基板变形在IPC-610里面是有要求的，曲度要小于1.5%

 

 

 

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From: TGAsia [mailto:[log in to unmask]] On Behalf Of 傅小杰 (C.QC.AM&SE-製程檢驗)
Sent: Monday, September 17, 2012 9:22 AM
To: [log in to unmask]
Subject: Re: [TGAsia] 基板过波峰焊锡变形判定标准咨询

 

各位好！

  现有一问题向大家请教一下，PCBA过波峰焊锡后基板变形，IPC-A-610C找不到相关判定标准。

  对基板变形在多少弧度可允收不会对CHIP 元件产生不良？

  基板变形图示如附件

 以上请教诸位大仙。


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