你好,补充下PIN的直径大概是0.65mm,PCB板直径为0.8mm
 


发件人: <[log in to unmask]>
收件人: <[log in to unmask]>, <[log in to unmask]>
日期: 2012-06-06 10:57
主题: 回覆: [TGAsia] 请教,焊锡引脚上有空洞的原因及判定基准





請問孔徑比是多少?告知PIN直徑和PCB板孔徑。
 

Best Regards
寄件者: TGAsia [mailto:[log in to unmask]] 代理 Bohao Zhou
寄件日期:
2012年6月6日 10:10
收件者:
[log in to unmask]
主旨:
[TGAsia] 请教,焊锡引脚上有空洞的原因及判定基准

 

请教各位专家一个问题
:
基板在过完波峰焊以后
,焊锡引脚上会发生空洞.
附照片
:

请问产生空洞的原因会有哪些呢
?另外IPC中有没有关于这方面的判定基准呢?

______________________________________________________________________
This email has been scanned by the Symantec Email Security.cloud service.
For more information please contact helpdesk at x2960 or
[log in to unmask]
______________________________________________________________________



______________________________________________________________________
This email has been scanned by the Symantec Email Security.cloud service.
For more information please contact helpdesk at x2960 or [log in to unmask]
______________________________________________________________________