrams showing base connection
• Isolation test voltage certification (2500Vrms) required for customs verification
• Avoid declaring as 'transistor' only; specify complete optical coupling function