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                                                                                                                                                                                                                                                                                                                                      邁威BGA激光植球機廠家:BGA植球方法有哪些?

                                                                                                                                                                                                                                                                                                                                      2022-07-20 10:18:29 責任編輯:邁威 0

                                                                                                                                                                                                                                                                                                                                        BGA植球的方法有哪些?今天邁威BGA激光植球機廠家就根據不同的形式給大家講講不同的方法:

                                                                                                                                                                                                                                                                                                                                       

                                                                                                                                                                                                                                                                                                                                        一、按操作主體,BGA植球分為機器植球和人工植球兩種方式

                                                                                                                                                                                                                                                                                                                                       

                                                                                                                                                                                                                                                                                                                                        機器植球只要是設定好程序后,BGA植球機就會自動完成BGA的植球。

                                                                                                                                                                                                                                                                                                                                       

                                                                                                                                                                                                                                                                                                                                        BGA植球機的優點:修復率高,節省人工成本,修復效率高,但缺點是:價格貴。

                                                                                                                                                                                                                                                                                                                                       

                                                                                                                                                                                                                                                                                                                                        人工植球主要依靠工人使用簡單的機器進行BGA植球

                                                                                                                                                                                                                                                                                                                                       

                                                                                                                                                                                                                                                                                                                                        這種植球方法的優點:主要是BGA價格便宜,就是返修效率低,返修良率低,人工成本高。

                                                                                                                                                                                                                                                                                                                                       

                                                                                                                                                                                                                                                                                                                                        二、植球的方式可以分為錫膏+錫球和助焊膏+錫球的方法

                                                                                                                                                                                                                                                                                                                                       

                                                                                                                                                                                                                                                                                                                                        當今業界流行的種植球的方法有兩種。一種是“焊膏”+“錫球”,另一種是“助焊膏”+“錫球”。

                                                                                                                                                                                                                                                                                                                                       

                                                                                                                                                                                                                                                                                                                                        “焊膏”+“錫球”的方法被公認為最好和最標準的植球法。用這種方法植出的球焊接性好,光澤好,熔錫過程不會出現跑球現像,較易控制并撐握.具體做法就是先用錫膏印刷到BGA的焊盤上,再在上面加上一定大小的錫球,這時錫膏起的作用就是粘住錫球,并在加溫的時候讓錫球的接觸面更大,使錫球的受熱更快更全面,這就使錫球熔錫后與BGA的焊盤焊接性更好,減少虛焊的可能性。

                                                                                                                                                                                                                                                                                                                                       

                                                                                                                                                                                                                                                                                                                                        “助焊膏”+“錫球”法是利用助焊膏來代替錫膏的作用,但助焊膏的特點和錫膏有很大的不同,助焊膏在溫度升高的時候會變成液狀,容易造成錫球亂跑;另外助焊膏的焊接性較差,所以說用第一種方法植球較理想。


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