Description 
  The EL816 series of devices each consist of an infrared emitting diodes, optically coupled to a phototransistor
detector. They are packaged in a 4-pin DIP package and available in wide-lead spacing and SMD option.

Features:
•Current transfer ratio
  (CTR: 50~600% at IF=5mA, VCE=5V)
  (CTR: 63~320% at IF=10mA, VCE=5V)
• High isolation voltage between inputs and output (Viso=5000 V rms)
•Creepage distance >7.62 mm
• Operating temperature up to +110°C
• Compact small outline package
•Pb free and RoHS compliant.
• UL approved (No. E214129)
• VDE approved (No. 132249)
• SEMKO approved
• NEMKO approved
• DEMKO approved
• FIMKO approved
• CSA approved (No. 1143607)

Applications
• Programmable controllers
• System appliances, measuring instruments
• Telecommunication equipments
• Home appliances, such as fan heaters, etc.
• Signal transmission between circuits of different potentials and impedances