Silicon Protection Arrays Application Guide SIM Socket Considerations: ● The SIM (Subscriber Identification Module) card has 3 data lines that are low-speed and low-voltage → Given the low speed of the signals, the capacitance will not be a concern ● The low-voltage signal lines are best protected by a device which has a low standoff voltage or VRWM → This allows the protection to turn on “earlier” in response to an over-voltage or ESD event ● Protection of the 3 data lines is shown below (i.e. CLK, DATA, and RESET) Application Schematics: *Package is shown as transparent SIM Controller SIM Socket VBUS DATA CLK Outside World RESET IC NC SP4001 Case GND NC NC GND Signal GND Case GND Recommended SPA Devices: SP4001-04UTG ESD Level (Contact) ±12kV Lightning (tP=8/20μs) 4.5A I/O Capacitance 0.75pF # of Channels 4 SP3002-04UTG ±12kV 4.5A 0.85pF 4 Ordering Number ©2009 Littelfuse, Inc VRWM Packaging 3.3V μDFN-6 (1.6x1.6mm) 6V μDFN-6 (1.6x1.6mm) 19