SIM900 Hardware Design
5.5 Electro-Static Discharge
The GSM engine is not protected against Electrostatic Discharge (ESD) in general. Therefore, it is subject to ESD
handing precautions that typically apply to ESD sensitive components. Proper ESD handing and packaging
procedures must be applied throughout the processing, handing and operation of any application using a SIM900
module.
The measured values of SIM900 are shown as the following table:
Table 30: The ESD endure statue measured table (Temperature: 25 , Humidity:45% )℃
Part Contact discharge Air discharge
VBAT ±5KV ±10KV
GND ±4KV ±10KV
RXD, TXD ±3KV ±6KV
Antenna port ±5KV ±10KV
SPK_P/N
MIC_P/N
±2KV ±6KV
PWRKEY ±1KV ±6KV
Other port TBD TBD
6 Mechanics
This chapter describes the mechanical dimensions of SIM900.
6.1 Mechanical Dimensions of SIM900
Following shows the Mechanical dimensions of SIM900 (top view, side view and bottom view).
SIM900_HD_V1.05 06.23.2010
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