When counterfeit electronic components 1st began surfacing it was frequently easy to spot them. The markings on the chip would be blatantly incorrect such as the wrong logo for the business who supposedly produced the item or a marking which would just rub off. As the counterfeiters have gained sophistication, their fake elements are tougher to spot. Even checking the markings on the chip (Blacktop Markings) now requires rigorous testing procedures.
Counterfeit components have come to be a substantial concern in the electronic component industry. Sometimes these counterfeits are clones – attempts to copy the genuine components. In other situations, the counterfeiters will re-mark a component. The counterfeiter will take a component designed for a distinct objective and modify the markings on portion so it will appear to be a further portion.
Why does this matter? Electronic components are built to precise standards to perform highly certain jobs. These components then undergo rigorous testing to assure they will execute as count on below all circumstances. You would not make an airplane with untested screws that almost fit. It is potentially much more harmful to use electronic elements which are virtually appropriate.
The US military has developed detailed specifications for how to test components. These specifications have turn into the market normal, made use of to test each military and non-military components. The military standards are essential in figuring out the authenticity of components. Reputable electronic component testing firms adhere to these published specifications. Nonetheless, there are variations and proprietary approaches of how to implement those specs and maintain high-quality handle in the course of testing.
(Note: The following test is made use of as basic instance for the purposes of this short article. Some distinct steps and proprietary facts has been omitted.)
Marking Permanency (Resistance to Solvents) Test:
The goal of a Marking Permanency test is to verify that the parts when subjected to solvents will maintain their correct markings. Counterfeit components normally have new markings which are not permanent they will dissolve when the solvents are adequately applied. Also, the solvents will reveal proof of earlier markings which have been sanded off or otherwise replaced by the false markings.
Several Military Standard procedures are applied which incorporate processes of working with a number of chemical substances mixed appropriately and in detail is in accordance with the specifications. These chemicals consist of Aliphatic alcohol, mineral spirits, ethyl-benzene, organic solvents, de-ionized water, propylene glycol monomethyl either, or monoethanloamine.
Once appropriately mixed the elements are submerged in a 3 phase approach and analyzed in accordance with MIL-HBK-130 to uncover evidence of damage to the device and any specified markings which are missing in complete or in part, faded, smeared, blurred, or shifted (dislodged) to the extent that they cannot be readily identified from a distance of at least 15.0cm (six inches) with normal space lighting and with out the help of magnification or with a viewer possessing a magnification no higher than 3X. In Amorphous C-core , a strategic acetone wash will be employed to reveal sanding marks and facets of prior markings.
Blacktop marking is just one particular test in a multi-step approach utilised to discover counterfeit electronic components. Other tests consist of closely checking the physical dimensions and the packaging as properly as the efficiency of the chips. Counterfeit electronic elements are on the rise in both military and civilian goods. As the counterfeiting gets additional sophisticated, testing homes continue to create finely tuned procedures to separate the fake goods from the real parts.