Electronics Forum | Tue Dec 29 15:55:26 EST 1998 | James Lalicker
We use a inline water wash system to clean our PWA's. How low should i be able to let my DI water resistivity get before replacing the DI tanks. Is there a standard i can get on this subject. Thanks JL
Electronics Forum | Fri Jan 01 11:39:14 EST 1999 | Christopher Lampron
| We use a inline water wash system to clean our PWA's. How | low should i be able to let my DI water resistivity get before replacing the DI tanks. Is there a standard i can get on this subject. | | Thanks | JL | JL, I too have been looking for a
Electronics Forum | Tue Dec 29 23:37:09 EST 1998 | Mike Konrad
James, Most rental DI systems are as follows: Option #1: 2 mixed bed resin tanks: In this case, a 1 M-Ohm light should be installed on the output of tank #1, before tank #2. When the 1 M-Ohm light indicates that the output of the #1 tank is below
Electronics Forum | Wed Dec 30 10:27:04 EST 1998 | Scott McKee
| We use a inline water wash system to clean our PWA's. How | low should i be able to let my DI water resistivity get before replacing the DI tanks. Is there a standard i can get on this subject. | | Thanks | JL | You'll want to look at IPC-AC-62A
Electronics Forum | Tue Jun 05 22:59:18 EDT 2007 | davef
There is no standard. Companies select a lower control limit based on the desired cleanliness. Guidelines to consider are: * With fresh resin beds, expect get 17.5 mohm-cm water into the final rinse and then it decreases from there. * Semiconducto
Electronics Forum | Thu Nov 16 23:34:56 EST 2006 | mds33200
Hi, I am new in this industry and have purchased a beguinner unut, a 3-in-1 solder, desolder, hot air station. Currently I work on cellphone mainboards. At the moment I only replace single large chips on the mainboard. I would like to be able to repl
Electronics Forum | Fri Nov 17 14:42:06 EST 2006 | billwestiet
Mark, This is a big topic. Where are you located, it would probably be best to hook you up with someone in your area. Anyhow, lead or lead free should be based on whether the circuits are lead or lead free. I would guess that cell phones would all
Electronics Forum | Tue May 04 08:14:33 EDT 2010 | rgduval
Rinse them clean. Blow them out with some shop air. And let them dry in an oven for awhile.
Electronics Forum | Tue Aug 27 13:52:24 EDT 2002 | Mike Konrad
MK, In most cases, if the machine is completely closed-looped (prewash, wash, prerinse, rinse, final rinse etc), then the water should not require changing. As with most inline cleaners, there should be a considerable amount of water loss in the cl
Electronics Forum | Tue May 22 11:38:04 EDT 2012 | naynayno
I am looking for IPC or other published standards that specify cleanliness levels for: 1) solder paste stencils 2) selective solder pallets When we cleaned PCB's we used a limit of 4 M-ohms. Now that we have transitioned to No-Clean, I am wonderi
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