Electronics Forum | Tue Dec 26 10:54:37 EST 2006 | yusufgomec
We use hot air leveling (HAL) process in pcb production. HAL process is 3 steps. �n 1. step flux. 2. step is HAL. And 3. step is rinsing. As you know there is mustn't any flux after rinsing operation. Our flux chemical is water soluable. But there ar
Electronics Forum | Tue Aug 20 21:46:09 EDT 2002 | davef
Rinse => OSP Coat => Rinse => Dry Hot Air Solder Level: Preclean => Rinse => Flux Coat => Solder Coat => Hot Air Level => Cool => Soft Brush => Post Clean Rinse => Dry Look here http://www.epa.gov/opptintr/dfe/pubs/pwb/ctsasurf/download/pdf/ch2.pdf
Electronics Forum | Mon Apr 15 05:04:02 EDT 2002 | ianchan
On a more layman's terms (am not a expert), here goes : 1) resistivity of DI rinse must be greater than 10M-ohms (some say greater than 16M-ohm?), dunno what is the FIX industrial standard? 2) DI water rinse usually is the end zone rinse, before th
Electronics Forum | Wed Dec 27 20:33:50 EST 2006 | greg york
water alone especially cold is not good enough, how do you check for hasl fluids when most residues left behind after improper cleaning are non ionic. Use 40C saponifier followed by heated rinse then cold rinse then DI rinse followed by dry.Nylon bru
Electronics Forum | Thu Aug 25 12:34:48 EDT 2011 | rnkamal
Ryan, Another option to look at would be ultrasonic cleaning if your boards/process would allow it. Automated multi-tank models with wash, rinse and dry capability are available for larger throughput. Typically both wash and rinse tanks have ultra
Electronics Forum | Wed Nov 09 10:08:42 EST 2011 | julien
Hello all, We have an old batch cleaning machine in our production and we use isopropanol alcohol during the rinsing process probably to lower the surface tension. Right now we are looking for a new machine who can do a better job compare to the ol
Electronics Forum | Mon Dec 06 10:53:42 EST 1999 | Ron Lahat
Our CEM running No clean process on our PCBAs Should we verify that he is using the Deionized water rinsing or is it a default in the process ?
Electronics Forum | Sat Feb 05 21:58:08 EST 2000 | Stu Leech
I agree with all of the previous comments. 1) Here are a few things to keep in mind when cleaning with water. To effectively clean, any liquid must wet the surface. By itself, water has a surface tension of 70 dynes/square cm. This is relaively hig
Electronics Forum | Wed May 04 12:36:06 EDT 2005 | bschreiber
Hello Frank, Just a quick note regarding the use of your Smart Sonic Stencil Cleaning process for cleaning PCBs; if the boards are populated, some components my require an ultrasonic rinse with DI water as ultrasonics will deliver the wash solution
Electronics Forum | Fri Nov 24 10:03:08 EST 2006 | slthomas
"The fluid sometimes heats up to 105 deg F." Not sure what you mean here...is it set at 105 but rarely gets there, or is your temperature dependant upon another process to heat it up? Also, what temp is your rinse water? We used to use a U/S clean
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