Esd Protection - Quectel SG368Z Series Hardware Design

V
OH
V
OL
Table 51: SD Card Low-voltage I/O Characteristics (Unit: V)
Parameter
V
IH
V
IL
V
OH
V
OL

6.5. ESD Protection

Static electricity occurs naturally and it may damage the module. Therefore, applying proper ESD
countermeasures and handling methods is imperative. For example, wear anti-static gloves during the
development, production, assembly and testing of the module; add ESD protection components to the
ESD sensitive interfaces and points in the product design.
Table 52: ESD Characteristics (Temperature: 25–30 ° C, Humidity: 40 ± 5 %, Unit: kV)
Test Points
VBAT and GND
Antenna interface
Other interfaces
SG368Z_Series_Hardware_Design
High-level output voltage
Low-level output voltage
Description
High-level input voltage
Low-level input voltage
High-level output voltage
Low-level output voltage
Contact Discharge
± TBD
± 4
± TBD
2.4
-0.3
Min.
0.65 × VCCIO3
-0.3
1.4
-0.3
Air Discharge
± TBD
± 8
± TBD
Smart Module Series
VCCIO3 + 0.3
0.4
Max.
VCCIO3 + 0.3
0.35 × VCCIO3
VCCIO3 + 0.3
0.4
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