small light-emitting diodes on printed circuit board. surface-mount technology

electronic circuit board diode small component detail microelectronics green closeup semiconductor surface mount technology macro pcb smt device micro resistor printed smd assembly copper layer design metal hole mini miniaturization electric part element led light emitting rectangular capacitor electrical engineering electronics industry industrial electrotechnical technical manufacture spare science development white yellow components layout miniature miniaturisation system equipment source transparent technique electrotechnics electrotechnology repair service microfabrication disassembled supply tech abstract background nopeople