IC authenticity identification guide electronic component identification and detection technology

Date：2022-03-07 13:58:54Views：905

There are a variety of IC chips on the market. If you don't pay attention to the distinction, it's difficult to see the difference between various materials, whether they are true or false, brand-new or refurbished. In the IC procurement process, the most worrying thing for purchasers is not the price, but the product quality. The manufacturing process of chip is very complex. It needs to go through thousands of processes. Monocrystalline silicon processed by complex process is widely used. According to the American Semiconductor Industry Association (SIA), American chip companies lose $7.5 billion a year due to counterfeit products. If defective chips are installed on aircraft, cars or medical equipment, it will become a matter of life and death.

We can judge through many aspects. For example, after we buy it back, we open the packaging box and take out the chip. After taking it out, we carefully observe the printing on the chip. If it is genuine, the printing on the chip should be very clear without any blur. However, if there are friction marks or grinding marks on it after buying it, or it seems that the printing is particularly bright and unnatural, it may not be genuine. Then there is another way to judge whether it is genuine, that is to see if there are some traces of Samsung in the pin of the chip. If it is not genuine, the chip pin is likely to look particularly unnatural or the color is particularly uneven, which is likely not to be genuine, on the contrary, it is likely to be genuine.

Next, there is another way to judge, which is to look at the label of the packaging factory and its production date. If it is genuine or produced normally, its production time should be consistent. If the production time is inconsistent, there may be some problems. Finally, take a look at the thickness of the chip. If this kind of chip is not polished, its thickness should be very uniform and full. However, if you buy a second-hand chip after polishing instead of buying an authentic one, it is likely that its thickness will become thinner, because a certain thickness may have to be polished during polishing, Therefore, use vernier caliper to measure the thickness, and then compare the dimensions on the manual to judge whether it is genuine or not.

As like as two peas, the appearance and size of the chip are almost the same.

1. Looking at typing, generally renovated and re typed (white words) can erase words with "tiannashui" (chemical diluent). Generally, renovated goods can't be erased with the original goods.

2. Look at the lead angle. The pins of the original goods are very neat and straight, while some of the refurbished ones are irregular and crooked.

3. Look at the positioning holes. The positioning holes of the original goods are relatively consistent. Some of the renovated ones are different in depth or are really polished flat at all. If you look carefully, you can see the traces of the original positioning holes.

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