Rigid Printed Circuit Boards (PCB)
| Standard | Advanced | |
| Annular Ring | ||
| Internal Minimum Pad Size | .016" larger than finished hole size | .014" larger than finished hole size w/teardrop |
| External Minimum Pad Size | .016" larger than finished hole size | .014" larger than finished hole size w/teardrop |
| Increase pad size accordingly for annular ring requirements greater than .001" | ||
| Holes requiring greater than .001" copper (i.e. 1oz plated to 3 oz Finish) require and additional .004 pad diameter. | ||
| Plane Layer Clearance | ||
| PTH & NPTH Hole Clearance to Plane | .030" larger than finished hole size | .024" larger than finished hole size |
| PTH & NPTH Hole to Inner Layer Trace | .015" Spacing | .012" Spacing |
| Line Width and Space | ||
| Inner Layer Line width on Hoz copper | Minimum -.004" | Minimum - .004" |
| Inner Layer Line width on 1oz copper | Minimum-.005" | Minimum-.005" |
| Inner Layer Line width on 2 oz copper | Minimum -.008" | Minimum -.008" |
| Inner Layer Line width on 3 oz base copper or greater | Minimum -.012" | Minimum -.012" |
| Outer Layer Line width on H ounce base copper | Minimum-.004" | Minimum-.004" |
| Outer Layer Line width on 1oz base copper | Minimum -.005" | Minimum - .005" |
| Outer Layer Line width on 2 oz copper | Minimum -.008" | Minimum -.008" |
| Outer Layer Line width on 3 oz base copper or greater | Minimum -.012" | Minimum -.012" |
| Inner layer Feature to Feature on 1 oz or less base copper | Minimum -.005" | Minimum - .004" |
| Inner layer Feature to Feature on 2 oz Base Copper | Minimum -.008" | Minimum -.008" |
| Inner layer Feature to Feature on 3 oz copper or greater | Minimum -.012" | Minimum -.012" |
| Outer layer Feature to Feature on 1 oz or less base copper | Minimum -.005" | Minimum - .004" |
| Outer layer Feature to Feature on 2 oz Base Copper | Minimum -.008" | Minimum -.008" |
| Outer layer Feature to Feature on 3 oz copper or greater | Minimum -.012" | Minimum -.012" |
| Trace to Plane Spacing | Minimum -.008" | Minimum -.008" |
| Feature to Board Edge *does not include tabs | Minimum -.010" | Minimum -.008" |
| Feature to Score Edge | Minimum -.020" | Minimum -.015" |
| Solder Mask | ||
| LPI Conductor Overlap | .015" Larger Than Feature Size | .010" Larger Than Feature Size |
| LPI Mask Clearance | .015" Minimum | .013" Minimum |
| .005" Minimum | .005" Minimum | |
| Less than 4 mil web between component pins may result in loss of mask between SMT pads. | Decrease clearance to 5 mil, then web to 3.5mil, then clearance to 4 mil, etc. | |
| Silkscreen | ||
| Silk Screen Ink | .008" minimum aperture | .006" minimum aperture |
| Copper Features (ETCHED TEXT) | .010" minimum aperture | .010" minimum aperture |
| Font Height | .065" minimum height | .045" minimum height |
If the specifications of a board design fall into the advanced category it may be subject to additional charges.