Electronics Forum | Tue Jun 05 10:01:47 EDT 2007 | bartlozie
the temperature difference between solder and room temperature, So if you let the solder cool down, you need less energy then holding it on temperature + heating a bit up. 2. If you let the solder get to solid, you don't have oxidation. 3. If you l
Electronics Forum | Mon May 21 17:56:04 EDT 2007 | mefloump
We have a Delta Max (leaded) and a delta wave (lead free) and a soltec Selective solder. The software that runs the selective solder is much different than that of the wave machines. We have fitted our selective with a leaded and lead free pot to han
Electronics Forum | Tue May 22 14:32:17 EDT 2007 | mefloump
The soltec Selective solder machine is great and the software is much beter than that of the wave machines. I forgot to mention that we do use nitrogen with the Selective solder machine and have wonderful results. Like I said before it does take some
Electronics Forum | Tue May 22 17:13:58 EDT 2007 | mefloump
No nitrogen generator. We have a service bring us nitrogen tanks every week and have the machine set up so if one goes empty, we can turn on the other one to keep a seamless flow of productivity. Our waves run from 6:00 am until 3:30 am between 2 shi
Electronics Forum | Thu May 31 03:12:18 EDT 2007 | vinitverma
Hi John, You can write to me offline at vinit.verma@prosemtechnology.com and write the exact problem that you face after you have generated the action spec using PPS Pro 8.1. What is the problem that you're facing. The coordinate system is taken ca
Electronics Forum | Tue Jun 05 14:04:11 EDT 2007 | hussman
We have the same situation here. But generally it is the customer gives us a 1-up Gerber drawing and we need a multi-up or some form of breakaway to make the product. The way we achieve this is thru a Word document we call PCB Guidelines. We attac
Electronics Forum | Mon Jun 18 11:54:35 EDT 2007 | grantp
Hi, The problem seemed to be across multiple batches of boards, so I think they were made correctly, and we don't use a carrier in the reflow oven. However we just moved our equipment to the new factory yesterday, and connect and start turning on
Electronics Forum | Wed Jul 18 10:35:41 EDT 2007 | hussman
This seems like an odd request from an auditor. I can see an auditor requiring proof that you meet the J-Std, but verify? This would require you purposely damage product on a "before and after" scenario. As long as your manufacturing guideline say
Electronics Forum | Tue Jul 17 09:58:18 EDT 2007 | rgduval
I'd say it all depends on the CM, and how they cost out their production floor. I've seen everything from a flat cost per component placement (something like .05/machine placed smt part, .15/machine placed tht part, .25/hand placed tht part) to stra
Electronics Forum | Sat Aug 11 13:37:02 EDT 2007 | shing
I am a fresh SMT engineer. I am now facing a problems, solder contamination on Golden Finger nearly about 1 year. I don't know what going on. I have checked the cleaningness of stencil, solder paste handling,IR re-flow profile and even PCB surface
