Electronics Forum | Thu Sep 07 14:31:29 EDT 2006 | C.K.
I just converted our waves from an old alcohol-based flux to a new VOC-Free Water-based flux. The results have been startling. However, the ladies at post-wave inspection are complaining that the solder joints are too shiny, and it hurts their eyes
Electronics Forum | Fri Sep 08 11:32:19 EDT 2006 | darburch
Solder joint too shiny, clock wrong color, she's got my chair, radio too loud, can't hear the radio, I'm too hot she's too cold change the A/C.Kindergarten wasn't this petty.OH, wait this is a heath and safety issue, I need the day off with pay. Why
Electronics Forum | Mon Sep 25 23:09:24 EDT 2006 | Chris G
I would suggest an Electrovert EPK Plus. It is cheap, easy to maintain, and Electrovert provides good support. You can get a refurbished lead free EPK for less than 50k. They usually come with USI spray fluxers, which is a pretty good thing, and c
Electronics Forum | Wed Oct 11 15:40:34 EDT 2006 | Steve Gregory
Don't think there's any easy way to clean under a LCC, but you might want to consider this: http://www.winslowautomation.com/ccmd.asp A dead simple way to mount solder columns onto LCC's and then solder the part to the PCB with a stand-off of abou
Electronics Forum | Wed Oct 04 11:36:06 EDT 2006 | flipit
Hi, Anyone ever have an issue with stray capacitance when using no clean solder paste. We are having a timing problem on one product. The problem goes away when we clean the assemblies. We use a no clean process normally. These assemblies worked
Electronics Forum | Wed Oct 04 14:48:49 EDT 2006 | cw
My soak at 150C - 180C for approx. 85sec to 100sec. I believe this is sufficient. I can't change my paste because customer wants to use SnPb paste with SAC solder balls. They claimed that they have sucessful result with other CM. I need to know if
Electronics Forum | Fri Jan 12 12:35:58 EST 2007 | realchunks
Several things to check. Are you reflowing towards higher temps for the no-lead parts? If so are you using a 63/37 paste? If so you are buring your flux off too early. Get a solder paste designed for lead free parts on a leaded baord. There are
Electronics Forum | Mon Oct 09 10:58:26 EDT 2006 | Matt Smith
Over the past several months we have experienced intermittent problems with wave solder voids on PCBs coated with OSP. We suspect variation in the OSP application process, or oxidation of the surface due to insufficient or degraded OSP. Is there a me
Electronics Forum | Wed Nov 01 07:41:39 EST 2006 | billyd
I'm reworking lead free BGAs now, on a Conceptronics Freedom 3000. I use flux only (no-clean, Indium) all the time, with no issues. If you go to paste, you also understand that you still have to hit the same temperatures as with flux, as the solder i
Electronics Forum | Wed Nov 08 08:27:40 EST 2006 | davef
Q1: What is leadfree soldering? A1: Look here http://www.niccomp.com/NIC_RoHS_WEEE_Update_0305_b.pdf Q2: Why is it preferred over the convention leaded soldering? A2: Eurolanders legislated it without proper investigation into the environmental a
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