CAM-M8 - Data Sheet

UBX-15031574 - R04

Product handling & soldering

Page 26 of 31

Production Information

7.4.1 Moisture Sensitivity Levels

The Moisture Sensitivity Level (MSL) relates to the packaging and handling precautions required.

CAM-M8Q/C modules are rated at MSL level 4.

7.4.2 Reflow soldering

Reflow profiles are to be selected according to u-blox recommendations (see the CAM-M8 Hardware

Integration Manual [1]).

7.4.3 Antenna ageing

Antenna electrode metallization is unprotected silver and will tarnish during storage due to sulfuric

compounds present in the atmosphere. Elevated temperature and humidity will accelerate this

process. Human skin contact, wool etc. will also cause tarnishing. This has no effect on the electrical

performance of the antenna. u-blox accepts no warranty claims for tarnished products due to this

normal and to be expected process.

7.4.4 ESD handling precautions

⚠

CAM-M8Q/C modules are Electrostatic Sensitive Devices (ESD). Observe handling precautions!

Failure to observe these precautions can result in severe damage to the GNSS receiver!

GNSS receivers are Electrostatic Sensitive Devices (ESD) and require special precautions when

handling. Exercise care when handling patch antennas, due to the risk of electrostatic charges. In

addition to standard ESD safety practices, take the following measures into account whenever

handling the receiver:

•

Unless there is a galvanic coupling between the local GND (i.e.

the work table) and the PCB GND, then the first point of

contact when handling the PCB must always be between the

local GND and PCB GND.

•

Before mounting an antenna patch, connect ground of the

device

•

When handling the RF pin, do not come into contact with any

charged capacitors and be careful when contacting materials

that can develop charges (e.g. patch antenna ~10 pF, coax

cable ~50-80 pF/m, soldering iron, …)

•

To prevent electrostatic discharge through the RF input, do

not touch any exposed antenna area. If there is any risk that

such exposed antenna area is touched in non ESD protected

work area, implement proper ESD protection measures in the

design.

•

When soldering RF connectors and patch antennas to the

receiver’s RF pin, make sure to use an ESD safe soldering iron

(tip).