IC chip verification scratch testing and acetone testing principles

Date：2023-05-05 15:46:03Views：388

IC (Integrated Circuit) authenticity detection is a very important aspect in modern electronic manufacturing industry. To ensure the quality and reliability of electronic products, consumers and manufacturers are very concerned about IC authenticity testing. However, there are a wide variety of IC products in the market with varying quality, so how to distinguish the authenticity of IC has become an important issue. Among them, scratch test and acetone test are two commonly used methods for IC authenticity detection. This article summarizes some materials and hopes to provide valuable references for readers.

Scratch testing is a method of detecting the authenticity of an IC chip by scraping it on its surface. The principle of scratch testing is that there is usually a metal coating on the surface of the IC, which is used to protect the surface of the IC and improve its conductivity. When the scraper scrapes the surface of the IC, the metal coating may be scraped off, causing a change in the conductivity of the IC. This change can be detected by the detector and is considered one of the indicators of IC authenticity.

Generally, on the surface of a chip, special instruments or tools are used to scratch, and then the position and shape of the scratches are observed to detect the authenticity of the IC. The advantage of this method is high reliability and will not affect the chip. In scraping tests, scrapers are usually made of soft cloth or sponge and used to gently scratch the surface of ICs. If the surface of the IC is worn or damaged, the scratch test may display abnormal signals or noise. At the same time, the characteristics of IC chips are limited and are easily imitated or deceived.

Acetone testing is another IC authenticity detection method, which is based on the principle that there is usually a chemical coating on the surface of the IC, which is used to protect the surface of the IC and improve its conductivity. When the surface of an IC is corroded by acetone solvent, the chemical coating may be removed, resulting in a change in the conductivity of the IC. Acetone testing is usually used to detect high-quality IC products. In acetone testing, the IC is immersed in acetone solvent and then observed for any changes in its behavior. If the surface of the IC is damaged or worn, acetone solvent may corrode the surface of the IC, leading to its failure or abnormal signals. The advantages of this method are simple equipment and easy operation, but its disadvantage is that it causes certain damage to the chip and has a long detection cycle.

In summary, scratch testing and acetone testing are two commonly used methods for IC authenticity detection. In addition, we can also detect the authenticity of ICs by observing their appearance, measuring their parameters and functions, and other methods. However, regardless of the method used, consumers should be cautious when purchasing electronic products from multiple aspects such as authenticity, cost-effectiveness, and usability, ensuring that the actual purchased products meet their needs and comply with relevant national quality standards.