- #1
M.Caffery
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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 experiment, ask me here)
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 experiment, ask me here)