请看下IPC-610E 10-42 助焊剂的残留物还不应该潮湿有粘性或过多的助焊剂残留。
你这个应该有粘性吧？
 
 
From: TGAsia [mailto:[log in to unmask]] On Behalf Of Sammi Shi
Sent: Tuesday, June 05, 2012 3:25 PM
To: [log in to unmask]
Subject: [TGAsia] 转发: 关于10.6.1---清洁度（助焊剂残留物）的判定

大家好!

关于PCBA的助焊剂残留物的清洁度，有一个问题请教一下。

IPC-610E中定义如下：

 

注3与可接受等级的判定不知如何理解？假如生产中使用的免洗助焊剂，焊锡后的助焊剂残留物需要清洗吗？

举个例子：附件图片中的蓝色零件使用alpha SAC305(免清洗型)锡丝手工焊接于PCB上，焊后有图片中红色圈内的助焊剂残留物。

请问圈内的助焊剂残留物外观上可接受吗？

 

请帮忙解答，非常感谢！

 


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