5 Techniques Used to Detect Counterfeit Electronic Components


Reading time ( words)

We are well aware of the threat of counterfeit components to electronic supply chains. Counterfeiting is a longstanding problem with the ability to grow in magnitude and scope if we are not vigilant. Which in turn, presents the electronic manufacturing industry with concern over genuine economic and innovative growth.

Although government pressure and private resources like those offered by ERAI Inc. have helped minimize the risk of counterfeit components from entering the supply chain, there is still and will most likely continue to be, a prominent threat.

So, what can you do to minimize this risk? Well, one of the most important things you can do to protect your supply chain is understand the ways in which you can detect counterfeit parts. In this article, we explore five different ways to detect counterfeit electronic components, so you can stay one step ahead in protecting your supply chain.

1. Sizing Discrepancies

By measuring the component height, length and width and then comparing these to the manufacturer’s specifications can give an indication that the part is genuine. If the measurements don’t match the manufacturer’s specifications, or there are variances across the batch you have received, then further investigation would be required.

2. Marking Authenticity

Blacktopping is a common technique used by counterfeiters which involves a thin layer of blacktopping material to cover the original part numbers and details. This is then re-printed with false markings in order to purposefully present the part as something that it isn’t. Arguably blacktopping is one of the most common techniques used by counterfeiters. This is obviously a cause for concern as the part you receive may be completely different to the part you ordered.

So how do you test for marking authenticity? A common test is to use an Acetone wash which is applied to the surface of a component helping to remove false printing or reveal the remnants of previous markings. 

3. X-Ray Inspection

X-Ray inspection is a technique to examine the inner workings of the component. X- Ray can be used to show evidence of counterfeiting by highlighting the die, wire bonds and and any possible signs of delamination. Why is this important? Well, by examining the internals and comparing them to manufacturer specifications or controlled images of authentic parts, you will be able to determine whether the part is genuine.

4. Electrical Testing

Conducting electrical testing on suspect components can give you a better idea of whether the part is genuine or not by comparing the results to the tolerances recorded by the manufacturer. If the results are significantly different to the industry specifications, then further investigation would be required.

5. Decapsulation

If the other checks mentioned above are not conclusive, or you still have concerns over the authenticity of a part, it may be necessary to carry out decapsulation or 'de-lidding' of a sample component.

There are various techniques to carry out this process, often involving an acid solution, which therefore makes the process destructive. However, once this process is complete you can see the inner workings of a part using a high-powered microscope to visually inspect and verify factors such as manufacturer markings, defects to the die, correct typography, and accurate and authentic part numbers.

Identifying counterfeit components can be difficult as there may be more than one reason behind components failing individual tests. Component manufacturers have been known in the past to make production errors and then remark components themselves. So, not everything that looks suspect, is necessarily a counterfeit device.

However, by using multiple detection tests to examine incoming components you stand a far better chance of minimizing the risk of suspect devices entering your supply chain. You also provide your customer, the end user with greater confidence that when they take the product out of the box, or install it alongside their machinery, it will work first time, error free.

This article originally appeared on the JJS Manufacturing blog, which can be found here.

Share


Suggested Items

Super Dry’s Novel Approach to the Drying Process

02/07/2018 | Pete Starkey, I-Connect007
Pete Starkey spent a few minutes at the SuperDry booth on the first day of the productroncica show, and chatted with old friend Rich Heimsch, who taught the old dog a few new tricks about the drying process.

Two Questions to Ask Yourself with PCB Continuous Strips of Parts

12/11/2017 | Duane Benson, Screaming Circuits
Sometimes, you don't want to buy a reel, full or partial, but still want your PCB parts all in one continuous strip. Everyone wants to use up their odds and ends, but once those are gone, it's easier for you if each part is one strip. If you want to save a little money and can use a longer turn-time, you might want to choose a short-run production service with continuous strips.

Creating the Perfect Solder Joint

11/03/2017 | Stephen Las Marias, I-Connect007
From a visual standpoint, a good solder joint should be smooth, bright, shiny, clean, and have a nice concave solder fillet. But how do you ensure that inside those joints, good intermetallic bonds are formed? Solder joints play several different roles, and they represent several different opportunities to be a problem, a partial improvement, or a complete improvement. Since all solder joints aren’t created equal, the first step is to understand what is expected or required of that joint.



Copyright © 2018 I-Connect007. All rights reserved.