Part drop after reflow

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Hi, I am having a issue that SMT nut drop after reflow. The... - Jun 26, 2020 by Indhu

Hi Indhu, It could be multiple reasons but probably one roo... - Jun 26, 2020 by Victor

Hi Victor, The part drop after the first side reflow itself... - Jun 27, 2020 by Indhu

Hi Indhu, Kindly check the data sheet of the part for Reflo... - Jun 27, 2020 by Srini

Hi Indhu, Check for solder paste height. Please manually ad... - Jun 27, 2020 by SMTA-Davandran SMTA

Indhu

#85096

Part drop after reflow | 26 June, 2020

Hi,

I am having a issue that SMT nut drop after reflow. The solder height all in specifications. Had tried adding flux inand the solder paste. But shows no improvement. Is the nut easily oxidize? Can anyone help me on this?

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Victor

#85098

Part drop after reflow | 26 June, 2020

Hi Indhu,

It could be multiple reasons but probably one root cause. metal nut might require reflow profile change- you need to check it with SMT reflow profiler. the part might be oxidized - you can check solderability or try to solder part using a hand heat gun.

does the part mount on the bottom side and drop off during second side reflow?

cheers, victor

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Indhu

#85105

Part drop after reflow | 27 June, 2020

Hi Victor,

The part drop after the first side reflow itself. The part seems like didn't catch solder.

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Srini

#85106

Part drop after reflow | 27 June, 2020