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PCB Manufacturing

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PCB manufacturing consists of many steps, such as PCB CAM, Panelization, Copper patterning, etc. This group is mainly talked about the problems during PCB manufacturing!

Community > Groups > PCB Manufacturing > How long can flux be left on a PCB?
How long can flux be left on a PCB?
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William Reeve

I have put flux on a PCB to solder. Can I leave it overnight? Is that ok? Or how long can flux be on the board?
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Statement: This post is only the personal view of the author and does not represent the opinions of ALLPCB.com.

andrea.pirovano

Water-soluble Flux must be removed from the PCB as quickly as possible after soldering. So you cannot leave it overnight. The manufacturer of your Flux will have their recommendations in the data sheet.

hgp

My experience is that Kester Water soluble flux left on the PCB for more than 5 hours leads to the beginning of corrosion.

Basil

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