Electronics Forum | Tue Sep 30 14:24:37 EDT 2008 | eedlund
A water soluble solder paste (AIM WS483), reflow and wash. We are considering using AIM NC254 No-clean solder paste to eliminate the wash step.
Electronics Forum | Fri Oct 03 15:18:27 EDT 2008 | davef
Good ol' general purpose, day-in, day-out ~$1k hot air rework stations are: * Pace ThermoFlo ST 300 Low Cost Hot Air Reflow System [ST 325 is digital] * Hakko FR-803B SMD Rework Station [FR-802 is digital]
Electronics Forum | Wed Oct 22 12:46:05 EDT 2008 | hussman
Wire wheel works too. Pre tin the part. Hand solder after reflow. Or order good parts. I prefer the last one. Hows that for an answer?
Electronics Forum | Mon Oct 13 17:55:43 EDT 2008 | slthomas
Why don't you just reflow them right after you populate? Then you'll quit losing parts because someone bumped a board after the paste lost its tack.
Electronics Forum | Mon Oct 13 19:59:18 EDT 2008 | mariss
Main reason is the oven is 38kW and reflows a day's worth of production in 90 minutes. If it ran all day this place would be a sauna. That and the cost of electricity. Mariss
Electronics Forum | Thu Oct 16 08:41:21 EDT 2008 | davef
We don't associate solder balls with no-clean flux and humidity. For solder balls with no-clean flux, we'd rather have you thinking about: * Paste selection * Aperature size * Paste print process * Reflow recipe
Electronics Forum | Sun Oct 19 05:58:08 EDT 2008 | bejingaf
Hello! I'd like to now if you have similar requests from your customers as we have that we are not alloved to manually repair solder joints after reflow or wave soldering process? Regards!
Electronics Forum | Tue Oct 21 12:10:04 EDT 2008 | jdumont
Do your boards only have three parts on them? Otherwise, i dont see how this is possible. Do you scrap the board if there is an issue or do you fix it and make it look like reflow soldering?
Electronics Forum | Mon Oct 20 15:24:52 EDT 2008 | davef
During reflow soldering, sometimes via fill with solder leaving the solder connection starved. Questions are: * Specifically, what is the problem you see? * Do the defective pads show that solder has melted in a uniform fashion? * How do the tempera
Electronics Forum | Thu Oct 30 19:59:05 EDT 2008 | gregoryyork
solder ball was caused by hasl process not reflow. seen before many times, look around wells of smt on bare boards should be more of them
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