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LMR14030过波峰焊发现输出不正常的问题

Other Parts Discussed in Thread: LMR14030

Hi :

             工程师最近在使用LMR14030出现以下问题:过了波峰焊后,发现10块PCB板子有7块板子的输出电压不正常,如下是原理图,还有炉温温度的示意图,

请帮忙看看是否是炉温不合适使得LMR14030的失效率较高,谢谢!