Electronics Forum | Tue Apr 03 22:03:18 EDT 2001 | davef
With friends like you, who needs enemies? I�d guess that the perceived benefits of flat pads for your 20 mil pitch and below components counter-balance the higher cost, gold being a solder pot contaminant, limited solder mask compatibility, potentia
Electronics Forum | Sun Nov 24 09:54:24 EST 2002 | davef
On a HASL board that has poor wetting on the pad, consider looking further downstream in the process than your assembly shop. For instance, take a look at the bare boards. Look for solder mask bleed onto the pads. This will show-up on the outside
Electronics Forum | Tue Jan 24 07:43:45 EST 2006 | Chunks
Q: If you do not use a selective wave pallet does this not leave the possibility of solder flowing up thru the Via's on the board? A: No. Your board house can cover your vias with solder resist. Your board house can plug the vias. You can cover t
Electronics Forum | Tue Feb 11 22:59:33 EST 2003 | davef
As others have stated, there are a few other things in the aveage assembly shop that are much more scary that a reflow oven. For instance, we have a wonderful wave soldering machine and w've been doing that kind of stuff for tens of years, but every
Electronics Forum | Wed Oct 03 23:59:44 EDT 2018 | gaintstar
Flason SMT problem solving: http://www.flason-smt.com/new/PRINCIPLE-OF-SURFACE-MOUNT-PROCESS-SMT-PROCESS.html http://www.flason-smt.com/new/Printed-Circuit-Board-PCB-Price-Estimator.html http://www.flason-smt.com/new/Printed-Circuit-Board-Solder-res
Electronics Forum | Tue Dec 01 13:53:12 EST 1998 | Brian Conner
| | | | | | All y'll: I could use your input on determining when to skim dross from a wave solder pot. | | | | | | | | | | | | On one hand, dross protects the surface of the solder from oxidation. On the other hand too much dross may affect solder
Electronics Forum | Wed Dec 02 09:03:34 EST 1998 | Dave F
| | | | | | | All y'll: I could use your input on determining when to skim dross from a wave solder pot. | | | | | | | | | | | | | | On one hand, dross protects the surface of the solder from oxidation. On the other hand too much dross may affect
Electronics Forum | Thu Dec 09 18:21:20 EST 1999 | Boca
Mike, Russ is right, no 'normal' wave machine will solder PCB's with 1" long lead length. I have seen waves modified to clear up to 5/8" leads, but the deeper the wave the uglier things get. They get uglier in that a lot more dross is produced, con
Electronics Forum | Wed Jul 15 03:20:51 EDT 2020 | wellmanrau
Dear Sir: We have the coating machine with good performance and price for market promotion. We have been producing the SMT machines and intelligent equipment for many years, integrated Design, R&D, Production, Sales and Technical Service. What produc
Electronics Forum | Thu Jan 28 10:09:51 EST 1999 | Charles Stringer
| | | | Greetings, | | | | | | | | Can anyone tell me what temperatures pcb's should have when coming out of a forced convection reflow oven and out of a wavesoldering machine. | | | | Also, is there any danger of the pcb's giving off some kind of g
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