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4n32 Optocoupler Photo darlington Opto Isolator

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DESCRIPTION The 4N32 and 4N33 are optically coupled isolators with a gallium arsenide infrared LED and a solicon photodarlington sensor. Switching can be achieved while maintaining a high degree of isolation between driving and load circuits. These optocouplers can be used to replace reed and mercury relays with advantages of long life, high speed switching and elimination of magnetic fields.



  1. Very high current transfer ratio, 500 % min.
  2. High isolation resistance, 1011 typical
  3. Standard plastic DIP package
  4. Compliant to RoHS Directive to 2002/95/EC and in accordance WEEE 2002/96/EC


  1. Low power logic circuits
  2. Telecommunications equipment
  3. Portable electronics
  4. Solid state relays
  5. Interfacing coupling systems of different potentials and impedances

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