Electronics Forum | Fri Apr 07 11:52:44 EDT 2000 | Ashok Dhawan
Can anyone suggest a cleaning solvent for removing silicon residue after K Tape has gone through 2 cycles of reflow soldering ? The solvent or cleaning method has to be compliant to IPC Standards - to be used for cleaning gold edge fingers - PCB asse
Electronics Forum | Wed Apr 05 23:56:02 EDT 2000 | angela
Recently we have serious problem of our 0.5mm pitch QFP solder bridge. I check the viscosity of the Litton Kester paster. It's roumd about 700 is it too low. And do you have god solution about it? thanks alot
Electronics Forum | Tue Apr 04 16:39:41 EDT 2000 | Kevin Facinelli
Does anyone have any good information on alternative solder paste materials like the Emerson and Cuming CE 3103. I would be interested in any information anyone may have on these new materials...... Thanks, Kevin
Electronics Forum | Fri Mar 24 07:25:14 EST 2000 | Pete
Does PTH design can affect the wave soldering process in term of increasing the incidence of solder bridges, even without a component being present?. I have been experiencing a situation weere I believe this is happening. In this case separation of P
Electronics Forum | Wed Mar 22 11:49:16 EST 2000 | Chris May
Can anyone recommend a solderability test kit. This would be used for SOT23, chip caps resistors etc; Thanks in advance, Chris
Electronics Forum | Thu Mar 16 18:38:30 EST 2000 | cpgoh
Hi, I would appreciate some help here.. I am black residue with my wave soldering provess with my Electrovert machine sometimes, they are dotted all over the board ! I am also using no clean flux through an externel spry fluxer unit.. thanks Darren
Electronics Forum | Thu Mar 02 21:51:46 EST 2000 | Dave F
Robert: Consider requesting samples of different sized solder balls from a variety of suppliers, solder them to dummy boards, and compare the size of reflowed balls to your spec. Then you could buy based on results. My2� Dave F
Electronics Forum | Thu Mar 02 09:45:24 EST 2000 | Jacqueline Coia
Could this QFP be easily wave soldered if placed on solder side of PCB, if so are there two different footprint formulas that take both wavesoldering and reflow into consideration. Thanks again. Jack
Electronics Forum | Wed Mar 08 21:16:38 EST 2000 | Dave F
Wolfgang: I agree that the IPC pads are reflow / top side wave solder. We run bottom-side PCLL at 45� to the wave with fairly involved solder thieves. Ta. Dave F
Electronics Forum | Tue Jan 16 07:02:47 EST 2001 | You Kim Huat
HI, Can someone advice me, is there any guideline to determince the opening for stencil during stencil fabrication. Also is there any method to determince whether the solder paste amount is enough during this process.
