The 4N29, 4N30, 4N31, 4N32, 4N33 series of optically coupled isolators consist of an infrared light emitting diode NPN silicon photo in line plastic package. High Current Transfer Ratio
High Isolation Voltage (5.3kVRMS, 7.5kVPK )
All electrical parameters 100% tested

APPLICATIONS:
Computer terminals
Industrial systems controllers
Telephone sets, Telephone exchangers
Signal transmission between systems of different potentials and impedances