您好!
    看到图片了,感到内部已经有压过的折痕或裂纹,问题肯定存在,需要加工处解决。
    我手头IPC标准不在,感到IPC标准中有解剖的检查,检查焊盘过孔疏松问题,这个方面检查会发现问题。
    至于能否使用和放行,要根据您产品的影响有多大。不确定的话,我以前的经验是做整机试验来评估影响。
    初步建议,供参考!
         陈智东
----- Original Message -----
From: [log in to unmask] href="mailto:[log in to unmask]">Richie Wang
To: [log in to unmask] href="mailto:[log in to unmask]">'zhidong.chen' ; [log in to unmask] href="mailto:[log in to unmask]">'Asia Committe Task Group Forum'
Sent: Thursday, April 14, 2011 4:49 PM
Subject: 答复: [TGAsia] PCB上铆钉的周围呈现微裂纹

Okay!

No problem!

 


发件人: zhidong.chen [mailto:[log in to unmask]]
发送时间: 2011年4月14 15:58
收件人: Asia Committe Task Group Forum; Richie Wang
主题: Re: [TGAsia] PCB上铆钉的周围呈现微裂纹

 

您好!

    图片看不清楚,能否直接附照片,让我学习下,谢谢!

              陈智东

----- Original Message -----

From: [log in to unmask] href="mailto:[log in to unmask]">Richie Wang

To: [log in to unmask] href="mailto:[log in to unmask]">[log in to unmask]

Sent: Thursday, April 14, 2011 3:42 PM

Subject: [TGAsia] PCB上铆钉的周围呈现微裂纹

 

各位前辈:

请教一个问题,是否有一个较为准确的定义和标准针对以下这个情况是否可以接受,PCB板上压铆钉的周围呈现微裂纹是否可以接受。谢谢!

 

 

整个PCB板图

 

Richie Wang


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