This is still quite a lot. General formal electronic trading websites can be bought, and the quality is also guaranteed. For example, Mr. IC provides capacitors, resistors, transistors and other components, and they are all original products. Of course, no matter where you buy it, you need to be familiar with the identification method so that you won't buy fakes. Specifically, it can be analyzed from the following prices:

Surface grinding marks

First of all, we can see if there are any polishing marks on the surface of electronic components. Generally, there will be fine lines or trademarks of previous manufacturers on the surface of polished parts. Of course, some dealers will also paint a thin layer on the surface of the parts to cover it up, which looks very bright and basically has no plastic texture.

Printing clarity

Secondly, look at the printing on electronic components. Nowadays, many electronic components are marked with lasers or printed with special chip printers. The handwriting is clear and inconspicuous, and it is not easy to erase. The refurbished handwriting has a "sawtooth" feeling because of the corrosion of the cleaning agent, or the printing is fuzzy, with different shades, which is easy to operate.

Pin position

Looking at the pins, all the tin-plated pins that look relatively new must be refurbished goods, and most of the original electronic components should be "silver powder pins", which are dark in color but relatively uniform in color, with no oxidation marks or "flux" on the surface.

Production date and label of packaging factory

Check the production date and the label of the packaging factory. The label of genuine electronic components should be consistent with the production date, while the label of refurbished components is chaotic and the production time is different. In addition, although the front labels of refurbished components are consistent, the values look chaotic, or the production date does not match. Pay attention to counterfeit and shoddy electronic components.