Vous pouvez vous référer au tableau suivant.
| Jour de bal. | Réduction | Niveau de densité du modèle de terrain | Atterrissez-le. | Variation du terrain |
| 0.15 | 15% | C | 0.13 | 0.15-0.10 |
| 0.20 | 15% | C | 0.17 | 0.20-0.14 |
| 0.25 | 20% | B | 0.20 | 0.20-0.17 |
| 0.30 | 20% | B | 0.25 | 0.25-0.20 |
| 0.35 | 20% | B | 0.30 | 0.35-0.25 |
| 0.55 | 25% | UNE | 0.40 | 0.45-0.35 |
Lire la suite: BGA PCB Assembly
#Conception de PCB
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