PROCESS REFERENCE
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Reference values transcribed from the company process sheet. Simultaneous combinations and special requirements need project-specific review.
| Parameter | Reference value |
|---|---|
| Base materials | FR-4 · CEM-3 · Aluminum base |
| Layer count | 1–12 |
| Surface finishes | HASL · Lead-free HASL · OSP · ENIG |
| Minimum track / spacing | 0.10 / 0.10 mm (4 / 4 mil) |
| Minimum hole diameter | 0.20 mm |
| Maximum board size | 550 × 760 mm |
| Finished board thickness | 0.10–4.00 mm |
| Copper thickness | 18–380 µm |
| Solder mask colours | Green, blue, black, white, red, yellow |
| Outline tolerance | ±0.10 mm |
| Impedance tolerance | ±10% |
| Minimum slot | 0.50 × 1.00 mm |
| Legend line width / height | 5 / 30 mil |
| PTH diameter tolerance | ±0.05 mm |
| Layer registration | ±0.05 mm |
| Board thickness tolerance | ±8% |
| V-cut alignment | 4 mil |
Reference data is not an acceptance specification. Do not combine all published limits into one design. Lead-free finish alone does not establish RoHS / REACH compliance; request the applicable material and product evidence.
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