Electronics Forum: no solder fillets (Page 5 of 66)

Re: no tru-hole on wave

Electronics Forum | Mon Aug 28 15:34:19 EDT 2000 | Steve Harshbarger

Hello Ramon, This is a very common problem that usually can be overcome. Can you tell me the flux type you are using (manufacturer, and flux number)? Has your board vendor, or type of PCB's changed (are they entec coated - bare copper)? What is t

Re: no tru-hole on wave

Electronics Forum | Wed Aug 30 09:56:37 EDT 2000 | NLykus

Hi Ramon, We have had this problem before on our Seho Wave Solder Machine. We are currently using a spray fluxer as well. By imersing the PCB into the flux you stated you are getting good results. What you need to do is check your spray patter

RF applications..aqueos vs. no clean..HELP!!!!

Electronics Forum | Wed Mar 24 10:43:59 EST 1999 | Tim

Hi, I have a customer who's electronic assemblies produce RF. He is insisting upon aqueuos cleaning. We switched to a no clean solder years ago and no longer have an aqueous system. Is aqueous cleaning necessary to eliminate 'cross talk' of the s

cleaning of no clean flux

Electronics Forum | Wed Aug 10 08:10:39 EDT 2005 | davef

Comments are: * Sounds like it's necessary to clean "heareous F381, F352 no clean solder paste" in your application. Consider a paste that may be better suited to your application. * If you're cleaning "low residue flux", consider using an organic ac

Gold plated board, with csp's and 0603 with no clean apetures

Electronics Forum | Thu Sep 26 20:43:51 EDT 2002 | davef

"OK. If the connection doesn't look like I expect it to look, how do I know that the metallurgy is correct?" Comments are: * There are no pictures that will get you though this. * You should expect that gold that is dissolved in Pb/Sn solder to make

no clean flux + wave soldering issue

Electronics Forum | Tue Sep 02 14:59:41 EDT 2008 | hermes

if two boards with different solder masks give different results on flux residue level after soldering with the exact same machine settings than it is clear that one of the solder masks is not compatible with your no-clean flux. could be the solder m

no clean flux + wave soldering issue

Electronics Forum | Fri Sep 05 13:49:04 EDT 2008 | gregoryyork

Tell the board shop to increase the cure temp of the resist as it is undecured especially if you have waxy/greasy resiues on the board and a brown tar like substence in the solder wave itself. If undercured then solder will not flow off the resist pr

no clean flux + wave soldering issue

Electronics Forum | Thu Aug 28 11:02:28 EDT 2008 | omid_juve

we have two similar pcb from two different pcb manufacturer one of them passed the wave soldering without any short circuit and residue and another one passed it with many residue . don`t you think that the type of solder mask from these two pcb manu

no clean flux + wave soldering issue

Electronics Forum | Wed Aug 27 14:58:21 EDT 2008 | omid_juve

we have problem in setting the density of a no clean flux for using before wave soldering . first we dilute the flux but we have many short circuit problem between the pads of edge connector,then we densify the flux all the short circuit is removed b

no clean flux + wave soldering issue

Electronics Forum | Thu Aug 28 11:31:17 EDT 2008 | patrickbruneel

Matt solder mask finishes gives the widest process window in view of potential amount of residues when using No-Clean. Shiny (glass like) finishes are more sensitive to residues due to lower surface area compared to matt finish. If the shiny finish i

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