Memory module manufacturing is quite simple:

• Solder paste is added to the PCB;
• Memory chips and other components (little capacitors and SPD chip) are put on the PCB;
• The module enters an oven where the solder paste will be melt thus soldering the memory chip to the PCB;
• The modules are cut from the panel;
• The memory module is then tested;
• The memory module is packed and shipped to costumers.

As we mentioned, Kingmax buys the printed circuit boards (PCB) from another company, called Brain Power. The PCB comes in a panel, with several modules attached together (see Figure 20). In the case of the modules being manufactured, each panel had nine modules.

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Figure 20: PCBs on their original package.

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Figure 21: They came from Brain Power.

After being unpacked, solder paste (grey stuff in Figure 22) is applied to the PCB. A stencil is used in order to allow the solder paste to be applied only on the exact spots were the manufacturer wants to solder something.

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Figure 22: Solder paste being applied to the PCB.

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Figure 23: PCBs after applying the solder paste.