Electronics Forum | Tue Jan 16 16:59:39 EST 2007 | realchunks
Pallet angle is usually pretty good. Lead length is also another good thing to keep as short as possible. Air Knives don't work that well. Also check your board. Make sure you have solder resist between each and every thru-hole pad. If the board
Electronics Forum | Fri Mar 02 08:52:20 EST 2001 | markkrmp
Are your voids looking like blow holes also? Is this only occurring on the solder joints of the Thru Hole components and Via's? Or does this happen on SMD pads? My experience is that we have seen this but only with some of our older PCB's which are
Electronics Forum | Fri Jul 10 14:16:06 EDT 1998 | Bob Willis
As Steve said there should not be a problem with cracking plastic components but if you are reaching 180c there will be a problem with secondary reflow on the top side of the board. PCBs flex during wave soldering as they do during reflow if not supp
Electronics Forum | Thu Jul 09 17:12:00 EDT 1998 | Dave F
| We are wave soldering a board having 24 similar thru hole connectors on it, using a wave soldering pallet. The problem is that one particular pin of connector in around 6-9 connectors get excess solder on the bottom side. I have tried all the par
Electronics Forum | Wed Feb 01 10:53:56 EST 2006 | edruppert
AMS, Are you aware that you will have to purchase several types of insertion equipment for different part types? You will need an axial inserter, radaial and DIP inserter to cover the gamut of thru-hole insertion. Even then you may not cover oddba
Electronics Forum | Thu Mar 25 14:00:45 EST 1999 | Bob Willis
| Rob, | | We are also using intrusive reflow to simultaneously process SMT and Thru-hole components. Our arrangement goes as follows: | | - Screen print solder paste to the single sided PCB using 0.008" laser cut stencil. | - Apply adhesive dots
Electronics Forum | Wed Jun 30 10:24:27 EDT 2004 | K
We find keeping the work environment at about 22degC and humidity to about 40-50% is the best way to control the solder balls. Before we took measures we were out of control with solder balls especially in the summer months. We run aqueous solder thr
Electronics Forum | Fri Nov 16 08:22:03 EST 2007 | ck_the_flip
For those of you who've completely switched to Pb-Free or who're running in a mixed environment, are you also buying or specifying the "RoHS PCBs" - the ones with * Greater Tg (glass transition temperature) * Thru-holes with limited drill hits and
Electronics Forum | Wed Feb 21 08:48:37 EST 2007 | rgduval
Ideally? Never. You risk component break down by re-running the board over the wave machine. In a perfect world, your wave operator would make adjustments after one run, and you'd run another panel over the wave to judge the effectiveness of the a
Electronics Forum | Fri Jul 07 16:04:42 EDT 2000 | DONALD
We have an Ersa selective soldering machine here. We use the wire solder with the automatic feed. We dross and clean the pot roughly once a week. You can tell when it needs it by looking at the solder fountain. We do the nozzle at the same time. We c
