Electronics Forum | Thu Jul 27 12:54:53 EDT 2000 | John Thorup
Hi Jason I think Wolfgang has this one nailed. If it's the same four pins every time and nothing changes this, even rotating the board 90 degrees, then you're probably going to find something like a ground plane connected to them. I don't think sol
Electronics Forum | Fri Jun 16 11:28:53 EDT 2000 | Boca
Solder 'follows' heat. 1. Preheating is a great idea, use a baking oven to get the whole assembly up to temperature, use the preheaters in your wave solder machine (without wave) to preheat the assemblies ... 2. Or use the biggest soldering iron
Electronics Forum | Mon Jun 05 14:10:54 EDT 2000 | C.K.
Dave: Thanks for you Earl-Moonesqe explanations. To answer your 3 questions below: * If there�s no flux in the via, why does the sodder flow? I thought it was the flux that removed corrosion to increase wetting that allowed
Electronics Forum | Fri Jun 22 11:54:47 EDT 2001 | jdtpfacreate
OEM Boy, This is an excellent question. Since I am on the "I-want-to-sell-you-equipment-side" I do not have the hands-on experience that you do but, I do have a many engineers back at our factory who have dedicated their lives to these issues.
Electronics Forum | Mon Jun 25 06:07:56 EDT 2001 | mzaboogie
Hello, I have a board that has been giving us problems for some time now. It is fairly well populated, mostly with IC's and SOT's on the topside. There is a Zilinx QFP160. This component does not reflow well. All of the other components look OK. A t
Electronics Forum | Thu Jul 05 21:42:28 EDT 2001 | davef
Most of our boards are fabricated with solder mask over bare copper [SMOBC], but we have couple where the solder isn't removed before masking. And ever so offin they's a liddy bit mo' solder than we'd like, which when reflowed, ends-up connecting so
Electronics Forum | Fri Jul 20 15:53:57 EDT 2001 | davef
Bowing to jokesters with comments about cake, in-laws that drink all their beer, musician friends, and whatnot; I'll push forward. What do yall do to manage the life and contamination level in the sponges that hand soldering operators use to clean t
Electronics Forum | Thu Jul 26 22:52:47 EDT 2001 | davef
GT 8 years ago every board saw "touchup". Touch was done to fix boards to conform to A-610. Now A-610 allows less than complete hole fill. Our operators were totally freaking nuts about touching boards. They touched each others touch and on and o
Electronics Forum | Thu Jul 26 02:20:37 EDT 2001 | mugen
Hey, hey, hey !!!! why do we always think of the BIG names, eh? give the underdog a chance, manz! We evaluated the METCAL bga rework station, (they only have one model going, no worry, its loaded with smart innovations) we gave it thumbs up, 2 thu
Electronics Forum | Tue Oct 19 16:59:58 EDT 1999 | Carol Zhang
Hi, thank you for the idea. I may try solder iron, but it much more slower since I have to solder spacers one by one. a stimpson press is used to press the spacer on the board and the edges of the spacers are rolled. Then we solder the edges to
