User's Manual

page 42/51
HiAll
NC
User Manual 2012/06/28
7. ESD & EMC RECOMMENDATIONS
7.1 HiAll
NC
MODULE
HiAll
NC
module alone can hold up to 2KV on each of the 116 pads including the RF pad.
7.2 Module handling
HiAll
NC
modules are designed and packaged in tape-and-real for factories SMT process.
HiAll
NC
modules contain electronic circuits sensitive to human hand's electrostatic electricity.
Handling without ESD protection could result in permanent damages or even destruction of the module.
7.3 Customer’s product with HiAll
NC
If customer’s design must stand more than 2kV on electrostatic discharge, following recommendation must be
followed.
7.4 Analysis
ESD current can penetrate inside the device via the typical following components:
• SIM connector
• Microphone
• Speaker
• Battery / data connector
• All pieces with conductive paint.
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In order to avoid ESD issues, efforts shall be done to decrease the level of ESD current on electronic
components located inside the device
7.5 Recommendations to avoid ESD issues

Insure good ground connections of the HiAll
NC
module to the customer’s board.
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Flex (if any) shall be shielded and FPC connectors shall be correctly grounded at each extremity.

Put capacitor on battery 100nF or varistor or ESD diode in parallel on battery and charger wires (if any)
and on all power wires connected to the module.

Uncouple microphone and speaker by putting capacitor or varistor in parallel of each wire of these
devices.