log book
17/6/2018 Sunday
off day
18/6/2018 Monday
- assist engineer to take sample at failure lab
- inspect and analysis the unit and find the probabiility the cause of failure to happen.
Inspect unit from top view and side view -- to zoom in the defect--
19/6/2018 Tuesday
- assist process engineer to take sample from failure lab (FA LAB)
- inspect the defect unit and take the picture of the area of defect
Inspect unit from top view and side view à to zoom in the defect à
Issue: disturb wire-BIM 5A
Observation:
Possible root cause: lead frame scramble ,tilted lead
20/6/2018 Wednesday
sojt (on job training),study about wire clamp and flux contamination at capillary
21/6/2018 Thursday
- check the life time of capillary and plan the date to complete the analysis of different 2 bim of capillary contamination which is 6B and 8A.
22/6/2018 Friday
- assist engineer in failure analysis to get the data and the similar and different from the observation at the unit .
- Issue: broken wire
- Observation: has 2/5 has broken wire at the middle
- Possible root cause:
Then proceed the capillary project and get 5 data ,and also inform the process technician to follow up the project to get the data . 1.2 million touch down about 24 hours to get 5 data .
23/6/2018 Saturday
off day