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 | Mon Dec 09 09:31:35 EST 2002 | MA/NY DDave
Hi Just one idea, many exist. If your electrical designers can tolerate it, sometimes a cross hatched design is used under areas where electrical performance is important. It reduces coupling and impedance effects compared to a full layer. Elimina
Electronics Forum | Thu Jun 20 04:49:34 EDT 2002 | scottxiao
according to the ressult of cross-section and removing the component, I find there is no black area in the left pad, and the IMC is also normal, so the black nickle is less impossible. the PCB material is not common FR4, just some thing like ceramic,
Electronics Forum | Tue Jun 12 09:30:42 EDT 2001 | Rob Fischer
I assume the material you are using is black. This may sound far fetched but try using a lighter color material. Going from black to gray has given users as much as fifteen degrees F. less in heat loss.
Electronics Forum | Tue May 13 17:53:54 EDT 2014 | anvil1021
Hello Michel...this might be a bit of a battle finding the low thermal EMF material that you are looking for. The first one that comes to my mind is Bismuth Selenium Telluride, with either a nickel or cobalt doping agent. Silver went away from this
Electronics Forum | Tue Jun 12 11:28:30 EDT 2001 | CPI
Rob: Wouldn't that only apply to IR ovens. If using a true convection oven the color of the material wouldn't hinder output at all "Right". Don�t want to see someone spend money on new tooling if unnecessary.
Electronics Forum | Tue Jun 12 20:36:00 EDT 2001 | ianchan
Hi mates, thanks for the interest on this topic, just to share info to clarify any queries : 1) am using light blue-grey materials for the Pallet 2) am using Hot Air Convection Reflow Oven 3) I suspect its due to the Pallet materials properties, t
Electronics Forum | Fri Jun 06 06:11:18 EDT 2014 | paulg
I have a large monoblock ceramic filter on a PTFE based pcb material. The filter has a metal casing soldered onto the ceramic filter. I am concerned that if the heating rate is to rapid, then thermal shock / differential expansion could cause the fil
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