Electronics Forum | Wed Dec 22 12:32:44 EST 1999 | Dave F
Pascal: Two things: 1 Selective soldering machine discussions and supplier lists are in the SMTnet archives. 2 Some people consider selective soldering machines to be very specialized use tools (too selective ha ha ha) and think carriers tooled f
Electronics Forum | Thu Jul 06 12:52:35 EDT 2006 | samir
..and he can put the flux in and keep it a secret too from his customer.. RSS profile on wave?? I never heard of a soak zone for wave preheat...you may be burning off your activator..hence, the beads. For wave preheat, your main goal is to ramp up
Electronics Forum | Fri Feb 21 07:14:59 EST 2020 | bk
I would always have top and bottom preheaters in a solderwave machine. Even if you can make it work without them, it's better to heat both sides of a board then just one. Far less stress on the parts you are soldering. Plus you may need it one day fo
Electronics Forum | Fri Feb 21 10:59:15 EST 2020 | slthomas
I used to work for an OEM that made professional audio equipment (studio monitors, mixing boards, etc.). The mixers required precise alignment of LEDs, switches, and pots in the sheet metal so we used aluminum alignment fixtures during wave solder. T
Electronics Forum | Thu Jul 15 07:08:29 EDT 2004 | pcbrown
Basically, it's a tilting problem of certain devices. Usually with axial by-pass caps tilting, which pulls the lead up through it's mounting hole. Other problems with components with leads cut to lenght to eliminate post-wave trimming. All suggestion
Electronics Forum | Fri Jun 25 15:04:39 EDT 2010 | siddharth
Thanks for you suggestions, guys. davef, I am gonna get with my PCB suppliers and talk to them about copper balancing and checking the Tg of the materials they use. SC, I am working towards designing wave pallets for my boards and try your suggesti
Electronics Forum | Thu Jul 15 22:19:04 EDT 2004 | KEN
Yep, but its hard to contol small parts with the bags. They're good for DIP's and sockets, connectors, but radials are kinda hit and miss. I bought mine from Pentagon EMS. They only use the finest european leather (kidding). PENTAGON EMS 10950 SW
Electronics Forum | Mon Jul 19 08:52:02 EDT 2004 | Omega
Try spraying flux on top of the loaded PWB when you put it on the conveyor. The tackiness of the flux does a pretty fair job of keeping the axial leaded parts down to the board. This takes more cleaning, but it has worked wonders for me on assemblies
Electronics Forum | Tue Jun 29 14:44:26 EDT 2010 | rgduval
There are some good suggestions here...reflow pallets, and copper balancing. We would also suggest verifying that your problem is not caused by moisture. How much time passed between first side and second side reflow, and how humid is the environme
Electronics Forum | Tue Aug 10 09:01:18 EDT 2010 | davef
No, warpage tells you that design and/or fabrication process and/or assembly process need[s] to be corrected. Here's a link to a recent thread on SMTnet that seems to answer some of your questions: http://www.smtnet.com/Forums/Index.cfm?CFApp=1&Mess
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