HKT002 SMD Soldering Practice Board Electronic Components DIY Learning Kit

Feature: This kit is designed for SMD soldering practice only. No need manual, put the right element to the right position as follow. Battery: 3*AA battery (package does not includes) Soldering Note: SMD components are relatively small, please note that do not lose, light-emitting diodes, diodes, chips have direction, pay attention. The LED green dot for the negative, you can use a multimeter diode lights light-emitting diodes, red pen for the positive, the black end of the diode is negative. When using power supply must pay attention to the power supply positive is connected + negative connected - the supply voltage is 5V. Package includes: Parameter Number Quantity Parameter Number Quantity 100-510/0805 R1-R50 50 0603 resistance PR1-5 5 4.7-10K/0805 R51-R60 10 NE555 U1 1 10-20K/0603 R61-R70 10 CD4017 U2 1 0.1uF/0805 C1-C10 10 Circuit board -- 1 1N4148/1206 D1-D10 10 Manual Chinese only 1 S8050/SOT-23 Q1-Q10 10 0402 -- 10 LED/0805 L1-L10 10 QFP44 IC -- 2 Test photos, for reference only.