Is there any legal obligations regarding consumer safety when selling the product?

I'm planning on releasing a USB powered device. Although I'm comfortable with the safety of the device (has fuses, ferrite beads, etc.) I'm not sure what are my legal obligations regarding consumer safety when selling the product (Europe and US at least).
  • Concerning the EU market, this is the main site that lists the regulation directives. Given the product type and the typical usage of your product, you have to dig into all these regulations and check the applicable standards listed on that site.
  • Find a CE declaration of conformity for an existing product that is similar to your product. The declaration will contain the applicable standards. Every product on the EU marked must have a CE DoC publicly available.

Read More: Quality Control & Testing

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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.
Picture of Oliver Smith

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.

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I’m making a 4 layer PCB prototype that uses a bluetooth mcu connected to a 2.4GHz chip antenna. I’m thinking about what to do with the feedline, whether it should be buried on one of the middle layers, or left on the top layer. To get a 50 ohm line, should I choose top layer with 13-mil width or buried miccrostrip with 7-mild width?

Is it ok to call all the chips with alphanumeric labels BGA (ball grid array)?

Some ICs have their pins labelled only with numerical values and some use alphanumeric labels. I want to know what is the correct naming term for these cases.
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