EC Buying 5Pcs DIY SMD SMT Component Welding Practice Board Soldering Skill Training Board LED Flow Light Kit CD4017 NE555 Electronic DIY Board for Competition

Parameter Introduction: Board size: 89mm * 58mm/3.5inch * 2.28inch Plate thickness: 1.6mm/0.06inch Working voltage: DC3-12V Component List Three columns on the left of the circuit board 2.2 Ohm resistor: R1-R24; 1206; 2R2 Capacitor: C1-C12; 0805; brown 2K resistor: R13-R24; 0805; 202 Three columns on the right side of the circuit board 16K resistor: R35-R47; 0603; 163 Capacitor: C13-C26; 0603; brown 2.72K resistor: R25-R33; 1812; 272 12 elements at four corners outside the circle 8050 triode: Q1-Q4; SOT23; J3Y LED: D16-D194; 0805; green 330 ? resistor: R65-R68; 0805; 301 One circle of elements on the circle LED: D2-D11; 0805; blue 330 ? resistor: R51-R60; 0805; 331 Elements inside the circle 2M resistor: R48P; 0805; 205 10K resistor: R49; 0805; 103 0.01uF capacitor: C27 C28; 0805; brown 330 ? resistor: R50; 0805; 331 10K resistor: R61-R64; 0805; 103 Light emitting diode: D1; 0805; blue Red cylindrical element: D12-D15; LL34; 1N4148 8-pin IC: U1; SOP08; NE555 16 pin IC: U2; SOP16; CD4017