The components 6N135, 6N136, EL4502 and EL4503 each consist of an infrared emitting diode optically coupled to a high-speed photodetector transistor.
high-speed photodetector transistor. A separate connection for the bias voltage of the photodiode and the collector of the output transistor increases the speed by several orders of magnitude compared to conventional phototransistor couplers, as the base-collector capacitance of the input transistor is reduced.
capacitance of the input transistor. The components are housed in an 8-pin DIP package and are available in wide-lead spacing and as an SMD option.
spacings and as an SMD option
