Electronics Forum | Wed Apr 30 21:00:36 EDT 2003 | davef
ENIG is a common solderability protection on BGA packages. Pd/Ni/Au while more expensive could have advantages over ENIG in the following area: * Allow both gold and aluminium wire bonding * Better solder resist compatibility (63�C max) * Might take
Electronics Forum | Tue Feb 10 17:38:22 EST 2015 | mbartel
low volume high mix, looking for advice on what i should get, a stencil machine or a jet printer for smt solder paste. used/new and companies i should look into?
Electronics Forum | Fri Apr 21 15:38:25 EDT 2023 | jamesatqkits
Hi Rob, Yes I agree with everything stated. Lots of things can cause this. I have gone over everything mentioned in your response. The thing is, I could do a simple drag and had no issues, then a few bridges then more. So I have checked everything, m
Electronics Forum | Thu Nov 18 10:56:16 EST 1999 | Dave F
Jacky: There�re major four factors that affect the reliability of a solder connection. 1 Design of the connection including the shape and height of the lead and the type and amount of solder. 2 Dissolution of base metals into the solder connection.
Electronics Forum | Fri Apr 18 11:38:50 EDT 2008 | sueph
I have a small board with some chips and 2 connectors (1 large and 1 small) with gull wing leads. The large connector has some "disturbed" solder joints per my QA people. These joints are toward the ends of the connector, not toward the middle. Th
Electronics Forum | Wed Feb 28 07:40:26 EST 2007 | realchunks
Hi Roderick, Guess it depends on how you define "minor". If it is just a visual blemish in the mask, there will be no affect o the BGA. If it is through the resist there may be a chance of solder shorting, which will affect it, I doubt it but poss
Electronics Forum | Wed Oct 20 20:38:30 EDT 1999 | Dreamsniper
I am looking for sources of temporary peelable solder mask to mask/cover holes on a circuit bd that need not be soldered during wave soldering�..must have distributors in Australia. I�ve contacted some down here but they do not have products package
Electronics Forum | Wed Feb 16 07:55:19 EST 2000 | Dave F
CK: I hear you about pads. Most secondary side SMT pads are primary side SMT pads that are on the secondary side. This only matters when boards are wave soldered. Rather than changing to larger components, consider a bigger fight than that ... ge
Electronics Forum | Tue May 02 14:53:31 EDT 2023 | jamesatqkits
Hi Bukas, thank you for taking the time to respond. My flow gauge shows 35 SCFH and the pressure is around 50 psi. Maybe the flow gauge is wrong? Thanks again. What delivery pressure do you run, if you run a selective solder machine? Thanks again. I
Electronics Forum | Wed Oct 11 09:04:37 EDT 2017 | sumote
I am looking for a source of metal pins. The rough dimensions are 0.500” long, and 0.025” x 0.025” square. They will be soldered to circuit cards on both ends, so must be a solder able metal. No special needs in the strength area, i just need a good
