4N28-M brand manufacturers: Aptina, Twicea stock, 4N28-M reference price.Aptina. 4N28-M parameters, 4N28-M Datasheet PDF and pin diagram description download.You can use the 4N28-M Optoisolators - Transistor, Photovoltaic Output, DSP Datesheet PDF, find 4N28-M pin diagram and circuit diagram and usage method of function,4N28-M electronics tutorials.You can download from the Twicea.