The PC817 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.

1. Current transfer ratio （CTR：50%-600% at IF=5mA,VCE=5V）

2. High isolation voltage between inputc and output （Viso=5000V rms）

3. Creepage distance＞7.62mm

4.  Pb free and ROHS compliant

5. UL/CUL Approved (File No. E340048)