New-Tech Europe Magazine | Q3 2020

EESeal - EMC/EMI Filter Insert from Quell, Supplied By Powell Electronics Andy Brayford, Global Applications Manager, Powell Electronics

For an EMC/EMI Design and Test Engineer, one of the most frustrating and expensive problems is a unit failing EMC/EMI testing while at an EMC test facility (MIL-STD-461 and DO-160 Conducted Susceptibility, Conducted Emissions, Radiated Emissions and Radiated Susceptibility). While following good EMI design practices on a new design can result in a pass the first time, legacy designs, commercial off-the-shelf (COTS), and competing design priorities can result in failures from time to time. When a unit is failing conducted (CE102) or radiated emissions (RE102), there are not many hardware solutions that can be implemented for solving the problem in time to re-test before leaving the EMC test facility. However, EESeals® from Quell can help solve these issues and are available in just a few days after a design is finalized, most often free of charge. Powell Electronics will work

closely with your design Engineers to understand what the EMI issue is that you are seeing and help you to understand what can be done using the EESeal to solve these issues. What is an EESeal An EESeal is an EMI Filter Insert (and Transient Suppressors) for connectors which are an easy retro fit compared to bulky adaptors, filter connectors and other traditional devices. The EESeal is made of resilient silicone rubber that is quick and easy to install, even in the field. Their patented construction allows them to survive even the most extreme environmental abuse. By using just your fingertip, you can easily install an EESeal insert into your connector in just seconds. Virtually invisible once fitted, the EESeal inserts are made from the same super- resilient material used in the Interfacial seals of high reliability, ruggedized

military connectors. The secret behind EESeal is Quells innovative electronic packaging technology, which suspends, isolates, and protects the discrete electrical components which are inside. How It Works Each individual EESeal is designed specifically for your application and is manufactured to fit your connector perfectly. Quell’s EESeal is silicone rubber packaging technology with 0402 and 0603 chip components placed directly into the silicone rubber, which protects and suspends the components so that they can withstand harsh, rugged environments such as those seen in military and aerospace applications. The compressive forces of the silicone rubber help maintain a reliable connection even under the extreme abuses that are common in such industries .This allows the EESeal

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