SIM900D Hardware Design
5 Electrical, Reliability and Radio Characteristics
5.1 Absolute Maximum Ratings
The absolute maximum ratings stated in Table 28 are stress ratings under non-operating conditions. Stresses
beyond any of these limits will cause permanent damage to SIM900D.
Table28: Absolute maximum ratings
Parameter
Min
Max
Unit
VBAT
-
5.5
V
Peak current of power supply
0
3.0
A
Voltage at digit pins*
-0.3
3.1
V
I
I
*
-
10
mA
I
O
*
-
10
mA
*For digital interface pins, such as GPIO, UART, LCD and PWM.
5.2 Operating Temperatures
The operating temperature is listed in following table:
Table29: SIM900D operating temperature
Parameter
Min
Typ
Max
Unit
Ambient temperature
-30
+25
+80
℃
Restricted operation*
-40 to -30
+80 to+ 85
℃
Storage temperature
-45
+90
℃
* The SIM900D does work, but deviations from the GSM specification may occur.
5.3 Power Supply Ratings
SIM900D_Hardware Design_V1.04
2010.10.09
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