various electronic components on detail of printed circuit board. electrotechnics

circuit board resistor electronic component color code diode transistor pcb detail part closeup electrical industry engineering technology green printed capacitor copper layer design safety hole air gap element equipment device hardware semiconductor tin soldered standard band stripe electrotechnics electrotechnology repair technical service industrial science development abstract ewaste recycling separation red pink yellow side view parts components resistors wire passive electricity colorful electric tech sorting disposal eco white colored blue black nopeople perspective