Electronics Forum | Mon Jul 31 10:51:11 EDT 2006 | Chunks
OK so you're stuck with gold. Not all that bad unless you're paying for it. Gold is very flat compared to HASL, so you should have no problems printing. This should lead to good placement as well. But after oven you mat have a big contrast betwee
Electronics Forum | Tue Oct 17 17:27:08 EDT 2006 | adlsmt
Define "pretty easily". Did anyone ever do whatever is making them fall off now before? In most casses where a component "falls off" then someone implements a totally subjective test to make sure the rest of the parts wont "fall off" they damage a lo
Electronics Forum | Mon Dec 04 22:23:18 EST 2006 | Brad
Hello all, Happy Holidays. I need the names of some companies that will 'LEASE to purchase' electronics assembly tools. Most importantly Microscopes, Soldering Irons, Air Compressors, Vacuum Pumps, Wire Cutters, Thru Hole Lead Forming Tools, Bakin
Electronics Forum | Tue Feb 06 13:24:31 EST 2007 | stepheniii
Good afternoon, > > You have to use lead paste > since none-RoHS components won�t withstand > elevated temperatures. Solder paste manufacturers > offer a lot of transitional pastes designed > specially for mixed process. Ask your paste > suppli
Electronics Forum | Wed Feb 07 07:45:50 EST 2007 | jax
Water soluble residues probably won't cause instant failures. The failures are most likely caused by excess paste being deposited on the center pad of the QFN. The excess solder keeps the part from sitting down in reflow and increases the possibility
Electronics Forum | Sun Mar 11 08:28:10 EDT 2007 | dave
Hi All, I would like to get some advice from users who place rfshields pre-reflow and reflow onto board. We ran a batch a few months back and boards which had the shields reflowed failed to function properly ~ I was happy enough that the profile
Electronics Forum | Sun Mar 25 15:38:07 EDT 2007 | Gibbon!
Couple of things. Type T thermocouples are solder friendly. However usually a header with screw terminals poses no problem as the temperature differential is nil. Getting thermocouple leads wet causes problems because two dissimilar metals + condu
Electronics Forum | Sun Apr 15 18:06:16 EDT 2007 | greg york
You may need slightly longer dwell times and a little more heat in the reflow and wave to ensure proper alloying/wetting. Also consider if you are using a nickel doped and high copper alloy on bare boards in Leaded wave solder bath you will pick up c
Electronics Forum | Wed Oct 31 16:56:11 EDT 2007 | glenearl
Has anyone ever looked into the possibility for laser marking 1812 size X7R ceramic chip capacitors injecting sufficient energy to cause cracking when voltage is applied? If so, what were the findings? We are having failures of caps from one manufa
Electronics Forum | Fri Nov 09 07:13:20 EST 2007 | hussman
You're joking rite? I mean the pitch between these two connectors is night and day. Of course you will get shorts on the 96 pin connector because your leads are right on top of each other. Now, what to do about it: You took a picture of the top o
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