The 4N25 is an optocoupler for general purpose applications.It contains a light emitting diode optically coupledto a photo-transistor. It is packaged in a 6-pin DIP packageand available in wide-lead spacing option and leadbend SMD option. Response time, tr, is typically 3 µs andminimum CTR is 20% at input current of 10 mA.
Response time (tr: typ., 3 µs at VCE = 10 V, IC = 2 mA, RL = 100 Ω)
Current Transfer Ratio (CTR: min. 20% at IF = 10 mA, VCE = 10 V)