Electronics Forum | Tue Sep 07 17:12:34 EDT 2004 | davef
No one knows what type of board you use. So, assuming you're talking a fairly standard FR4. Q1a. actually, what is max temperature and duration can a bare PCB reflow without any quality problem? A1a. We'd guess your board could take 250*C for may
Electronics Forum | Wed Sep 08 06:22:51 EDT 2004 | Tore
Hi all, There seems to be a problem with the major component vendors/manufacturer everywhere; to supply lead free dummy/daisy chain components, in particular BGA-devices, within a reasonable time (not a big fan of 8-12 weeks). If they got them at all
Electronics Forum | Mon Sep 27 11:10:52 EDT 2004 | grayman
First, Your flux is no good replace it. second, Check for pre- oxides. The smaller the component or the leads makes it difficult to solder specially if it has oxide. Thrid, check the board to wave parallelism. Maybe your wave is not parallel to the b
Electronics Forum | Mon Sep 27 10:56:01 EDT 2004 | grayman
First, for new stencil-you must ask you stencil dealer to put the markings before shipping it to you. Second, for old stencil-you buy some old angle bar or any metal plate about 1 inch by 1 inche. you engrave the markings on that plate and screw it
Electronics Forum | Wed Sep 15 05:33:04 EDT 2004 | Rob
Hi, The thing with Formula 1 is that they can afford to throw innumerable bodies at tasks (i.e. 8 people to change 4 tyres, 1 to hold a jack, 1 or 2 to refuel, 1 to hold a stop sign, 1 to hold a fire extinguisher, 1 with a stop watch, and the bloke
Electronics Forum | Fri Sep 17 07:44:41 EDT 2004 | Simon Uk
Yes, i have used and experienced problems with step stencils, but these were mainly to do with the communication of the requirements for the suppier. Best plan is to talk to your stencil supplier and get them to make the suggestions on what works bes
Electronics Forum | Tue Sep 21 11:01:59 EDT 2004 | pabloquintana
Cleaning method will depend on the type of flux > that you use in your soldering process. Yes it is isopropyl alcohol. We use "no-clean" halide free flux (Multicore X33-06i). We still cleaning and I beleive it is because we roto trim the leads aft
Electronics Forum | Tue Sep 21 10:20:47 EDT 2004 | Arvydas
Hi, all, We are looking for new chipshooter with 10-20K CPH speed. Unfortunately, we are not experts in P&P machines. For the moment we have 2 machines with speed 3-5K CPH and we are going to rise one speed level up. Our products are low to medium vo
Electronics Forum | Tue Sep 28 19:54:22 EDT 2004 | KEN
If we are talking about Indium...then you will eventually be paying what everyone else is. The resource is diminishing especially with the application into the display markets. Same with silver. We are comming out of an all time low for silver....
Electronics Forum | Fri Oct 01 13:37:27 EDT 2004 | rkevin
Well Thanks for all the good advise. Lots of different opinions on this one. I took the advise to contact my current supplier of solder paste. They sent in one of their tech people along with a sales guy and we ran without much trouble. Other than a
.gif)
