The L-shaped main board removed from the chassis was about 20.7mm long and 14.2mm wide. The semiconductor package with Apple's logo is printed with characters like "K9HB608U1A-BCBC" and "8442A ARM." The semiconductor package, which measures 8.5 x 12.5mm, occupies most of the area on the main board.
"Judging from this mark, this semiconductor must be manufactured by Samsung Electronics," the engineer said. "The second-generation iPod shuffle is also mounted with Samsung's SoC."
SoC, flash memory staked
On the back of the main board, there are a few small ICs (about 1.2 x 1.2mm in size), two crystal oscillators and some passive components such as a coil. The first- and second-generation iPod shuffles are equipped with two large ICs, which are an SoC (system on chip) and flash memory. On the other hand, the third-generation product has only one large IC. The semiconductor package with Apple's logo seemed to contain both an SoC and flash memory.
The secondary battery is connected by a flexible substrate solder-mounted behind the main board. The battery is printed with letters such as "LIP 3.7V" and "Whr: 0.27Whr." Probably, it is a 3.7V Li-polymer secondary battery with a power capacity of 0.27Wh.