Dear all:
    請教各位,我們公司有一產品,是螺絲穿過機殼固定,要求螺絲杆与機殼絕緣,計算電气間隙時,要用<<IPC-2221-表6.1導体電气間距>>里的B1-A7的那一個代碼才最接近啊.
謝謝!



Thanks&Best Regards!
QE/sharp_zhang(張鵬宇)
Tel:0769-87915950 Ext:36323

-----Original Message-----
From: TGAsia [mailto:[log in to unmask]]On Behalf Of [log in to unmask]
Sent: Wednesday, March 16, 2011 6:43 PM
To: [log in to unmask]
Subject: Re: [TGAsia] PCB板?油的表面附?力


Owen Zhou，您好！ 

　　 
将3M600#胶纸（宽12.5mm，长50mm）在线路图形表面上贴最少50mm长的胶带，挤走空气泡，在一分钟内，用手将胶带接近垂直板面扯起，胶带只用一次。目检胶带和样板测试区，来确定阻焊膜是否从基板或裸金属导体从样板上剥离、开裂或分层。若出现剥离、开裂或分层则评定该试样阻焊膜附着力不足。

======== 2011-03-16 13:30:19 您在来信中写道： ========

Hi, all:
 
下午好！
请问PCB板绿层的表面附着力的测试方法应采用什么标准？
其附着力的标准是多少？
谢谢！
 
Owen Zhou 

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= = = = = = = = = = = = = = = = = = = = = = 
　　　　　　　　致
礼！

　　　　　　　　　　　　　　孔亮/生产技术部
　　　　　　　　　　　　　　[log in to unmask]
　　　　　　　　　　　　　　　2011-03-16


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