GE863-PRO3 Hardware User Guide
1vv0300773a Rev. 0 - 24/01/08
Recommendations for PCB pad dimensions |
|
| |
|
|
|
|
| Ball pitch [mm] | 2 | |
| Solder resist opening diameter A [mm] |
| 1,150 |
| Metal pad diameter B [mm] |
| 1 ± 0.05 |
Placement of microvias not covered by solder resist is not recommended inside the “Solder resist opening”, unless the microvia carry the same signal of the pad itself.
Holes in pad are allowed only for blind holes and not for through holes.
Recommendations for PCB pad surfaces:
Finish | Layer thickness [µm] |
3 | |
Immersion Au | 0.05 – 0.15 |
Properties
good solder ability protection, high shear force values
The PCB must be able to resist the higher temperatures, which are occurring at the
11.1.3Solder paste
| Lead free |
|
|
Solder paste | Sn/Ag/Cu |
|
|
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved | page 56 of 64 |