Newbie here. Looking for feedback on the following stackup from one of our designer.
- 4 layer PCB, original design stackup shown below
- PCB fab shop has concerned about asymmetric core design and recommended a balance design with 0.5oz copper across all 4 layers
- 0.5mm Core/Prep is also not standard, hence 0.46mm was suggested
- as a result of the revised stackup, a 35um finished copper, ~10% increase in trace width was suggested
Need help on:
1. Is there an obvious problem with the current stackup?
2. Our designer does not want any change on trace width (RF application), what would be our options?
Thank you in advance!
