Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

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SMT electronics assembly manufacturing forum.


Drying after aqueous wash

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Merle

#43146

Drying after aqueous wash | 2 August, 2006

Should drying be done after aqueous wash? If so, how long and at what temperature?

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RDR

#43148

Drying after aqueous wash | 2 August, 2006

Well i guess you would not have to dry the boards but let me ask this, Are you hand cleaning water soluble flux in a sink? Never seen a cleaner without a dryer.

Anyway temp and time for drying is easy to figure out.

When boards are dry you have it!!! Do not run drying temps greater than 140/150 though, boards get to hot to handle. Dont expect larger connectors ot get dry with any cleaner in a reasonable amount of time

Russ

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Chunks

#43149

Drying after aqueous wash | 2 August, 2006

It depends on the water quality of your final rinse too. Too dirty and pools of water will trap residues on your board. If let to evaporate, these residues can stay on your board.

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Merle

#43170

Drying after aqueous wash | 3 August, 2006

The cleaner does have a dryer, but does not remove all moisture - we can see that. It is functioning - we can see that too.

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RDR

#43171

Drying after aqueous wash | 3 August, 2006

So what are your current drying parameters? can you adjust temp and time? is this a batch cleaner that may have some shadowing from the way it is loaded causing hot air to not hit certain boards?

Russ

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