解决立碑，请使用熔点温度范围宽点的焊膏，一般共晶焊膏立碑概率多些。









                                                                           

             "zhidon                                                       

             g.chen"                                                       

             <zhidon                                                收件人 

             g.chen@         [log in to unmask]                                

             HOLLEY.                                                  抄送 

             CN>                                                           

             发件人:                                                  主题 

             TGAsia          [TGAsia] 关于元器件立碑问题，请教各位         

             <TGAsia                                                       

             @ipc.or                                                       

             g>                                                            

                                                                           

                                                                           

             2008-12                                                       

             -24                                                           

             09:29                                                         

                                                                           

                                                                           

             请答复                                                        

               给                                                          

              Asia                                                         

             Committ                                                       

             e Task                                                        

              Group                                                        

              Forum                                                        

             <TGAsia                                                       

             @IPC.OR                                                       

             G>; 请                                                        

             答复 给                                                       

             "zhidon                                                       

             g.chen"                                                       

             <zhidon                                                       

             g.chen@                                                       

             HOLLEY.                                                       

               CN>                                                         

                                                                           

                                                                           









各位：圣诞节好！

　　近期本公司更换锡膏后，发现０６０３器件在PCB边上，出现立碑现象增多，想请

教：立碑导致的原因，与锡膏影响大还是与温度曲线影响大？谢谢！

　　　　　　　陈智东



2008-12-24



zhidong.chen



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