[SOLVED] Product Engineering Question - SYL and SBL

[laiza]

Hello I have been ask a product engineering question and I want to check my answer.

I was given a series of good device yield
Good yield
90.43%
90.86%
94.79%
90.03%
96.00%
96.19%
95.02%
95.77%
94.80%
92.32%
95.41%
and Reject (example failing Continuity)
0.1%
0.1%
0.0%
0.1%
0.4%
0.3%
0.5%
0.7%
0.5%
0.8%

i was ask to determine the Yield Cut-off limit and the reject cut-off limit. Can I use SYL and SBL formula for this. Or is there any formula to do this??

Cheers!!!

 

[D.A.(Tony)Stewart]

yes you can choose 3 sigma, 4 sigma or 5 sigma limits depending on quality required.