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This report presents a Package Analysis of the Samsung K4AAG045WD-4CRB 4 Gb DDR4 SRAM. The K4AAG045WD-4CRB flip-chip fine pitch ball grid array (FBGA) package is 11.0 mm x 7.5 mm and is 0.76 mm thick, excluding the solder balls. The K4AAG045WD-4CRB component comprises a stack of four K4A4G085WD 1 Gb DDR4 SRAM dies flip- chip mounted to the printed wiring board (PWB). The three bottom memory dies of the stack have TSVs.