无铅锡膏熔点217度,有铅锡膏熔点183度,

对于为何要求设定的温度要比熔点高,是由于锡膏是有

厚度和有PCB焊盘连接,会有吸热或锡膏内部温度不足

而最终导致锡膏熔化不好,因此一般都要求比熔点高20~30

现在我司这边对于无铅的回流温度要求是235~255

                               有铅的回流温度要求是220~245度,

 

 

Thanks & Best Regards,

 PE  Jessy.Lai

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发件人: TGAsia [mailto:[log in to unmask]] 代表 lisa718zyd
发送时间: 2012613 12:00
收件人: [log in to unmask]
主题: [TGAsia] 回流温度设置

 

锡膏熔点是217度,为什么回流温度都要设置为250度呢,有最高和最低值之分吗?谢谢!

 

2012-06-13


lisa718zyd


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