焊線及焊線工藝介紹-wenkub
2023-03-17 04:39:13 本頁面
【正文】 through (typically Au to Au) C Ball bond L Test specimen Specimen clamp Bonding pad Pad metallization separates from underlying surface Residual pad on ball ballpad interface remains intact (E) Bond pad lifts Test specimen Specimen clamp C Ball bond L Bonding pad Bonding pad lifts, taking portion of underlying substrate material with it (F) Cratering Residual pad and substrate attached to ball,ballpad interface remains intact Shear Failure Modes Crater Test Calculate (I) UP Time = (Total Actual Production Times – Total Repair Time ) Total Actual Production Time DOWN TIME RATE= Total Repair Time Total Actual Production Times Total Operator Actual Repair Time Total Operator Repair Frequency Stoppages Total Actual Production Times – Total Operator Repair Time Total Operator Repair Frequency Stoppages Total Technical Actual Repair Times Total Technical Repair Frequency Stoppages MTTS (MEAN TIME TO STOP ) = MTBS (MEAN TIME BETWEEN STOP)= MTTA (MEAN TIME TO ASSISTANCE ) = Calculate (II) MTBA (Mean Time Between Assistance) = Total Actual Production Times – Total Technican Repair Times Total Technical Repair Frequency Stoppages MTBF(Mean Time Between Failure)= Total Actual Production Times – Total Technician Repair Time Total Change Parts Repair Frequency Stoppage 規(guī)格寬度 製程寬度 規(guī)格上限 規(guī)格下限 6 σ ( 公差 ) (上限 or 下限 ) 平均值 三個公差 CP ( 製程能力指標(biāo) ) = CPK = = Quality ? 正常品 ? Material Problem ? 1st Bond issue (Peeling , Ball Lift , Off Center) ? 2nd Bond issue (滑針，縫點脫， short tail ) ? Looping Fail (wire snake wire， sweep wire loop base bent ) 正常品 Material Problem With Ball Wire Pad Size Missing Ball Wire Broken Bonding Ball Inspection ? Ball Detection Ball Size Pad Center Ball Center Ball Placement (X,Y) Ball Off Pad Bonding Ball Inspection (cont.) ? Ball Measurement Peeling 1st Bond Fail ( I ) Ball Lift 1st Bond Fail (II) Ball Lift Neck Crack 1st Bond Fail ( III ) Off Center 1st Bond Fail (IV) Off Center Ball 1st Bond Fail (V) Smash Ball Smash Ball With Weld Wire Capillary Mark Missing Weld Wire Broken Lead Bonding Weld Inspection ? Weld Detection 2nd Bond Fail ( I ) 滑針 2nd Bond Fail ( II ) 縫點脫落 縫點脫落 Looping Fail(Wire Short I) Wire Sweep Wire Short Looping Fail(Wire Short II) Loop Base Bend Wire Short Looping Fail(Wire Short III) Excessive Loop Wire Short THE END ? 靜夜四無鄰，荒居舊業(yè)貧。 Ball Size = y?；蛑粋€ Die上
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