Return_On_Investment_Pre-reflow_AOI.pdf - 第3页
3 Appendix Exhibit 1. Percentage of defe ct distribution for world-class process quality (Reference: CyberOptics mar ket research) After solder paste 51% After placement 38% After reflow 9% Other 2% Def ect distribu tion…
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Cost of investment in pre-reflow AOI system
The losses from placement defects can be eliminated by placing an AOI system in the SMT line to ensure
that no bad product will escape from the placement process. However, the actual cost of investment in
the pre-reflow AOI system is very much dependent upon the price and performance of the system.
Exhibits 6 and 8 are comparison tables presenting the total cost of ownership of 3 different types of
commercial AOI systems in the above-mentioned European SMT manufacturer. Exhibits 7 and 9 are
comparison tables for above-mentioned Taiwanese SMT manufacturer. In both cases, CyberOptics’ AOI
system has the lowest cost of ownership, despite slightly higher initial cost than the lower cost Company
A system. These comparisons indicate that the following key parameters need to be considered for
selecting an AOI system to achieve minimum cost of ownership.
Equipment cost
Troubleshooting cost
Maintenance cost
Training cost
Programming cost
False call handling cost
Return on investment
Exhibits 10 and 11 present the ROI and payback period of 3 different types of commercial AOI systems in
European automobile SMT manufacturer and Taiwanese mobile device SMT manufacturer. ROI of the
CyberOptics AOI system used in Taiwanese mobile device company has the highest ROI of 414% with less
than 4 months of payback period, while the ROI of the B Company in European automobile company is
almost zero.
Conclusions
The potential gain from a pre-reflow AOI system is significant. However, there are critical features that
need to be considered to select an appropriate pre-reflow AOI system in various manufacturing
environments. Otherwise, the cost of ownership might be higher than the gain from defect prevention.
CyberOptics’ AOI system is designed to maximize return on investment for pre-reflow applications, and
outperforms both slightly lower and higher initial cost AOI competitive systems.
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Appendix
Exhibit 1. Percentage of defect distribution for world-class process quality
(Reference: CyberOptics market research)
After solder paste
51%
After placement
38%
After reflow
9%
Other
2%
Defect distribution for world-class process quality
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Exhibit 2. Raw data from a European SMT manufacturer