Pad hole ring copper Specification
Pad-hole-ring-copper Specification
| copper thickness | min trace | min trace space | min space between the trace and bigcopper | min hole size | min pad size | space between hole to trace(inner layer) | min pad ring |
|---|---|---|---|---|---|---|---|
| H OZ | 3MIL | 3MIL | 4MIL/th> | 0.2MM (7.874MIL) | Min hole size+2X4MIL | 6MIL | 4MIL |
| 1oz | 4MIL | 4MIL | 6MIL | 0.2MM (7.874MIL) | Min hole size ﹢2×5MILs | 7MIL | 5MIL |
| 2oz | 7MIL | 7MIL | 8MIL | 0.3MM (11.811MIL) | Min hole size ﹢2×8MIL | 8MIL | 8MIL |
| 3oz | 10MIL | 10MIL | 10MIL | 0.35MM (13.7795MIL) | Min hole size ﹢2×10MIL | 8MIL | 10MIL |
| 4oz | 12MIL | 12MIL | 10MIL | 0.4MM (15.748MIL) | Min hole size ﹢2×12MIL | 9MIL | 12MIL |
| Trace Width and Trace Space | Diameter of PTH | Diameter of NPTH | Finish Board Thickness | |
|---|---|---|---|---|
| Tolerance | ±10% | ±3MIL | ±2MIL | ±10% |
