2.8V TX burst i ndicator
2.8V Embedded module ready
Loaded with 30pF and ESD
protection diode
It is recommended to add Transient Voltage Suppressor diodes (TVS) on the signals connected to the
SIM socket in order to prevent any Electrostatic Discharge. These types of diodes are mandatory for
the Full Type Approval. They should be placed as close to the SIM socket as possible.
TVS diodes with low capacitance (less than 10pF) also have to be connected on the SIM - CLK and
SIM - IO signals to avoid any disturbance from the rising and falling edge.