| Features | Capability | Description | Patterns |
|---|---|---|---|
| Min. track width and spacing (1 oz) |
0.10 / 0.10 mm (4 / 4 mil)
|
1- and 2-layer: 0.10 / 0.10 mm (4 / 4 mil)
Multilayer: 0.09 / 0.09 mm (3.5 / 3.5 mil), 3 mil is acceptable in BGA fan-outs. |
|
| Min. track width and spacing (2 oz) |
0.16 / 0.16 mm (6.5 / 6.5 mil)
|
2-layer: 0.16 / 0.16 mm (6.5 / 6.5 mil)
Multilayer: 0.16 / 0.20 mm (6.5 / 8 mil) |
|
| Track width tolerance |
±20%
|
e.g. For a 0.1 mm track, the finished track width ranges from 0.08 and 0.12 mm.
|
|
| PTH annular ring |
≥0.20mm
|
2-layer:
1 oz: Recommended 0.25 mm or above; absolute minimum 0.18 mm 2 oz: 0.254 mm or above Multilayer: 1 oz: Recommended 0.20 mm or above; absolute minimum 0.15 mm 2 oz: 0.254 mm or above |
|
| NPTH pad annular ring |
≥0.45mm
|
Recommended 0.45 mm or more. This is to allow a 0.2 mm ring of copper to be removed around the hole for the sealing film to attach. Pad sizes smaller than the recommended value can result in the annular ring being very thin or completely missing.
|
|
| BGA |
0.25mm
|
① BGA pad diameter ≥ 0.25 mm
② BGA pad to trace clearance ≥ 0.1 mm (min. 0.09 mm for multilayer boards) ③ Vias can be placed within BGA pads using filled and plated-over vias |
|
| Trace coils |
0.15/0.15mm
|
Minimum trace width/clearance: 0.15/0.15mm, when traces are covered by solder mask (1oz)
Minimum trace width/clearance: 0.25/0.25mm, when traces are NOT covered by solder mask (1oz). ENIG only(high risk of short circuit with HASL) |
|
| Hatched grid width and spacing |
0.25 mm
|
|
|
| Same-net track spacing |
0.25mm
|
|
|
| Inner layer via hole to copper clearance |
0.2mm
|
|
|
| Inner layer PTH pad hole to copper clearance |
0.3mm
|
||
| Pad to track clearance |
0.1mm
|
Min. 0.1 mm (stay well above if possible). Min. 0.09 mm locally for BGA pads
|
|
| SMD pad to pad clearance (different nets) |
0.15mm
|
More details of SMD pad spacing: SMD Components Minimum Spacing
|
|
| Via hole to Track |
0.2mm
|
|
|
| PTH to Track |
0.25mm
|
0.35mm is recommended, minimum 0.25mm
|
|
| NPTH to Track |
0.2mm
|
|