Electronics Forum | Thu Jun 24 23:57:42 EDT 2004 | George
Could anyone tell me the difference in PCB material Nelco13 and FR4? PCB dielectric material Nelco13 is quite new for me and I knew nothing about it. For imcoming quality control (IQC), I am asked to identify PCB made of FR4 and Nelco13. How to do th
Electronics Forum | Mon Jun 28 01:44:02 EDT 2004 | George
Thanks a lot !
Electronics Forum | Fri Jun 25 07:13:40 EDT 2004 | davef
Nelco was developed by Park [ http://www.parknelco.com/parknelco/highspeed.htm ] Without fairly involved testing, you may be forced to rely on a c of c from your fabricator. Although, Park may be able to give you a lead.
Electronics Forum | Wed Mar 10 18:37:27 EST 1999 | Earl Moon
| I am looking for a supplier for bare fr4 material. I use the fr4 for fixtures and my supply has run out. A supplier in the new england area would be the best. | thank you | New England Laminate Co (NELCO) and Polyclad in NH. Earl Moon
Electronics Forum | Thu Mar 11 10:37:01 EST 1999 | Justin Medernach
| | I am looking for a supplier for bare fr4 material. I use the fr4 for fixtures and my supply has run out. A supplier in the new england area would be the best. | | thank you | | | New England Laminate Co (NELCO) and Polyclad in NH. | | Earl Moo
Electronics Forum | Mon Feb 02 11:51:23 EST 2004 | prs
Hello, I'm working with Nelco 4000-13 material .031 thk and am experiencing some warping. the board is roughly 1" by 3" and the warping is in the long dimension. The grain on the panel is also in the long dimension. Any pointers or advice on contr
Electronics Forum | Thu May 31 22:35:23 EDT 2012 | jacktan
I have encountered PCB delam issue with high density PCB. PCB has 42 layers , 5 mm thickness ,laminate material is NelcoN4000-13EP,Tg 210C and Td 350C. Have pre-bake at 125 c for 12 hrs before assy.My reflow temp is standard with 243 peak and TAL is
Electronics Forum | Thu Jan 06 17:33:07 EST 2011 | boardhouse
Hi Johan, Sounds like you have already gone over your product very well to reduce product cost. Switching away from Deep gold Tabs & carbon ink Key pads can save quite a bit. The only other thing to suggest would be material - Moving away from Isol
Electronics Forum | Wed Nov 15 09:36:27 EST 2006 | Board House
Hi AJ, The biggest mistake in the industry today is documentation for lead free assembly required product. We are still seeing prints coming in saying Lead Free / High TG FR4. When in reality standard FR4 170 Tg. material is considered High Tg. and L
Electronics Forum | Fri Jun 01 23:57:21 EDT 2012 | bwjm
HI Guys, i am facing similar issues with this BT resin material too. PCB specs are 4 layers, Nelco400013, same Tg and Td. My PCB delam after reflow. The PCB has both side mounted with SMDs. Initial mounting on the btm side after reflow, no delam. B
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