SF56K Micro SIM Card Connector JAE Electronics SF56K Micro SIM Card Connector is a push-push type connector designed for smartphones, feature phones, mobile routers, tablets, or other communication devices that take a micro SIM card. The push-push type tray is designed to prevent the insertion of other cards such as micro SD and Nano-SIM cards. The reverse insertion prevention structure will not engage if the micro SIM card is inserted backward or upside down. The SF56K component prevents contact deformation and uses six hold-down points to reduce EMI (electromagnetic interference). These features ensure reliable SIM card mating over a long period of time (5000 couplings). The slim, compact JAE Electronics card connector provides 100mΩ contact resistance, 0.5A rated current, a 10V rated voltage, and can operate in -25°C to +85°C temperatures.