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Component experts uncover the routine of counterfeit chips for you

Release date:2021-12-28Author source:KinghelmViews:385


Common chip counterfeiting methods


                                         


一、Material a counterfeit material a

  • Tailings or bulk materials of the original manufacturer: the original packaging has been disassembled or there is no original packaging, but the product function and yield may be low due to storage time or processing process;
  • Scrap or defective products reported by the original factory: mainly products that have not passed the factory inspection, such as scrap after reliability test, poor packaging quality, test defective products, etc;
  • Refurbishment of original materials: refurbished goods, second-hand goods refurbishment;
  • Examples of counterfeiting:                                              

                                                 
                                            

                                           
Left: before the chip is opened, the IC screen print is k9k1208u0a-yib0, 64M;                                         
Right: after the chip was opened, it was found that the chip was k9f5608u0a, 32m.                                          


二、Material B counterfeits material a

  • Fraudulent use of trademarks and packaging: materials produced by informal manufacturers use the trademarks and packaging of formal large manufacturers.
  • Refurbishment of fake goods: reprocess the recycled e-waste, such as grinding surface, pulling feet, plating feet, connecting feet, grinding words, typing, etc., into new materials. (processing the appearance of the chip makes the chip look more beautiful and even achieves the level of false truth. Some even include vacuum bags, label making, foam, carton and other processes).
  • Examples of counterfeiting:                                              
                                                    
                                                 
    Through comparison, it is found that the aeroflex} IC in the figure above is actually an IDT chip.                                           


                                                 

                                                 

Identification method


                                                 


1、 Appearance inspection: confirm the silk screen information, coding rules, appearance dimensions, reliability report and PCN (EOL) of the specification. Observe and compare the appearance.                              

                                         
Example 1                                       
                                                

                                                 
The relative position of the letter "R" in the figure should be low, and the printing of genuine materials should be aligned                                             
                                          
Example 2                                               
                                                 
                                                  

There is a large stain on the surface of the material in the figure.                                                
                                             
Example 3                                               
                                                 
                                                  
                                                 
The grinding trace on the surface of the material in the figure is obvious.                                                 
                                         
2、 Screen printing erasure test (MPT test): the screen printing of counterfeit products is reprocessed. If the screen print can be erased by MPT test, it indicates that the material is counterfeit.                                          
                                        
Example 1                                        

                                         
                                                  

                                                 
The item in the drawing is not marked after MPT test. It is a fake item                                              
                                         
3、 Screen printing erasure test (MPT test): the screen printing of counterfeit products is reprocessed. If the screen print can be erased by MPT test, it indicates that the material is counterfeit.                                          
                                         
Example 1                                       

                                         
                                                  
                                                 
The materials in the figure are also products with ATMEL on the surface, and the function of bad products is invalid.                                                                                               
Example 2                                                
                                                 
                                                  

                                                 
After decap of the item in the figure, it is found that the bad product is actually catalyst.                                               
                                         
4、 X-ray inspection: check die size and position, number and position of wires, etc.                                        
                                       
Example 1                                        

                                         
                                                  

                                                 
As can be seen from the above figure, X-ray # found that the chip on the right is indeed die, which is a scrap                                             
                                         
5、 Electrical / function test: test the electrical parameters and functions of materials and parts according to the product specification.                                                                              
It is better to obtain golden samples for comparison test by using the above means.                                       
                                        
In conclusion, different identification methods achieve different degrees.                                         
                                          

                                 

源:质链网

The "kinghelm" trademark was originally registered by golden beacon company. Golden beacon is a direct selling manufacturer of GPS antenna and Beidou antenna. It has a very high popularity and reputation in Beidou GPS navigation and positioning industry. The R & D and production products are widely used in BDS satellite navigation and positioning, wireless communication and other fields. The main products include: rj45-rj45 network, network interface connector, RF connector adapter, coaxial cable connector, type-C connector, HDMI interface, type-C interface, pin and bus, SMA, FPC, FFC antenna connector, antenna signal transmission waterproof connector, HDMI interface, USB connector, terminal line, terminal board terminal, terminal strip, RF RFID tag Positioning navigation antenna, communication antenna connecting wire, rubber rod antenna, sucker antenna, 433 antenna, 4G antenna, GPS module antenna, etc. It is widely used in aerospace, communication, military industry, instrumentation, security, medical and other industries.

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