20PCS PC817B PC817-B DIP4 DIP PC817 B new original
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16003 Electronic component Electronic component kit Module board PCB Integrated circuit Optocoupler 74Series CD40Series Transistor Voltage regulator(78 79) Darlington tube(TIP) controlled tube MOSFET Diode DO41 DO35 DO15 SOD SMD LED diode Bridge Rectifiers Zener potentiometer RK097G RK097N 3362P 3590S knob RM65 WXD3132W RV097NS WH148 WXD312 3296W Capacitor Electrolytic capacitor Tantalum capacitor Monolithic capacitor CBB capacitor 275AVC X2 capacitor Resistor 0603 SMD r...