Improving First Pass Yields and SMT Line Utilization for ...
Improving First Pass Yields and SMT Line Utilization for
High Mix Low Volume Electronics Manufacturing
9/29/2015
CTEA
Optimal Electronics Corporation Austin, TX
Copyright ? 1998-2015 Optimal Electronics Corp., All Rights Reserved - Confidential
1
Electronics Assembly
? First Pass Yield
? Common issues ? Example improvement solutions ? Measuring first pass yield
? SMT Line Utilization
? Common challenges ? Example improvement solutions ? Measuring downtime and SMT OEE
9/29/2015
Copyright ? 1998-2015 Optimal Electronics Corp., All Rights Reserved - Confidential
2
What is your First Pass Yield %?
? 98% ? 95% ? 92% ? 89% ?...
9/29/2015
Copyright ? 1998-2015 Optimal Electronics Corp., All Rights Reserved - Confidential
3
What is your First Pass Yield %?
Context of First Pass Yield
? First time NPI builds ? Production builds ? initial run versus re-occurring ? Assembly complexity ? Measurement point
? SMT line versus ? Post SMT assembly
9/29/2015
Copyright ? 1998-2015 Optimal Electronics Corp., All Rights Reserved - Confidential
4
First Pass Yield Variables
Materials
? Components miss-labeled ? Wrong parts placed ? kitting, wrong reel on feeder ? Miss-match part rotation on reel and SMT placement program ? Non-approved part manufacturer for assembly ? Mixed vendors for "no-mix" parts ? Expired moisture sensitive parts ? Incorrect PWB ? Forgot to insert handplace parts
9/29/2015
Copyright ? 1998-2015 Optimal Electronics Corp., All Rights Reserved - Confidential
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