Where USB Memory Sticks are Born (2013)

A behind-the-scenes look at how USB flash drives are manufactured in a Chinese factory. The process starts with bare FLASH memory chips screened using probe cards, then manually placed onto flexible PCBs using bamboo sticks (modified chopsticks). Automated wire bonding machines connect the chips to the board, compensating for the manual die placement. The assembled panels are then overmolded with epoxy and cut into individual drives. Notable details include the non-clean-room environment, the use of thinned silicon dies flexible enough to bend, and an Intel-made 32Gb MLC NAND chip built on a 29nm process as the storage component.

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