Electronics Forum | Tue Nov 28 20:12:41 EST 2006 | davef
We don't have a gap between the lead and the pad after a SM joint is soldered. On our boards, this space is filled with the solder intended to attach the component to the board. How high do components sit above the surface of a board? Most people a
Electronics Forum | Fri Jun 08 10:48:06 EDT 2007 | rm14
2 waves is correct. While running the glass test panel over the chip wave (1st wave) you can see gaps due to the turbulance. What I did find was the gap of the chip wave was not closing up enough so I adjusted this which made it better. What is the p
Electronics Forum | Fri Nov 30 15:23:03 EST 2007 | jdumont
The hot melt is prob the only way to go for that size gap. If you could decrease that gap I would suggest using 3M Scotchweld DP100FR. Check it out. We use the duo pak cartridges and mix nozzles with the gun. Very simple use and works great in our ES
Electronics Forum | Sat Nov 10 19:54:04 EST 2012 | kahrpr
Some people put spark gaps on the PCB it a trace that comes to a point that's exposed from the circuit you are trying to protect to a trace that comes to a point from the ground trace. The 2 points are about .005 inches apart. When the charge hits th
Electronics Forum | Wed Mar 27 04:32:49 EDT 2019 | pavel_murtishev
Charliem, Thank you for the input. Following this logic, in case if there are no soldering issues, pad coverage and voiding levels are within acceptable limits and a gap between BTC and pad let us say 200um, this could be accepted, right? IPC-A-61
Electronics Forum | Sun Oct 16 04:23:20 EDT 2005 | olas
I have a couple of questions about the SMEMA conveyor (standard 1.2); I posted the question to them but had no answer. SMEMA says: 5) Maximum gap. The maximum gap between the in-line machine track ends is 0.375� I would suppose this gap refers to th
Electronics Forum | Tue Dec 07 21:28:00 EST 1999 | sosina outry
I had read all three reply to the interval of pcb in the reflow process already. Like Wolfgang said, base on the profiling and the temp that you set in there. The interval will be base on that temp. Some might have a gap of one pcb lenght, some mig
Electronics Forum | Thu Oct 20 23:19:09 EDT 2005 | Cmiller
You should not be worried about these points in the SMEMA standard. You need to make it work for your application. If you are running really small boards, keep the gap between conveyors and the lead-in as tight as you can. If you are using large pane
Electronics Forum | Wed Aug 23 12:14:15 EDT 2006 | jdengler
At a previous job we had a kit to splice the belts. It was a clamping and squeeze device and a soldering iron with a flat blade. You would cut the ends for a suare edge, put the belt in the clamp unit with a small gap. Use the iron to melt both en
Electronics Forum | Fri Dec 15 03:16:11 EST 2006 | pavel_murtishev
Good morning, The critical points for successful PIP technology are: 1. Gap between THT lead and PHT hole. It shouldn�t be greater that 0.2mm; 2. Lead shape. THT leads MUST be straight or you�ll get excessive voiding otherwise; 3. As Russ said, pas
