8 Steps to Detect & Avoid Counterfeits

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nimantha.d
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Re: How much, and what kind, of testing works?
nimantha.d   2/2/2013 10:32:54 PM
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Why not Hash ? Do you mean to say it does not have any chance or it does not have the capabilities to be so ?

hash.era
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Re: How much, and what kind, of testing works?
hash.era   1/30/2013 10:44:06 AM
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I dont think it will ever get involved nimanthad

Barbara Jorgensen
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Just to make it more complicated...
Barbara Jorgensen   10/3/2012 2:41:10 PM
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Testing may also have to include test for a specific application. I recently heard a story where a defense contractor was testing a COTS part for a defense appication. The part kept burning out. So, as many of our readers point out here, making sure something works is only part of the solution.

ddeisz
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Re: Electrical Test System
ddeisz   10/3/2012 12:43:25 PM
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The ABI system is based on a software library of parts for comparison generated by ABI and not the original semiconductor manufacturer. The comparison they are doing to what they think is a good enough set of characteristics. It may or may not be the extent to which the original product was tested. It is better than doing no electrical test and probably reasonable for simple devices, but it does not test for long-term reliability and handling issues and it is not what the original OCM did for testing the product. 

There is no easy pill to swallow on genuinely doing full electrical testing, specifically for long-term reliability and handling issues.

This ABI system is a nice baby-step, but it does not cover all the electrical testing issues and certainly does not cover all parts.

Dan Deisz

Rochester Electronics

Bolaji Ojo
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Re: Electrical Test System
Bolaji Ojo   10/3/2012 12:32:10 PM
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DavidF, You are right and thanks for the clarification. I believe most experts on anti-counterfeiting would agree with the position that a quick and inexpensive test should first be carried out on suspected counterfeit parts before a more intense and likely expensive test is carried out. The most basic one is just to see if it works. If it doesn't work, it may be because of a variety of factors but at least it can be put aside for additional testing. This is also another way to isolate an entire batch for review.

DavidF
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Re: Electrical Test System
DavidF   10/3/2012 11:27:10 AM
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Bolaji, I think we all agree that no one test alone is sufficient in all cases. I am just suggesting that one quick way to see if it is going to function is to plug it in and exercise it before spending the money for the other test methods whose capitol equipment costs are > 50k and often over 100K.

Bolaji Ojo
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Re: Electrical Test System
Bolaji Ojo   10/3/2012 11:20:25 AM
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DavidF, People often regard warily any system or anyone that claims to be able to quickly test and confirm the authenticity of anything, not to mention parts. Some experts believe the component may even work as intended but does that mean it is genuinely from the vendor? There are counterfeits that are so well made they even fool the original manufacturer!

Bolaji Ojo
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Re: How much, and what kind, of testing works?
Bolaji Ojo   10/3/2012 11:18:11 AM
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ddeisz, I think No. 4 question on your list is probably one of the most important ones the distribution market and customers are avoiding. Who's going to pay for tests and who will stand by the results of such tests. The component buyer isn't going to pay for tests because they believe they automatically should get authentic parts while the components suppliers will never admit to being used as the conduit for fake parts. Distributors too (unless they are shady ones) will not readily admit to being the source of fake parts entering the system. So, where does the buck stop?

Beverley Scott
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How much, and what kind, of testing works?
Beverley Scott   10/3/2012 10:54:27 AM
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Hi ddeisz

I agree in order to minimise counterfeits entering the supply chain standard tests should be undertaken on electronic components by the distributor. Our in house electrical testing machine from ABI named the SENTRY counterfeit IC detector can help detect counterfeit components.

A wide range of packages can be tested including Dual In Line, SOIC, PLCC and BGA's. The machine allows us to measure the unique electrical signature of components allowing us to compare against known genuine components.

Also if we discover components that we believe need further verification, we will offer further analysis such as X Ray & X Ray Fluorescence testing, Destructive Analysis, Thermal Cycle Testing, Burn In and Fine Gross Leak.

The electrical testing is standard within the Cyclops quality procedures and as mentioned, once again, no test can guarantee 100% that a component is authentic. However, all measures should be taken to minimise the risk.

For more information on the SENTRY machine click here

DavidF
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Electrical Test System
DavidF   10/3/2012 9:35:01 AM
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I know of a test dystem that verifies components fast and accurately to their Specs. No false positives or negatives. Liobrary of components is over 50K parts!!!

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