name: 4N25 function: OptoIsolator package: DIP,6 manufacturer: Texas Instruments added-by: Steve Asher +--()--+ Anode | 1 6| Base Cathode | 2 5| Collector NC | 3 4| Emitter +------+ This information was added by a third party and may be incorrect. This pinout came from the Chipdir: http://www.chipdir.org/