[SI-LIST] Re: PCB Stackup - 4 vs 6 layers
- From: "Bill Reams" <breams@xxxxxxxxxxxxxx>
- To: <si-list@xxxxxxxxxxxxx>, <kevin98146@xxxxxxxxxxx>
- Date: Wed, 22 Sep 2004 07:51:31 -0500
Generally speaking, if you've both boards avoid the use of cost adding =
features (or use the same cost adding features) such as blind/buried =
vias, controlled impedance, etc then the cost is mainly driven by layer =
count. So:
fewer layers .EQ. less money
more layers .EQ. more money
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx
[mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of Budathoki, Trilok (GE
Consumer & Industrial)
Sent: Wednesday, 22 September, 2004 12:24 AM
To: si-list@xxxxxxxxxxxxx
Cc: kevin98146@xxxxxxxxxxx
Subject: [SI-LIST] Re: PCB Stackup - 4 vs 6 layers
Kevin,
Discuss it with your vendor. You have to just define the board thickness =
=3D
& matched impedance.
Vendors can then give you the options depending on the best stack, core =
=3D
thickness & dielectric constant of prepeg.
Hope it helps.
Thanks
Trilok Budathoki
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx
[mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of Kevin Khuu
Sent: Wednesday, September 22, 2004 2:59 AM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] PCB Stackup - 4 vs 6 layers
Given both PCBs have the same dimensions (Width and length) and =3D
thickness,=3D20
which stackup is cheaper to build?
4-layer PCB with a big core
Sig
GND
Big Core
PWR
Sig
or 6-layer PCB with a smaller core
Sig
GND
Sig
Smaller Core
Sig
PWR
Sig
Thanks,
Kevin
_________________________________________________________________
Don't just search. Find. Check out the new MSN Search!=3D20
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