Product Info

LTE Module Series
EC25 Hardware Design
EC25_Hardware_Design 99 / 112
1)
SIMO is a smart antenna technology that uses a single antenna at the transmitter side and two
antennas at the receiver side, which can improve RX performance.
6.7. Electrostatic Discharge
The module is not protected against electrostatics discharge (ESD) in general. Consequently, it is subject
to ESD handling precautions that typically apply to ESD sensitive components. Proper ESD handling and
packaging procedures must be applied throughout the processing, handling and operation of any
application that incorporates the module.
The following table shows the module electrostatics discharge characteristics.
Table 51: Electrostatics Discharge Characteristics
6.8. Thermal Consideration
In order to achieve better performance of the module, it is recommended to comply with the following
principles for thermal consideration:
 On customers’ PCB design, please keep placement of the module away from heating sources,
especially high power components such as ARM processor, audio power amplifier, power supply,
etc.
 Do not place components on the opposite side of the PCB area where the module is mounted, in
order to facilitate adding of heatsink when necessary.
 Do not apply solder mask on the opposite side of the PCB area where the module is mounted, so as
to ensure better heat dissipation performance.
 The reference ground of the area where the module is mounted should be complete, and add ground
vias as many as possible for better heat dissipation.
 Make sure the ground pads of the module and PCB are fully connected.
Tested Points Contact Discharge Air Discharge Unit
VBAT, GND ±5 ±10 kV
All Antenna Interfaces ±4 ±8 kV
Other Interfaces ±0.5 ±1 kV
NOTE