Implementing faulty/counterfeit ICs in the supply chain can be dangerous. What are the options to avoid this?

It is well known that it can be difficult to find a genuine and reliable supply of electronic components particularly when they are scarce or out of production by the original manufacturer. Although refurbished components are sometimes frowned upon for being 'unsafe' and therefore are not a part of the PCB repair process, sometimes this can be the only solution to get around components which are scarce or hard to source.

Especially for a component supplier or broker, the biggest risk is loss of credibility; should a faulty, substandard or counterfeit IC be sold to one of the customers, and hence to avoid or substantially reduce the risk of this to occur; component test is advised. But what are the different tests that can be performed? Listed below are a few of the important tests that are done on a sample or even the whole batch at times to determine authenticity:

Visual Inspection : This is a very effective component testing method, by using optical inspection it can be determined if the components are in good condition, whether there are any damages or any minute defects.

XRF Analysis : This is a non-destructive method to determine what alloy the termination consists of. This is particularly useful for businesses belonging to the high reliability industries such as defence, medical, aerospace, Oil & Gas sectors.

Solderability Test : This test verifies whether the component is re-solderable and also if it is good enough to be placed back on a PCB with reflow.

Electrical Test: Also known as BEST (BGA & Electrical Silicon Test) used to check the electrical parameters of every pin to pin e.g. current, voltage, diode resistivity, and silicon connectivity. 

Key Function Test : Some devices may need tested by creating a circuit to ensure that they are operating as expected. With the help of the component datasheet, a circuit can be created and the key aspects of the IC can be checked. For example MOSFETs can be tested to confirm that they still meet the manufacturer's specifications.

Flash Memory Test / Memory Programming : Components can be programmed to check for counterfeit programmable components. Device ID codes can confirm if the devices were blank or programmed. Already programmed FLASH parts can be erased back to factory default settings.

W - www.retronix.com

E   - info@retronix.com, sales@retronix.com

Contact us - http://www.retronix.com/contact-us

Know more about our IC Tests (Click here)

YouTube | LinkedIn | Twitter

High Reliability industries are vulnerable to counterfeit ICs

High reliability industries such as the Defence, Medical, Aerospace, Oil & Gas sectors rely on electronic parts that are no longer produced by the original manufacturers or even sold by their authorised distributors. That reliance is based, in part, on the long life cycles of these systems. An electronic part may be manufactured for two years, but many defence, medical and aerospace systems which use these parts may be in service for more than two decades. Older components often need to be properly tested and would require retinning to avoid solderability issues like tin whisker.

These high reliability industries are critically dependent on a technology that obsoletes itself every few years or even faster in some cases, is made in locations which are not secure and over which they have no market share influence. 

To source scarce parts, purchasers in these high reliability industries often buy from independent distributors or brokers. This introduces high risk of faulty or counterfeit components being acquired.

W - www.retronix.com

E   - info@retronix.com, sales@retronix.com

Contact us - http://www.retronix.com/contact-us

Know more about our Automated Retinning (Click here)

YouTube | LinkedIn | Twitter

Retronix Develop Unique Re-tinning Tool for Aerospace Customer

An Aerospace company had a large amount of LGAs with a gold pad finish that they wanted to convert to a lead finish. They wanted the re-tinning to comply with the GEIA standard, the issue was that the components were very small and any standard tooling would not have been able to perform the service on the components.

Retronix developed a very cost effective piece of tooling that held the row of the components and allowed them to be processed automatically without causing any issues.

The components were then XRF tested to verify compliance and shipped to the customer within 5 days.

Anti Counterfeit IC Testing : Visual Inspection

As part of the Retronix Anti-Counterfeit IC testing service a customer approached us asking for our level 1 authenticity test, specifically the visual inspection service.

The customer send us approximately 3000 qty - NUD4700 type parts and asked to pick a random sample of 11 for visual inspection to check for authenticity. The reel information and datecodes given were the following: 

    Where :

  

    M = Date Code

    MNH = Device Code

    . = Pb-Free Package

The first check straight away points out certain discrepancies.  Markings do not match the information on the datasheet, and the direction of the text with reference to the Anode was found to be incorrect, further inspection about the device itself revealed the following:

As it can be seen from the datasheet image and from the image that is sourced from Mouser Electronics, the bottom side of the device should be connected to the Cathode and continue onto the entire bottom side. But as can be seen with the image of the device on the right that these devices have two isolated pins with the bottom side being the outer casing and not a contact, this shows us that the device in question is not as per standard and is considered suspect.

Continuing investigation of the device for further inspection shows:

1                                              2        

Device contacts are found to be incorrect, Anode and Cathode are formed into a gull wing as can be seen in 'Image 2' and not as they originally should have been as shown in 'Image 1'

Conclusion :

The visual inspection of the sample puts the batch as suspect and cannot be termed original as per standard datasheet and information available about the device. The report along with all photographic evidence and technical information was provided as a report to the customer as suspect counterfeit. This gives the customer a good insight into future purchases from the buyer and also this current purchase which could have caused big issues in case the customer would have gone on and implemented the same into his supply chain.

Are you interested in getting your IC purchases tested and have complete peace of mind? We have a huge range of IC testing services which can be found  here : Tell me more

In case you need to know more about our services and want to get in touch with our test manager then send in your enquiry using our contact us page : Click Here

For more info about Retronix - Click Here

We welcome you to join our LinkedIn group Click Here

Contact us : Click Here | info@retronix.com | sales@retronix.com

YouTube | LinkedIn | Twitter

Retronix Exhibits at the SAE 2012 Counterfeit Parts Avoidance Symposium

Retronix was one of the exhibitors at the inaugural Counterfeit Parts Avoidance Symposium held November 2^nd in Phoenix AZ. Speakers included Nicholas Torelli Jr, Director of Mission Assurance, Systems Engineering at the DoD and Phil Zulueta, Chairman of the SAE G-19 committee. Speakers discussed the growing threat of counterfeit and fraudulent ICs and components in the US supply chain and steps being taken to counter the threat.

Retronix presented its capabilities and extensive experience in Counterfeit Parts analysis, IC test and detection and its other component manufacturing services and Safe IC Recovery process for hard to source ICs.

    SAE 2012 Counterfeit Parts Avoidance Symposium

   Retronix at SAE 2012

Learn more about IC Testing here
Learn more about IC Recovery here
Watch the relevant videos