Hi Chetan,
Using the dielectric constant of the resin in the adjacent prepreg is a
reasonably start.
Keep in mind that for physical length matching this value is irrelevant.
For electrical length (delay) matching it may have a second-order effect.
Regards,
Istvan Novak
Oracle
On 4/17/2017 6:32 AM, chetan reddy wrote:
Hi Experts,
i have a doubt in entering stackup into PCB designers for length matching
calculations. What should i enter dielectric material fill in the conductor
layers? is it the adjacent dielectric layers properties(Dk) values or epoxy
resin(Dk)?
Please kindly help me in clarifying.
Regards
Chetan
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