LED street lamp burning black what reason?
If the electrode is aluminum electrode, it is easy to be oxidized and black. Gold electrodes can also be vulcanized and darkened.
For example, when testing, due to the power supply instability caused by instantaneous high voltage, or misoperation caused by large current, static electricity will only occur somewhere above the chip black.
Is the chip breakdown, for high power, voltage and current are range, is mainly caused by insufficient heat, heat is not enough epoxy resin black, phosphor decay too fast, so that the chip looks black.
