Single Channel Relay Module PCB

This is a PCB board designed to build a single channel relay module with optocoupler input.

Specifications:

• Size-56x29mm
• Input signal type -Active high
• All components are Through hole type
• OPTO COUPLER -EL817 OR PC817 4 PIN
• Use 1K resistor for 5 voltage relay application (2.2k for 12V)
• Capacitor 1 -1uF or 100NF ceramic capacitor with 5mm pitch
• Capacitor 2 -100uF 25V electrolytic capacitor with 2.54mm pitch
• LED size -3mm
• Transistor BC547 or BC546 or BC548
• Terminal block connector -xy126 or zb126 or xy128 or zb128 with 5mm pitch
• Relay- normal sugar cube