PARAMETERS MANUFACTURE DOUBLE SIDE
| CLASS 3 | CLASS 4 | CLASS 5 | CLASS 6 | CLASS 7 | ||
| Minimum plated through hole diameter | 
|
20 mil | 12 mil | 12 mil | 8 mil | 6 mil |
| Minimum non plated through hole diameter | 
|
24 mil | 16 mil | 16 mil | 12 mil | 10 mil |
| Aspect / Ratio | 
|
5 | 5 | 6 | 8 | 13 (maximum
thickness 2 mm) |
| Minimum trace / spacing width | 
|
12 mil (½ oz )
12 mil (1 oz ) 14 mil (2 oz ) |
8 mil (½ oz )
8 mil (1 oz ) 10 mil (2 oz ) |
6 mil (½ oz )
6 mil (1 oz ) 8 mil (2 oz ) |
5 mil (½ oz )
6 mil (1 oz ) 7 mil (2 oz ) |
4 mil (½ oz )
|
| Minimum annular ring
|
|
9 mil | 7 mil | 5 mil | 4 mil | 3 mils |
Last update: 19-05-2007 Units: Mils |