Electronics Forum | Fri Apr 01 02:56:18 EDT 2011 | grahamcooper22
the cause could be moisture in your pcbs. To check it...pass some bare pcbs through your reflow oven (this is a simple way of drying them out a bit), then paste and place and reflow as normal....if solder beads disappear then the pcbs have too much m
Electronics Forum | Thu Aug 25 21:26:27 EDT 2011 | leadthree
Solderability could be an issue. We usually buy the IC and stock it for up to 9 month. This time the ICs was from a broker and the datecode was not the latest. This said, we use already a solder paste that contains watersoluble flux, which is suppos
Electronics Forum | Thu Nov 10 09:25:54 EST 2011 | kevinemslie
We have had an issue where a turnkey company has a solderability issue with boards that we supplied. The most thorough way of proving thay the boards work in my opinion is to take a bare panel randomly from the batch (same date code) to have it paste
Electronics Forum | Thu Jan 26 02:07:33 EST 2012 | denmark
Sir i need someones expertise on my problem. We are running repair unit which we conduct FFC removal in this process we are encountering big problem by whick we lessen solder deposit on our PCB.. 1. Can you give me some idea on what way can we put a
Electronics Forum | Mon Apr 30 18:34:35 EDT 2012 | hegemon
Pure Tin terminations can be mitigated for components with solder terminations less than .030" in height from the PCB, by using 6 mil stencil with Sn63/pb37 solder paste. That's the simple story for our customers that require it. Beyond that height w
Electronics Forum | Wed May 29 18:52:59 EDT 2013 | navworx
Would like opinions on which brand of leaded water soluble solder has the longest print life. we're currently using Alpha WS-809. Each board goes through the printer every 15 minutes or so, and we wind up re-printing most boards as the solder isn't
Electronics Forum | Mon Jul 22 10:37:06 EDT 2013 | torch
we have been asked by a client if we are capable of producing product that will require HMP, I am currently tyring to gather as much info as I can with regards to this solder type and would like help can we run this type of solder through a smt line
Electronics Forum | Thu Apr 17 13:37:11 EDT 2014 | anvil1021
Hello All....we have several hundred PCBs that we need to run with a no-clean solder process and the surface finish is OSP. Our preliminary testing has found that the solder will not wet the entire pad even if the pad is over printed? We have contact
Electronics Forum | Fri Oct 03 05:59:20 EDT 2014 | cmchoue
Does anyone well know in "via hole design in ground pad" I have few question that i want to know the answer,thanks. 1.Thermal performance compare about a.Via Full Stuff (top/bottom:solder mask and inside is air) b.Via Half Stuff (bottom:solder mask
Electronics Forum | Mon Nov 17 16:23:14 EST 2014 | budro
The company I work for is installing a SMT prototype line, and I've been asked to determine the cost of operation. I know there will be cost for solder, solder paste, flux, stencils, glue, nitrogen, ect... I just want to make sure I'm not missing any
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