Electronics Forum | Wed Sep 19 14:23:31 EDT 2001 | jschake
Pad Metallurgy Used: Copper OSP pads were used for all of the results that I have been reporting. The same design test boards with Nickel/Gold pads are available and awaiting further assembly tests. I will consult with a board technology and metall
Electronics Forum | Wed Aug 18 09:20:22 EDT 2004 | QE
Davef, Sorry for the late response. I was trying to gather more info. The group with low ionic contamination levels came from one of our other facilities. We want to outsource more of our product due to increasing demand. Both groups use the same
Electronics Forum | Sun Mar 18 23:01:11 EDT 2007 | diesel_1t
Hi there, I want help on the following issue. Where I work, we place a component QFP 256 terminals (20 mil pitch)from hitachi (renesas), we use a MPM UP-3000 screen printer, IP-III placement machine and Vitronics 8 zones reflow Oven. lead plating
Electronics Forum | Fri Jun 15 12:08:49 EDT 2007 | ck_the_flip
Hi Grant, 1st off solder paste data sheets are just "guidelines". You always need to set your specs. based on the needs of your own process and product. Don't ever follow your solder-paste data sheet to the tee, or you're severely limiting yoursel
Electronics Forum | Mon Aug 27 11:51:47 EDT 2012 | cobham1
Its no my turn to give some advise. My first question would be can you put the boards into a carrier of some sort. There are many wonderful companies that make carriers that are ment for running down a smt line. This can be expensive unless you order
Electronics Forum | Thu Jul 23 13:23:45 EDT 2020 | bmalhi
Small components blown issue could be due to one of the below. - Process issue; Make sure solder paste is fresh, if flux is drying out it will not hold parts properly. Check downward pressure of Pick Place. SOT may have to be pushed a little harder i
Electronics Forum | Thu Jul 29 13:19:45 EDT 1999 | Erick Russell
Does anyone out there have any experience with laser soldering? I have heard that there are special formulations of paste specific for YAG soldering of PCB's. I am having good luck with BGA, uBGA, and QFPs but I want to improve the process. Any su
Electronics Forum | Thu Sep 03 09:29:05 EDT 2015 | milroy
Hi All, I need to know all about intrusive soldering. A site with all possible details about stencil design, paste printing for intrusive soldering and etc.. would be very helpful to me. Thanking you in advance,
Electronics Forum | Tue Apr 15 08:38:23 EDT 2003 | pjc
Don't have any specific links to papers and articles. Try searching on the IPC.org (plus APEX show http://www.goapex.org) and SMTA.org web sites. Any papers and articles on the process from equipment mfg.'s should be taken with a grain of salt. Sold
Electronics Forum | Thu Jul 20 23:41:55 EDT 2017 | heros_electronics
Below is an email that I copy and pasted from my customer's engineer about his concerns with the issue of the chips not reflowing (which is why I was asking about X-ray the chips to make sure they reflowed): Can you let me know your thoughts on his
