Electronics Forum | Wed Apr 11 14:05:30 EDT 2001 | davef
No, there's not a really great epoxy product for attaching thermocouples in reflow. Specifically, what's your problem? From Sanders Temprobe verbage ... Adhesives There are two general classes of material commonly used to adhesive bond thermoc
Electronics Forum | Tue Sep 26 09:27:10 EDT 2000 | Chris May
LarryK, It all depends upon your volume / problem. As Jax says, if this is a repeating problemo, get QA & Purchasing involved. Is it your stores ? Do they receive 100 off and "decant" 20 into a tube (manual handling error, training etc;). From your
Electronics Forum | Wed Sep 18 12:31:16 EDT 2002 | dragonslayr
My suggestion is to conduct a Design For Manufacturing (DFM)study on the assembly in question. Pay particular attention to the pad sizes, component lead dimensions and satisfy yourself that those two factors are correct. Given that pads match compone
Electronics Forum | Fri Dec 01 17:03:57 EST 2000 | Dave F
Curious, very curious ... Residues � Where are these residues? [solder & laminate / mask, solder only, laminate / mask only] What is the result of your analysis to the residues? How do you know it�s a flux residue, rather than a chemical by product
Electronics Forum | Thu Jun 08 23:26:28 EDT 2006 | Shawn Vike
We are a small company, reletivly new to doing our own SMT (1 year) and we are having an issue, I think. We manufacture many board with no problems, but we have one that constently defeats us. This particular PCB has ENIG finish, and we have had th
Electronics Forum | Fri Aug 28 05:07:59 EDT 2009 | sachu_70
Do you clean the stencil manually or using the automated under-stencil cleaner on your Printer (recommended)? 1. Ensure that stencil wipes are lint-free and soaked sufficiently with solvent before use. 2. If your printer supports automated cleaning
Electronics Forum | Thu Aug 13 16:46:13 EDT 2009 | snsmt
Hello Everyone, I have noticed that everytime that we have ran a PCB with fine pitch components (or even 0603s), there are little white strands on the leads or on top of the components. It occurs on both lead and lead free solder. We usually soak
Electronics Forum | Fri Dec 01 14:12:50 EST 2000 | Jim M.
My company currently uses water soluble paste for our SMT process. We were having trouble retaining hot water in our in line, closed loop DI cleaner. The cleaner kept shutting down when the water temp. dropped below 125C. As a result, the conveyor
Electronics Forum | Thu Sep 11 11:12:52 EDT 2008 | aj
Hi, I had similar problem a while back. Diagnosis was a combination of two things: 1 - Gold thickness was below spec. which gave us solderability problems. There should be other areas of the board that show signs of this. 2 - The devise in queast
Electronics Forum | Wed Sep 10 14:56:57 EDT 2008 | rarnold
I am dealing with a similar uncoalesced solder issue. This defect has come and gone several times during the last 6 months. See image. In my case, I am using conventional SnPb solder and an entire strip of my OSP finished board (includes various de
