Electronics Forum: 4000-13 (Page 1 of 1)

pwb warpage

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

PCB Delamination

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


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