Matches in SemOpenAlex for { <https://semopenalex.org/work/W2032949086> ?p ?o ?g. }
Showing items 1 to 55 of
55
with 100 items per page.
- W2032949086 abstract "Recently, a serious crack issue for a commercial BGA has taken place frequently in the normal PCBA assembly line, which has lead to abnormal failure rate spikes in the first pass yield trend chart, and caused line down issue already. Both cross section and Dye & Pry has been carried out to find out the fracture mode in the suspected pin of the failed unit. The cross section result shows that both BGA solder separation and PCB prepreg separation occurs there. Dye & Pry reveals that the crack pins mainly gather at corner “D” of this BGA, and 100% dye is presented there. In order to find out the root cause of this case, a series of destructive experiments have been carried out. Firstly, shear test of the raw BGA solder joint are performed. It reveals that there is no obvious difference for the solder strength between the BGA balls at the four corners and those in the center area, which indicates that the BGA raw material is not related to the root cause of this case. Secondly, in order to identify the point at which the ball crack are starting in production line, samples including bare PCB and assembled PCBA have been collected at different work station in both SMT and product build line, which will all act as the experiment specimens for a series of cross section and Dye & Pry of next step. The results show that the FCT (Functional Circuit Test) after SMT line is one of the suspected stations where the solder crack initiation will take place. After that, Strain gauge has been performed to check in both these locations, and the results show that the strain value is out of spec. Finally, some idle probes under BGA in FCT is suggested to be the root cause to trigger solder crack initiation, and both cross section and Dye & Pry result proves that the BGA crack issue can be solved after removing those probes." @default.
- W2032949086 created "2016-06-24" @default.
- W2032949086 creator A5002587033 @default.
- W2032949086 creator A5013505859 @default.
- W2032949086 creator A5024827632 @default.
- W2032949086 creator A5036089810 @default.
- W2032949086 date "2011-10-01" @default.
- W2032949086 modified "2023-09-27" @default.
- W2032949086 title "Investigation of BGA crack issue in normal production line" @default.
- W2032949086 doi "https://doi.org/10.1109/isapm.2011.6105707" @default.
- W2032949086 hasPublicationYear "2011" @default.
- W2032949086 type Work @default.
- W2032949086 sameAs 2032949086 @default.
- W2032949086 citedByCount "1" @default.
- W2032949086 countsByYear W20329490862022 @default.
- W2032949086 crossrefType "proceedings-article" @default.
- W2032949086 hasAuthorship W2032949086A5002587033 @default.
- W2032949086 hasAuthorship W2032949086A5013505859 @default.
- W2032949086 hasAuthorship W2032949086A5024827632 @default.
- W2032949086 hasAuthorship W2032949086A5036089810 @default.
- W2032949086 hasConcept C127413603 @default.
- W2032949086 hasConcept C159985019 @default.
- W2032949086 hasConcept C192562407 @default.
- W2032949086 hasConcept C2776584680 @default.
- W2032949086 hasConcept C50296614 @default.
- W2032949086 hasConcept C66938386 @default.
- W2032949086 hasConcept C78519656 @default.
- W2032949086 hasConcept C94709252 @default.
- W2032949086 hasConcept C99862985 @default.
- W2032949086 hasConceptScore W2032949086C127413603 @default.
- W2032949086 hasConceptScore W2032949086C159985019 @default.
- W2032949086 hasConceptScore W2032949086C192562407 @default.
- W2032949086 hasConceptScore W2032949086C2776584680 @default.
- W2032949086 hasConceptScore W2032949086C50296614 @default.
- W2032949086 hasConceptScore W2032949086C66938386 @default.
- W2032949086 hasConceptScore W2032949086C78519656 @default.
- W2032949086 hasConceptScore W2032949086C94709252 @default.
- W2032949086 hasConceptScore W2032949086C99862985 @default.
- W2032949086 hasLocation W20329490861 @default.
- W2032949086 hasOpenAccess W2032949086 @default.
- W2032949086 hasPrimaryLocation W20329490861 @default.
- W2032949086 hasRelatedWork W1963529503 @default.
- W2032949086 hasRelatedWork W1973878436 @default.
- W2032949086 hasRelatedWork W1978595525 @default.
- W2032949086 hasRelatedWork W2029429059 @default.
- W2032949086 hasRelatedWork W2032949086 @default.
- W2032949086 hasRelatedWork W2064417751 @default.
- W2032949086 hasRelatedWork W2100223499 @default.
- W2032949086 hasRelatedWork W2162638227 @default.
- W2032949086 hasRelatedWork W3175218821 @default.
- W2032949086 hasRelatedWork W2189089899 @default.
- W2032949086 isParatext "false" @default.
- W2032949086 isRetracted "false" @default.
- W2032949086 magId "2032949086" @default.
- W2032949086 workType "article" @default.