2BacktoBackBGAAssemblyandReworkCapabilityD

BacktoBackBGAAssemblyandReworkCapabilityDemonstration12/27/2014MarkElkinsRonMalickBelowisthecomponentlayout--U30isontopandinfaintredisthemirroredlocU312/27/20142Bottomsideprofile2/27/20143KohYoungsolderpasteinspectionbottomsidedata•LocVolumeHeightArea•U31108.64255.52579298.77802•U33140.32016.51274107.91•U35123.83095.865438105.8048•U35123.83095.865438105.8048•U37110.40855.65359498.023252/27/20144U31U33U35U371STBRD0.04390.04680.04320.04340.04480.04450.04470.04640.0450.04010.04330.03990.04350.03960.04410.04132NDBRDMEASUREHEIGHTOF4CORNERSFROMPCB2/27/201450.04330.04330.04420.04170.0420.04310.04330.04150.04360.04290.04380.04210.04370.04280.04220.0414ComponentsweremeasuredusingtheOGP.Eachcornerwasmeasuredfromthecardsurfaceas“0”.Voidingcriteria2/27/20146U31Bottomside1stpassonlyVoidingmeasurements2/27/20147BallClassificationXYArea(sqmils)Diameter(mils)CompactnessRoughnessVoidsVoiding(%)LargestVoid(%)1Passed5051110.440.71.161.0522.32.22Passed3771130.450.81.191.0715.55.53Passed2471140.430.71.221.0855.32.84Passed5052370.450.81.181.0623.33.25Passed3772390.450.81.171.0615.15.16Passed2492410.410.71.161.0640.50.27Passed3783670.450.81.191.0623.11.98Passed5053660.440.71.171.0644.93.59Passed2533660.440.71.261.0983.42.510Passed5054890.420.71.181.06221.911Passed2544900.410.71.191.0632.81.812Passed3794910.430.71.211.0753.11.6U33Bottomside1stpassonlyVoidingmeasurements2/27/20148BallClassificationXYArea(sqmils)Diameter(mils)CompactnessRoughnessVoidsVoiding(%)LargestVoid(%)1Passed3801140.450.81.231.0861.30.52Passed2481140.430.71.241.0822.92.83Passed5121160.430.71.241.0950.80.34Passed3822450.460.81.171.0522.82.75Passed5122460.460.81.171.0548.27.86Passed2482460.440.81.21.0760.70.37Passed2493750.450.81.181.06465.48Passed3803770.460.81.211.0726.169Passed5103770.440.71.181.0650.80.310Passed2505020.420.71.211.0731.61.311Passed3805040.430.71.191.0630.50.312Passed5085030.420.71.221.0731.40.9passonlyTopsideprofile2/27/20149LOCVolumeHeightAreaU30122.11595.568969109.7278U32115.19815.464875105.4172U34116.46785.450844106.8931U36134.18355.407867106.4547KohYoungsolderpasteinspectionTopsidedata2/27/201410BOARD1TOPSIDEU32U34U36U300.04520.04480.04450.04390.04470.04490.04400.04380.04500.04520.04400.04420.04510.04490.04440.0444BOARD2MEASUREHEIGHTOF4CORNERSFROMPCB2/27/201411BOARD20.04410.04340.04280.04270.04400.04380.04270.04300.04400.04360.04310.04370.04420.04360.04330.0436ComponentsweremeasuredusingtheOGP.Eachcornerwasmeasuredfromthecardsurfaceas“0”.BallClassificationXYVoidsVoiding(%)LargestVoid(%)1Passed24029729.58.92Passed18835634.12U30topsidevoidinGreen2/27/201412BallClassificationXYVoidsVoiding(%)LargestVoid(%)1Passed35218114.34.32Passed24229917.97.93Passed18835826.56.2TopsidevoidingreenlocationU322/27/201413U31bottomsideaftertopsidelargerballisU31BallClassificationXYVoidsVoiding(%)LargestVoid(%)1Passed29518629.59.32Passed36224615.15.13Passed42730531.40.92/27/201414BallClassificationXYVoidsVoiding(%)LargestVoid(%)1Passed28817926.56.32Passed35323914.64.63Passed42130026.66.4U37bottomsideaftertopsidelargerballisU372/27/201415BottomsideheightchangeaftersecondpassreflowU37U331ST2NDDIFF1ST2NDDIFFT90.04340.0428-0.00060.04680.0470.0002T10.04640.046-0.00040.04450.04560.0011A10.03990.04430.00140.04010.04410.0004A90.04130.0408-0.00050.03960.04220.0016BRD2T90.04170.04220.00050.04330.04380.0005T10.04150.04250.00070.04310.04360.0005A10.04210.04280.00070.04290.04350.00062/27/201416A90.04140.04250.00110.04280.04350.0007U35U311ST2NDDIFF1ST2NDDIFFT90.04320.04390.00070.04390.0434-0.0005T10.04470.04520.00050.04480.0441-0.0007A10.04330.04390.00060.0450.044-0.001A90.04410.04520.00110.04350.04370.0002BRD2T90.04420.044200.04330.04360.0003T10.04330.04340.00010.0420.04240.0004A10.04380.04410.00030.04360.04370.0001A90.04220.04280.00060.04370.04390.0002ThefollowingpagesshowtheBacktoBackBGAreworkCapabilitiesofCharlotte2/27/201417SRTREWORKPROFILETc3toppcbTc4U30Tc5U34Tc6U362/27/201418Tc6U36Tc7U37Tc8U32ProfilewasdevelopedatlocationU36U33reworkedVoidingmeasurements2/27/201419BallClassificationXYArea(sqmils)Diameter(mils)CompactnessRoughnessVoidsVoiding(%)LargestVoid(%)1Passed2001421.071.21.251.09124.23.12Passed3931481.061.21.221.08832.13Passed5781501.121.21.831.15932.24Passed1892961.091.21.261.09521.85Passed3853041.121.21.281.142.71.46Passed5813101.11.21.251.0971.10.57Passed1824581.131.21.241.09122.31.18Passed3794661.171.21.321.1186.85.79Passed5774711.161.21.251.0986.34.1U34afterreworkofU33Voidingmeasurements2/27/201420BallClassificationXYArea(sqmils)Diameter(mils)CompactnessRoughnessVoidsVoiding(%)LargestVoid(%)1Passed2121670.8211.341.1271.20.62Passed3901720.921.11.41.1571.613Passed5641790.91.11.361.1470.50.24Passed2023120.8511.381.1420.105Passed3843190.911.11.31.1130.80.66Passed5673230.891.11.411.1530.90.97Passed1974620.8111.421.1640.30.18Passed3814690.8411.331.1240.40.29Passed5604740.7811.411.1570.50.1U36reworkVoidingmeasurements2/27/201421BallClassificationXYArea(sqmils)Diameter(mils)CompactnessRoughnessVoidsVoiding(%)LargestVoid(%)1Passed1911560.8411.341.1252.41.82Passed368