What AQL level to use to test LEDs

D

Daidawei

#1
We manufacture wireless LED lights and have had many quality problems from our LED supplier (dead LEDs, color differences, etc). We've established a testing program but I am not sure what level to assign to major and minor defects. Are there any industry standards for this?

Thanks.
 
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Jen Kirley

Quality and Auditing Expert
Staff member
Admin
#2
Good day Daidawei,

The AQL is not dependent on what is being tested/inspected. Before waiting for more answers, please review the related threads linked at the bottom of this page. When you open them, you might also find more related threads at the bottom of those pages.
 
D

Daidawei

#3
Sorry, maybe I wasn't clear enough. I want advice on what AQL levels I should choose for inspecting LEDs.
 

somashekar

Staff member
Super Moderator
#4
Sorry, maybe I wasn't clear enough. I want advice on what AQL levels I should choose for inspecting LEDs.
You need to first get the supplier establish his process that will avoid the dead LED's (Failed wire bond perhaps) and color difference (wave length range control perhaps) ... any other ??
Then ask your supplier what process capability he can achieve once the specifications are frozen. Once this is confirmed by your supplier , the same can be translated into your AQL selection. This can ensure your AQL works for you and your supplier respects your AQL sampling results too.
 

Bev D

Heretical Statistician
Staff member
Super Moderator
#5
First remember that the AQL is the ACCEPTABLE Quality Level or the defect rate that will be ACCEPTED by your supplier or your incoming inspection 95% of the time when it is present.


You may really want to specify the REJECTABLE Quality level or the defect rate that will be detected and REJECTED 95% of the time when it is present.

YOU should set the level for your supplier. What defect rate is ACCEPTABLE? what defect rate is NOT ACCEPTABLE?


As Jennifer suggested there are many excellent threads that have covered this topic in great detail - they are listed at the bottom of the page, OR you can perform a search on this site for more info. Many people find these past discussion to be useful in helping them focus their current questions for the forum.

A tool for exploring various sample plan options using both AQL and RQL is available here.
 
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