various semiconductor silicon rectifier diodes on a white background

active anode background barrier black board cathode circuit closeup component contact current design development device different diode disposal eco electric electrical electricity electronic electrotechnics electrotechnology element engineering equipment ewaste field group heap industry isolated many metal network nobody object part pcb pile pin power printed rectifier recycle recycling repair round schottky science semiconductor separation service shop silicon silver silvered silvery size sorting spare supply tech technical technology terminal two type various voltage white wire zener