You can refer to the following table.
| Ball Dia. | Reduction | Land Pattern Density Level | Land Dia. | Land Variation |
| 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% | A | 0.40 | 0.45-0.35 |
Read More: BGA PCB Assembly
#PCB Design
Shenzhen, China (November 14, 2025) — MOKO Technology, a leading electronics manufacturing services provider, successfully…
PCB prepreg and PCB core are two of the most important materials in PCB manufacturing.…
Have you ever see a circuit board that you can actually see through? That is a…
Impedance matching has become a cornerstone of the signal integrity in the realm of high speed PCB…
It is important to learn how to clean a circuit board properly if you’re working…
When designing PCBs, selecting the appropriate type of holes for fasteners is crucial. And much…