radiated emissions from the product were barely distinguishable against ambient background noise after the addition of the EESeal.
Opting for a simple solution like EESeal allowed the customer to quickly get through their round of EMC testing and prove compliance. Because EESeal is manufactured to fit standard or custom connector form factors, it can be easily implemented in an assembly without major design changes.
How filter connector inserts aid EMC compliance
Noise reception and production by cabling and connectors can be among the most difficult EMC challenges. When faced with excessive emissions or reception of EMI in cabling or connectors, many companies take one of the following paths to reach compliance: Expensive simulations, redesigns, and prototyping Placement of large, expensive filters on the PCB to remove noise Use of shielding compounds or ferrites that increase assembly costs Complete redesign of the enclosure, cable, or connector to add shielding In these cases, the path to production is longer due to the additional design time, prototyping costs, and testing costs. With its EESeal and EESeal+, Quell has helped multiple aerospace and automotive customers pass EMC qualification and comply with industry standards without incurring expensive and time-consuming design changes. EESeal can function as an add-in replacement for standard filtered
www.cieonline.co.uk.
connectors, or as a last-minute solution to challenging EMI problems. All EESeal products from Quell are available from stock at very short lead times in Europe from Powell Electronics. Their detailed key benefits are:
High attenuation
The filters provide 40 to 45dB noise attenuation in targeted frequency ranges that reduce both radiated and conducted emissions as well as susceptibility. EESeals can also withstand the harsh environmental demands found in aerospace systems.
Targeted filtering
EESeal products provide broadband or narrowband noise attenuation centred up to high GHz frequencies. These materials can be targeted to specific noise sources and frequency bands without affecting the functionality of other portions of the design.
Flexibility
EESeal products can be applied at the front or rear of a connector assembly. In this way, an EESeal product can act as either a shunt capacitor filter applied along the connector pins, or as a pi filter applied in the back side of the connector housing.
Grounding and transients EESeal products do more than just filter emissions and aid susceptibility testing. These devices can also function as a grounded region inside the connector body. Additionally, they can provide protection against strong ESD events.
https://powell-electronics.eu/ Components in Electronics September 2023 65
When speed and precision mean everything
Connectors of the new CONNEXIS product range: Perfectly optimised for automated production
Phoenix Contact’s new crimp- based PCB connectors for cable assemblies simplify and accelerate automated production processes. Different pitches, designs, and contact surfaces allow for various applications in robotics, elevator technology, or battery management.
For additional information call 01952 681700 or visit
https://phoe.co/Connexis-uk
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