PC817: Single-Channel Compact Dual-In-Line Package Optocoupler
Current transfer rate: (CTR: min 50%, IF = 5mA, V CE = 5V);
The high isolation voltage between input and output is 5000V RMS.

Forward Current (ICEO): 50mA
Forward peak current (ICE max): 1A
Reverse voltage: 6V
Power consumption: 70mW
Collector Emitter Voltage: 35V
Emitter Collector Voltage: 6V
Collector current: 50mA
Collector power consumption: 150mW
Total power consumption: 200mW
Working temperature: -30~+100 degrees Celsius
Collector Emitter Saturation Voltage: 0.1V (typ.).