Electronics Forum: mis-screened pcbs cleaning (Page 1 of 22)

baking out pcbs after reflow process

Electronics Forum | Fri Jul 06 10:35:32 EDT 2012 | ashworth14

All i used to do was blow them with an airline to remove the excess moisture then bake them for 15/20 min at 100' in an oven and that seems to work fine, i did get the info from a 4 stage cleaning guide for the actual cleaning solution we used but it

baking out pcbs after reflow process

Electronics Forum | Thu Jul 12 02:15:53 EDT 2012 | thmeier

Check also the specs / recommendations of your PCB manufacturer. We bake boards 4h/120°C before reflow and after automated cleaning (it´s not FR4!) and also if we have to rework with the autometd rework- stations (massive IR underheating ,..). Regar

baking out pcbs after reflow process

Electronics Forum | Fri Jul 13 08:03:54 EDT 2012 | cobham1

I appreciate all the feedback. The reason I was asking the question is because we have an internal documnet that states we need to bake for 16 hours after the boards are cleaned. This just seemed to long for what little moisture is really removed. I

baking out pcbs after reflow process

Electronics Forum | Thu Jul 05 11:26:08 EDT 2012 | cobham1

I need help with how long do I need to bake out double sided PCB's that have been cleaned. The units will not be reworked but instead will be moved on to hand stuffing. I have looked in IPC CH-65B and J-STD-033C. I get information for parts if I am r

Re: silver finishes on pcbs - what about the wave?

Electronics Forum | Fri Dec 15 03:35:10 EST 2000 | JohnW

Dave...think you've gone off on one again..., but if you want th secret family recipe for Haggis let me know....actually catch one 1st then I'll tell you how to cook it! Ok so we've got mixed opinion's on the silver then, and mostly based round SMD.

UltraSonic cleaning machine

Electronics Forum | Wed Sep 25 10:22:21 EDT 2002 | matt2138

UltraSonic cleaners do a good job of cleaning both stencils and misprint PCBs. Make sure the frequency that the machine comes set to is ok to use with both stencils and misprint PCBs. If you are a CM make sure your customers are ok with using the ul

UltraSonic cleaning machine

Electronics Forum | Wed Sep 25 15:58:36 EDT 2002 | bschreiber

Hello Dave, I hope that electronic slap didn�t hurt too much. Robf, I am sorry that you did not agree with my initial response, but the answer is very detailed and most of the support material I have is only in paper format so I need to either snai

Disposal of ultrasonic cleaning water

Electronics Forum | Tue Jun 24 14:47:25 EDT 2008 | bschreiber

There is also an article in the March 2007 issue of U.S. Tech magazine that reviews ultrasonic cleaning technology for PCBs titled "Reducing the Cost of Misprinted PCBs". The information is also relevant to post reflowed PCBs. A PDF copy of the art

cleaning of no clean flux

Electronics Forum | Wed Aug 10 08:53:45 EDT 2005 | jh0n!

Wasn't aware of that. We're using a no-clean with RF pcbs, and that's something to bear in mind for the future - thanks.

Re: stencil cleaning 'technology' ..

Electronics Forum | Wed Aug 16 12:43:04 EDT 2000 | genglish

Recently I completed a process evaluation on various stencil / misprinted PCB cleaning systems. They were both ultrasonic (theoretically can damage PCB�s) and the more conventional method of high pressure rotary bar method. I found that the best sys

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