Get the facts on our various filtered circular connector designs.

Learn how APITech's circular connectors address strict safety requirements on modern aircraft

Contact APITech’s application support team to discuss your requirements today.


APITech offers custom circular connectors in EMI filtered or unfiltered styles, including military standards.


APITech’s filtered compact shell connectors provide an effective filtering device that reduces the amount of real estate required within a product enclosure. Using our expertise in EMI filter design and manufacturing, we offer planar-style filtered arrays, available in C and Pi circuits up to 200nF in most configurations. Other filter circuits including transient protection are available.

Competitive Advantage

APITech’s filtered EMI connector offerings are fully vertically integrated and manufactured in the USA. Components including capacitors and shells are manufactured by our State College, PA facility, providing our customers with high-quality parts, with the industry’s shortest lead times.

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Explore Our Products


Transient Survival Connectors: Meet standards for RTCA/DO-160 Level 4 lightning requirements.





Black Nickel Zinc Connectors: RoHS-compliant, cost-effective, and sustainable plating alternative to Cadmium.  
  Composite Shell Connectors: Designed to replace traditional metal connector shells for substantial weight reduction. Composite Shell




Filtered Circular Connectors: Explore APITech’s premium line of filter circular connector offerings.  

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APITech always strives to be the innovator at the forefront of Electromagnetic Spectrum technology. Stay in touch to learn more.

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