Electronics Forum: acetate and contamination (Page 7 of 10)

Re: Cracking Capacitors and Solder Balls

Electronics Forum | Tue Jun 16 15:00:12 EDT 1998 | Gary Simbulan

There are some common reason for capacitor cracking on my web page if you want to have a look. The document can be downloaded for your reference. | Earl, et al, | Boy things get old and cold around here fast. I promised more detail on my capactior

Re: Cracking Capacitors and Solder Balls

Electronics Forum | Mon Jun 08 14:52:16 EDT 1998 | Gary Simbulan

| Earl, et al, | Boy things get old and cold around here fast. I promised more detail on my capactior problem and I thought I could drop something completely different in the same message and tell a tale of solder balls. | First the caps. We stil

Omegameter 500 information and possible replacement (ROSE Testing)

Electronics Forum | Thu Jun 08 16:40:08 EDT 2017 | sumote

I have used one (actually 2) of these machines. The upside is you can point to the print-out and tell your customers that you do test for cleanliness, and you pass. The reality of this test is that it tests for exactly 1 type of contamination. The

Contamination/process issues of SMT and wave soldered pcb's

Electronics Forum | Thu Jul 03 17:42:01 EDT 2003 | Kris

What have you not seen ?

Leaded and Lead Free BGA's on hte same board

Electronics Forum | Thu May 01 14:25:31 EDT 2008 | ck_the_flip

Most white papers, like this one http://members.ipc.org/ipclogin/ipcmembers/IPC/Route/0706/0706techpaper.pdf, have written that lead contamination in a lead-free solder joint leads to all sorts of reliability problems. Consensus is that, if the cont

Need help on PCBA Cleanliness Standards and Specs

Electronics Forum | Tue Nov 25 16:26:43 EST 2003 | tdurston

We are trying to establish requirements and process controls for completed, cleaned SMT assemblies. We have problems with our high impedance circuits (100 meg ohms) being affected by residue. Some boards require additional cleaning cycles to remove

Re: Quantity of dross and type of flux

Electronics Forum | Tue Nov 14 22:01:07 EST 2000 | Dave F

I'd love to get to the point that I could discuss the impact of flux on dross formation. Until then, I fight with proper solder pot temperature, maintaining enough pump speed, and solder contaminants.

Contamination/process issues of SMT and wave soldered pcb's

Electronics Forum | Thu Jul 03 07:59:53 EDT 2003 | loz

OK. Point taken, lets keep this simple then, how about just the issue of under cured solder resist? Any body else encountered such issues. Just feedback, 'cause its something that just seems to have been highlighted to me. Thanks.

Contamination/process issues of SMT and wave soldered pcb's

Electronics Forum | Thu Jul 03 11:32:38 EDT 2003 | dphilbrick

It might be easier to answer what we haven�t seen. In today�s economy everyone is looking for a deal. Just remember "there is no sex in the Champaign Room"

Leaded and Lead Free BGA's on hte same board

Electronics Forum | Thu May 01 21:17:38 EDT 2008 | davef

The concern about lead contamination of lead-free solder has to with zone refining. For more, look here: http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=30315


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