Electronics Forum | Wed Jun 13 14:48:48 EDT 2007 | rgduval
Is there a sort of standard method to prevent part loss in reflow? I've had a couple of situations come up recently where we've lost some parts during second-side processing. We're running an Heller 1800, with a mesh belt. Most items process fine,
Electronics Forum | Wed Jun 13 15:40:44 EDT 2007 | slthomas
Edited because I completely misinterpreted your post. We used 2 lengths of Durapol with slots for the board edges and a shorty (free-floating, not attached) under the middle. Not much more elaborate than your titanium shims but we had it laying aro
Electronics Forum | Mon Jun 18 10:11:52 EDT 2007 | dyoungquist
Almost every board/panel we build is double sided and we use an MPM SPM screen printer with no problems. The screen printer is not the cause. We have seen heavier parts fall off the first side when going through the reflow for the second side. We
Electronics Forum | Fri Jun 15 08:47:18 EDT 2007 | ed_faranda
I by all means, am not an expert on Wave processes. But, our second bottom side zone for our wave is down. My boss said "well the flux looks okay, just run it" and won't give me the machine to properly fix. How many people have a problem with thi
Electronics Forum | Mon Jun 18 11:54:35 EDT 2007 | grantp
Hi, The problem seemed to be across multiple batches of boards, so I think they were made correctly, and we don't use a carrier in the reflow oven. However we just moved our equipment to the new factory yesterday, and connect and start turning on
Electronics Forum | Tue Jun 19 19:03:31 EDT 2007 | diesel_1t
Hi folks. If the solder is on the BGA but is not soldered at all on the pads, then you can discard BGA solder issues, by the other hand; you might be experiencing wicking due to heat is being absorbed on component so the balls on BGA are hotter than
Electronics Forum | Fri Jun 15 18:48:49 EDT 2007 | prologic
We have not processed very much 0402 size components in the past. We are finding that alot of our customers are upgrading their circuits and going with 0402 size parts. We recently processed one such circuit and odered a paste stencil 6 mil in thickn
Electronics Forum | Thu Jun 21 20:08:01 EDT 2007 | davef
Roland I read the article in the New York Times hard copy within the past two weeks. Maybe one of these: * http://query.nytimes.com/gst/fullpage.html?res=9907E5DF163AF933A25751C1A9649C8B63&sec=&spon=&pagewanted=2 * http://www.boston.com/business/g
Electronics Forum | Tue Jun 19 16:19:34 EDT 2007 | bk
There are no batteries in mydata magazines. This problem means your voltage is outside it's allowed range. In this case I think it's the 15 volts. If you open up the bottom of the machine and pull out the carriage you'll see a rectangular box that ho
Electronics Forum | Tue Jun 19 17:42:38 EDT 2007 | dyoungquist
We run a TP9 machine and had a very similar problem with it. On a TP9 machine there is a power supply board where all the voltages are generated. It is located on the bottom side of the unit. The problen was with one of the fuse holders. The co
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