The 4N35 is an optocoupler for general purpose applications.
It contains a light emitting diode optically coupled to a photo-transistor. It is packaged in a 6-pin DIP package
and available in wide-lead spacing option and lead bend SMD option. Response time, tr, is typically 3 µs and
minimum CTR is 100% at input current of 10 mA.

Applications
• I/O interfaces for computers
• System appliances, measuring instruments
• Signal transmission between circuits of different
potentials and impedances