# | Time Frame | 2019 | 2020 | 2021 | |
---|---|---|---|---|---|
Production | Sample | ||||
1 | Impedance(%) | ±10 | ±8 | ±6 | ±6 |
2 | Min.Laser Via | 160 | 160 | 150 | 150 |
3 | Min.Laser Land | 300 | 300 | 270 | 250 |
4 | Max. Aspect Ratio | 0.9 | 0.9 | 1 | 1 |
5 | Min. PTH Via Size | 200 | 200 | 200 | 150 |
6 | Min. Back Drill Design | D+150 | D+150 | D+100 | D+75 |
7 | Surface Finish | OSP / Inmmersion Ag | ENIG / ENEPIG | ENIG / ENEPIG | |
8 | Min. Back Drill Design | D+150 | D+150 | D+100 | D+75 |
9 | Layer Count | < 18 | < 24 | < 42 | < 62 |