LED Module
07/11/2013 09:24
5 Reverse Leakage :
LED Bulb A: Reason: epitaxial materials, chip manufacturing, equipment, packaging , testing typically 5V lower reverse leakage current is 10UA, it can be fixed reverse voltage Reverse current quiz .
B: not the same type of LED reverse features big difference : P Green , Pu Huang chip reverse breakdown can reach over one hundred volts, while the S & P chip in ten to twenty volts.
C: epitaxially formed by the PN junction reverse leakage primary disadvantage of the formation of the internal layout of the chip manufacturing process does not work or the side surface corrosion buildup in silver plastic wire measuring surface , non- allocation of silver plastic with an organic solution . In order to avoid the appearance of silver plastic climb through the capillary junction region .
In recent years, LED light packaging technology and heat dissipation technology continues to evolve , LED lights stability has been achieved relatively good level, the light fades and color drift occurs mainly some cottage manufacturers of products , mainly due to thermal design is unreasonable. Relatively speaking,
LED lamp driver power supply problems to be serious , leading to death or flickering lights the main reason , that is , LED lamp drive power LED light quality has become a short board , according to the barrel theory , LED lamp drive power the life is the LED lamp life.
