50/20Pcs PC817C EL817C DIP-4 Optocouplers 4Pin Phototransistor Isolation IC
Product Description:
The PC817C and EL817C are industry-standard DIP-4 optocouplers designed to provide reliable galvanic isolation in low-to-medium voltage circuits. Featuring a phototransistor output and compact through-hole packaging, these optoisolators ensure noise-free signal transfer between high-voltage and low-voltage systems, ideal for switching power supplies, industrial controls, and microcontroller interfaces.
Applications:
Feedback loop isolation in flyback/forward power supplies (SMPS)
Microcontroller I/O protection in PLCs and industrial automation
Home appliance safety circuits (air conditioners, washing machines)
Digital logic level shifting and ground loop elimination
Medical equipment and EV charging station controls
Product Description:
The PC817C and EL817C are industry-standard DIP-4 optocouplers designed to provide reliable galvanic isolation in low-to-medium voltage circuits. Featuring a phototransistor output and compact through-hole packaging, these optoisolators ensure noise-free signal transfer between high-voltage and low-voltage systems, ideal for switching power supplies, industrial controls, and microcontroller interfaces.
Applications:
Feedback loop isolation in flyback/forward power supplies (SMPS)
Microcontroller I/O protection in PLCs and industrial automation
Home appliance safety circuits (air conditioners, washing machines)
Digital logic level shifting and ground loop elimination
Medical equipment and EV charging station controls