Esd Guidelines; Sim Card - Sierra Wireless MC Series Hardware Integration Manual

4. ESD Guidelines

4.1.

SIM Card

Decoupling capacitors must be added according to the drawings below as close as possible to the
SIM card connectors on UIM1_CLK, UIM1_RST, UIM1_VCC and UIM1_DATA signals to avoid EMC
issues and to comply with the requirements of ETSI and 3GPP standards covering the SIM electrical
interface.
A typical schematic including SIM detection is provided below.
Figure 1. EMC and ESD Components Close to the SIM
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