Electronics Forum | Mon Nov 02 14:45:25 EST 2015 | stevezeva
Hi there! If they are just standard headers there's a company called Teka that makes headers and socket headers with solder preforms in them. They call it "Solder Bearing Lead Technology" You can drop them in the board and reflow them just like SMT p
Electronics Forum | Tue Sep 13 10:00:27 EDT 2016 | awhite
Switched out the mech. relay on the board loader, no change. Same behavior. Could not find a mech. relay on the printer... SMEMA wiring appears go directly to a PCB. And it is at that point that I run out of talent. If the machine weren't dedicate
Electronics Forum | Tue Feb 14 09:10:43 EST 2017 | davef
Assuming the traces run parallel and perpendicular to each other, I'd choose one direction the traces run as "x" and the other direction for "y." Then I'd pick a unique identifier on the board to insure proper orientation. Next, I'd measure warp and
Electronics Forum | Thu Jul 27 21:34:41 EDT 2000 | Dave F
Gary: That's curious. Tell us more about your process steps, temperature profiles, paste, warping of the board without the PIH processing, components, etc
Electronics Forum | Sat Oct 06 08:42:21 EDT 2001 | davef
Please give us additional background on your board, solder, process, etc. If you are talking about black pad in ENIG solderability preservative, check the fine SMTnet archives to get started.
Electronics Forum | Tue Jan 04 08:02:54 EST 2005 | Mike
Hi!! Where can I get information about Post- and pre-reflow rework? Some links, opinions?? Please Tell me? I would like to know too some methods and cost effective ways,that how we can rework repair printed boards? Thanks!!
Electronics Forum | Wed Aug 31 12:33:25 EDT 2005 | Jaya
I have expirence running,double sided Imm gold boards recently which ed up a lot of solderability issue. The Imm gold need to be slightly more control during reflow oven area on it's profile.
Electronics Forum | Mon Dec 19 07:29:30 EST 2005 | jax
Tg is just a way to say when the board goes limp... or a quick way to rank laminates... who cares. For lead free you want to look at Td, Decomposition Temperatures. ( Temp at which the material weight changes by 5% )
Electronics Forum | Mon Dec 19 12:21:09 EST 2005 | Amol Kane
from what i know, Tg is important from thermal stresses point of view. board warpage increases greately when Tg is exceed
Electronics Forum | Thu Jul 06 12:06:12 EDT 2006 | pavel
Rob, do you have any tip on reliable supplier of "really flat" flexible pcb? We tried several but all with issues. Thank you. Pavel
