Kingmax Factory Tour in Hsin Chu, Taiwan

Chip Testing

We left Kingpak and headed to Kingmax.

Figure 9: Arriving at Kingmax factory.

After the chips arrive at Kingmax, they go to the testing and labeling facility.

Figure 10: How the chips look like when they arrive at Kingmax. These are the so-called UTT chips.

The chips are loaded into a tester, which is the machine shown in Figure 11. This machine has several bins, which one in programmed according to the chip speed and timings the manufacturer want to test the chip for. The machine in Figure 11 has nine bins. Some of the bins are used to store the rejected memory chips. In Figure 13 you can understand how this process works. On the machine in front of us bin1 was being tested for DDR433 CL 2.5, bin2 was being tested for DDR400 CL 2.5 and so forth. Bins 6 to 9 were reserved for rejected chips, which are separated according to the reason they were rejected.

Figure 11: Memory chip tester.

Figure 12: Memory chip tester in action.

Figure 13: Memory chip tester configuration.