Page 23 - mlcc-170613
P. 23

MULTILAYER CERAMIC CAPACITORS

                           溫度                                      波峰焊爐  焊錫條件(建議)
                    Temperature (℃)                                Wave ( Flow ) Soldering Condition
                                  250
                                                                                        220 ~250℃(Max 270℃)
                                  200      Pre-Heating    ΔT                Soldering
                                                                                                                                keeping at room
                                  150                                                                                              temp.

                                  100

                                    50

                                      0

                                                    2~3 minutes                  5 sec. max.            Gradual cooling
                                                  (Preheat chips before soldering  ΔT; maximum 150℃/T=100℃  )

           9.2 自動貼片注意事項  (Consideration for automatic placement)

          機器上板子貼片調整(Adjustment of mounting machine)
          1. 當電容上 PC 板時不能施加過大的外力於電容上
            Excessive impact load should not be imposed on the capacitors when mounting onto the PC boards.

          2. 爬錫過程中,支撐物必須恰當並定期檢查確認
            The maintenance and inspection of the mountings should be conducted periodically.

                               不正確的(Not recommended)                正確的(Recommended)

                                                                     Cracks

               單面板爬錫
              (Single-sided
               Mounting)



                                                                  Supporting pin  ↗


                                                                   Crack


               雙面板爬錫
              Double-sided
               Mounting


                                                       ↖                ↑                               ↗
                               Solder peeling                cracks         Supporting pin







                                                                                                          - 23 -
          (2016/08/10 revised)
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