Recent content by M.Caffery

Good thought! I was thinking whether high temperature and humidity affects phosphor and colloid so that the possibility of attenuation caused by phosphor might be lowered.

In a COB product with FR-4 substrate, blue light chip excites yellow phosphor to form white light. Why is room temperature aging attenuation higher than 85 degree/85% RH aging attenuation? (After 1000h lighting, Attr=7% while Att85=1%) (If you have further questions about how I do the...