What kind of materials should I used inside USB flash drive?

We are a office stationery brand which is not so sophisticated in USB manufacturing and design, so we outsource them. The quotation is not so pretty in unite price because of the high cost of raw materials, according to the explanation of the supplier. What kind of materials should I used inside USB?

PCB Design
November 20, 2023

The PCB will contain copper, of course, and probably some gold plating. The solder will be tin with 5% silver. The device lead frames may be tin-plated copper, or just tin, and some component leads may be iron. If there are connectors there may be brass (copper/zinc) or phosphor bronze (copper/tin) Inside the ICs there will be aluminum, possibly gold (though not on the silicon, they don’t play well together), and traces of other exotic metals.

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Oliver Smith

Oliver is an experienced electronics engineer skilled in PCB design, analog circuits, embedded systems, and prototyping. His deep knowledge spans schematic capture, firmware coding, simulation, layout, testing, and troubleshooting. Oliver excels at taking projects from concept to mass production using his electrical design talents and mechanical aptitude.

Oliver Smith

What Others Are Asking

If the PCB of my microwave oven is blown out, should I replace the PCB or buy a new microwave oven?

My microwave is broken. Should I send it to maintenance or buy a new one? What factors should I consider in this case?

Oliver Smith September 19, 2023

What SMT assembly techniques should I employ for a small PCB with only a one SOIC ?

So I’m going to repackage this breakout module for simple SPI with a bus-powered LED light strip. It seems expensive and unnecessary for advanced SMT assembly equipment and since its a small PCB with only a few SMDs. What techniques should I employ for this simple SMT assembly?

Oliver Smith November 23, 2023

What is the proper zero orientation for a SMT LED?

According to IPC-7351, the cathode should be on the left for a molded diode. However, when I use component wizard of my suppliers to create a diode, it places the cathode (K) on the right. Does it depend on the manufacturer? How does the assembly house know which way is correct?

Oliver Smith November 23, 2023