因為現在很多BGA封裝都是PBGA (Plastic Ball Grid Array) ,它們使用環氧樹脂材料來封裝其外型,而載板則使用BT樹脂或ABF (Ajinomoto Build-up Film) 當基材,這些基材的Tg值都不會超過200°C,而現在無鉛的回焊區溫度一般都在220°C以上,也就是說回焊時PBGA可能出現軟化,如果再加上本體溫度分佈不均勻就非常容易發生變形翹曲,最終造成HoP/HIP焊錫不良。
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ball grid array 在 電子製造,工作狂人 Facebook 的最讚貼文
This is not the first time that Working-Bear be challenged the soldering problem from R&D once the NPI run found any components has solder crack. Our RD always came to me and challenged why EMS can’t make thing right to guarantee the solderability. Some RD even ask me need to increase the solder paste volume to improve the soldering strength. It is really enough!
ball grid array 在 電子製造,工作狂人 Facebook 的最佳貼文
Is that possible both solder joint bridging and open solder joint defect happen at same BGA (Ball Grid Array) or CSP (Chip Scale Package) device?
ball grid array 在 A ball grid array (BGA) is a type of surface-mount packaging (a ... 的推薦與評價
A ball grid array (BGA) is a type of surface-mount packaging (a chip carrier) used for integrated circuits. BGA packages are used to ... ... <看更多>
ball grid array 在 What is BGA Package? | PCB Knowledge 的推薦與評價
BGA is short for Ball Grid Array. It changes the original J-leads on a dual in-line package or gull-wing leads on the flat package to solder ... ... <看更多>