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GE864-AUTO Hardware User Guide
1vv0300779 Rev.0 - 20/06/08
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 56 of 62
Holes in pad are allowed only for blind holes and not for through holes.
Recommendations for PCB pad surfaces:
Finish Layer thickness [µm] Properties
Electro-less Ni /
Immersion Au
3 –7 /
0.05 – 0.15
good solder ability protection, high
shear force values
The PCB must be able to resist the higher temperatures which are occurring at the lead-free process.
This issue should be discussed with the PCB-supplier. Generally, the wettability of tin-lead solder
paste on the described surface plating is better compared to lead-free solder paste.
11.2.7 Solder paste
Lead free
Solder paste
Sn/Ag/Cu