How about the quality of chip "refurbished goods"? What are the common types of refurbishment?

Date：2021-08-10 15:03:43Views：2669

In the semiconductor shortage market, more and more counterfeit chips began to circulate in the electronic field. This will bring quality risks to more electronic products and seriously damage the interests of manufacturers and users. San Xin is an industry slang. It usually refers to chips without original packaging. It will also be used to refer to chips eliminated due to quality problems in the assembly line and refurbished chips. Some second-hand refurbished chips can be used for new equipment, but the service life of consumer grade chips is about 5 years. If they are used after refurbishment, their service life and performance parameters will be greatly reduced. What is the quality of the "refurbished goods" in the chip? What are the common means of refurbishment? If you are interested in what this article will cover, read on.

What is the quality of the "refurbished goods" in the chip? First of all, refurbished chips can not replace new chips. It is recommended to stay away from new products as far as possible. IC refurbishment is accompanied by serious environmental pollution, and its business chain is often full of fraud and other immoral behaviors. Don't be greedy for small gains and suffer big losses. There are several common means of renewing goods:

1、Disassembly products: the used products are removed from the recycled PCB board, and then renovated through processes such as grinding, coating, retyping, re tinning and foot trimming;

Features: the model has not changed. There are traces of grinding and recoating on the surface of the product body. Generally, the pins will be re tinned or replanted (depending on the packaging);

If they are screened through function test, they can generally be used normally, but the defect rate may be higher and the reliability is not so good. That is why some customers know that they are refurbished goods, but they still buy them. Some discontinued materials can't be helped, but only refurbished ones;

2、Counterfeit products: after polishing and coating renovation, model a material is marked with model B material (high price and high sales). This kind of counterfeit product is terrible. Some functions are wrong and can't be used. It's just like packaging;

There are also some packages that can be directly cleaned without grinding and coating, and then marked with other models. Generally, the grade is changed more (i.e. commercial grade is changed to industrial grade, or industrial grade is changed to automobile grade, military grade, etc.);

3、Old age becomes new year: the price of old-age materials is not good and it is difficult to sell. After polishing and coating, type again and type new year's materials (the price is higher than that of old-age materials, and customers are more willing to accept new year's materials);

Features: there are grinding and coating marks on the surface of the body, and the pins are generally untreated (unless the pins of the old material are oxidized or deformed before). This material can generally be used normally, so there is a saying in the market: "protect the original feet". I don't know if you have heard it?

4、Re tinning / replanting the ball: some old materials or materials that are not well preserved, the pins are oxidized and affect the operation. What should I do? After treatment, re tinning or replanting the ball, the pins look beautiful and easy to use;

Features: the body surface of this material has not been treated, but the pins have traces of re tinning or re planting balls. If it is not handled well, there will be residual tin slag on some pins. The general function is normal, but the reliability is not so good and the use risk is high. Therefore, there is a common saying in the market that "keep the original surface and original words";

5、Lead to lead-free: it usually occurs in BGA packaging, especially for the aged materials. Replace the lead-free solder ball with the lead-free solder ball, that is, replant the ball;

Features: the screen printing and typing format may be different from the new version. There is no environmental protection mark. The surface of the body has not been treated, but the lead-free tin ball is replaced by the lead-free tin ball;

6、Original defective products: after the original factory has been tested, some products with inconsistent parameters will be eliminated. Some of these materials will be scrapped by the original factory, while some will flow to the market through special channels. Because there are many and miscellaneous batches, someone will Regrind, coat, mark a unified batch and repack them for sale!

Features: the defect rate is relatively high, there will be traces of regrinding and coating on the body surface, and the pins are generally not treated;

7、Original factory mantissa or samples of multiple batches: because there are many and miscellaneous batches, some original manufacturers will re polish the coating, mark a unified batch, make it into a complete package and pack it for shipment;

Features: the function is normal, but there are traces of regrinding and coating on the body surface;

Common refurbishment phenomena: grinding marks; Recoating marks; Replant the ball; Re tinning and so on. In fact, refurbished goods have a common feature, that is, most of the labels are imitation, and a large part of the materials can be known through the labels. About 80% of fake goods can be identified through the label photos.

Conclusion: at present, the types of goods in the market include: original goods, bulk new goods, imitation Shanzhai goods (domestic goods), label goods, old and new goods. Except for the original goods, almost all other goods are at risk. In recent years, the crackdown on fake and shoddy components is much more stringent than before. Nevertheless, the existence of fake products cannot be eliminated. It is recommended that you try to buy components from formal channels to reduce the risk of buying fake goods. Chuangxin testing always adheres to the purpose of "professional, authoritative, efficient and innovative". It has invested heavily in purchasing international advanced testing equipment. The testing is in strict accordance with international testing standards and methods. It has obtained CNAs certification and international mutual recognition qualification. Its customer base covers many countries and regions at home and abroad. It is a professional IC testing institution with excellent quality and high popularity in China.