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38 SMT Magazine • June 2017 zontal threshold: 100 µm; vertical threshold: 50 µm; and skew threshold: 40 µm. AOI test results are listed in Table 3. Both AOI System 5 and AOI System 6 have the very good defects detection percentage. It is noted that all the machine false call PPM are higher than our expectation which we wish is <5000 for false call PPM (parts per million). AOI System 1 data is for four of the five boards, and does not in- clude pad pitch 100 µm for three boards due to its limit capability. The data of AOI System 2, AOI System 4, AOI System 5 and AOI System 6 are from all five boards with all 03015 compo- nents. AOI System 4 may have significant im- provement with a new camera to be installed shortly. AOI System 2, AOI System 5 and AOI System 6 also have improvement steps in prog- ress. AOI System 3 will provide its testing results after making some progress. Conclusion Current AOI machines have different lev- els to test 03015 components; however, all AOI machines involved for this project used 2D AOI function as 3D algorithms were not usable due to component reflection. Attribute gage R&R results are acceptable for these five machines (AOI System 5 had excel- lent results). Based on the data which we have now, AOI System 5 has the best performance for Defect Escape %; however, no machine had false call PPM (parts per million) <5000. This study is just the beginning. More boards (with no reflection) are needed to test with the AOI machines, especially when using 3D algo- rithms. More improvements to the machines are coming from several of the AOI system R&D teams. SMT AOI CAPABILITIES STUDY WITH 03015 COMPONENTS Table 2: AOI Main Algorithm Threshold for AOI System 1, AOI System 2, AOI System 4, AOI System 5 and AOI. Table 3: AOI Testing Results for AOI System 1, AOI System 2, AOI System 4, AOI System 5 and AOI System 6.