[SI-LIST] Nelco4000-6, Nelco4000-13 and Nelco4000-13si
- From: Neo <neoflash2008@xxxxxxxxx>
- To: List Si <si-list@xxxxxxxxxxxxx>
- Date: Thu, 3 Dec 2009 12:29:03 -0800 (PST)
Hi fellow Si-List members:
I have a question about the FR4 material used in current digital system's
backplane boards.
I used to take FR4 as a single material with loss tangent 0.02. However,
recently, a lot more FR4 materials are exposed to me, including Nelco4000-6,
Nelco4000-13 and Nelco4000-13si.
My question is that which kind of Nelco4000 material is referred to as
traditional named FR4? And how are they differently utilized in system board
design.
Regards,
Neo
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