Gardien Services USA

The Gardien Group is the world's largest provider of independent testing services to the PCB manufacturing industry.

Test Services

rom small batch testing in one of the company’s 24 facilities located throughout Asia, North America and Europe, to fully integrated inspection within a PCB production environment, Gardien’s 500 employees serve customers supplying the automotive, defense, telecommunications, aerospace, medical, computer and industrial markets worldwide.

Dedication to test and inspection

Gardien’s team draws on a wealth of expertise and decades of experience enabling you to offer your clients the added security of Gardien’s independent Guarantee of Quality

Total service

From small batch testing in one of our facilities to fully integrated inspection within your own PCB production environment, Gardien gives you the service you need.

Gardien Services USA Postings

2 technical articles »

What is Kelvin Test?

Jul 14, 2015 | Rick Meraw, Todd Kolmodin, Manfred Ludwig, Holger Kern.

The PCB industry is ever changing and adapting to new technologies. OEM specifications and requirements have also advanced due to these technologies. In some cases the OEMs are asking for a low resistance test to be performed on some or all electrical test nets of the PCB or on the holes of the PCB. This requirement is typically not well defined on the fabrication drawing and that leads to misleading conclusions by the fabrication house (...)

This paper will use the data gathered by the company’s operations to outline what a 4-wire Kelvin test is and how it can be used. Several examples will be illustrated of what the 4 wire Kelvin test can and cannot do. A clear definition of what limitations are present during the testing operation will be defined. The paper will assist designers in understanding how the low resistance test can assist them and also identify causes that can identify unwanted concerns/issues....

IPC 9252A Electrical Test Considerations & Military Specifications versus Electrical Test

Apr 04, 2013 | Todd L Kolmodin, VP Quality

This paper will outline and define what requirements must be adhered to for the OEM community to truly achieve the IPC class product from the Electrical Test standpoint. This will include the test point optimization matrix, Isolation (shorts) parameters and Continuity (opens) parameters. This paper will also address the IPC Class III/A additional requirements for Aerospace and Military Avionics. The disconnect exists between OEMs understanding the requirements of their specific IPC class design versus the signature that will be presented from their design. This results in many Class III builds failing at Electrical Test... First published in the 2012 IPC APEX EXPO technical conference proceedings...

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