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5 solder paste, 6 ge863 solder reflow – Rainbow Electronics GE863-PY User Manual

Page 73

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GE863 Hardware User Guide

1vv0300783 Rev.0 - 10/06/08

Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved

page 73 of 80

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 wet-ability of tin-lead solder
paste on the described surface plating is better compared to lead-free solder paste.

12.1.5 Solder paste

Lead free

Solder paste

Sn/Ag/Cu


12.1.6 GE863 Solder Reflow

The following is the recommended solder reflow profile