IEC 1906 Award Presented to Sergio Longoria of ETS-Lindgren

Engineer Recognized for Outstanding Contribution to High-Altitude Electromagnetic Pulse (HEMP) and Intentional Electromagnetic Interference (IEMI) Standards Activity


CEDAR PARK, Texas, October 21, 2021 – The International Electrotechnical Commission (IEC) announced Sergio Longoria of ETS-Lindgren a recipient of the organization’s 1906 Award “in recognition of his valuable technical contributions to IEC SC 77C projects and for his technical support to IEC 61000-4-24.”  This prestigious award, whose name commemorates the IEC’s founding year, is presented annually to technical experts whose exceptional involvement in IEC activities have brought about significant advancements in international electrotechnical standardization.  Mr. Longoria, RF Filters Product Line Technical Manager, is based at ETS-Lindgren’s corporate headquarters in Cedar Park, Texas.


Edl Schamiloglu, Chair of IEC SC 77C and University of New Mexico School of Engineering’s Distinguished Professor and Associate Dean for Research and Innovation, said, “Sergio Longoria is a respected member of the US National Committee for IEC SC 77C.  The IEC 1906 Award honors Mr. Longoria's technical contributions to the committee's projects, in particular to 61000-4-24: Amendment 1: Electromagnetic compatibility (EMC) – Part 4-24: Testing and measurement techniques – Test methods for protective devices for HEMP-conducted disturbance.”


Dr. William A. Radasky, President and Managing Engineer of Metatech Corporation, added, “Sergio’s significant contribution to the protection of buildings from the E1 HEMP transients was with respect to how to define the proper loads for testing HEMP power filters.  As a former Chair of IEC SC 77C and current US expert, I speak for the committee when I say his contribution is greatly appreciated.”


Mr. Longoria participates as a technical expert to TC 77 Electromagnetic Compatibility, Subcommittee 77C (SC 77C), High Power Transient Phenomena. SC 77C develops environment, protection, and testing standards dealing with the disturbances caused by HEMP and due to intentionally produced high power electromagnetic (HPEM) transients.  He contributed significantly to the publication of IEC 61000-4-24:2015, Annex C, which addresses HEMP protection of antenna ports. 


SC 77C also publishes standard IEC 61000-5-10 Electromagnetic compatibility (EMC) – Part 5-10: Installation and mitigation guidelines – Guidance on the protection of facilities against HEMP and IEMI.  Mr. Longoria’s work on this standard included writing the content related to usage of RF filters for HEMP and IEMI protection of power, signal, and data lines.


“Being a member of TC 77 SC 77C has given me the opportunity to contribute to industry as well as be a part of a global community of HEMP, IEMI, and EMC experts,” said Mr. Longoria.  “This association also helps us at ETS-Lindgren stay abreast of emerging technologies and test requirements to ensure our products meet not only current standards, but future standards as well.  Ultimately, our customers benefit from our active industry involvement.”


For longer than 75 years, ETS-Lindgren has been manufacturing a wide range of test and measurement products renowned for setting the research, development, production, and service standards of the Government/Defense, Utilities, and EMC Testing industries.  Having the proven technical depth expected of an industry leader, with more than 50,000 RF Shielded installations worldwide, ETS-Lindgren can guide our customers to an optimal test and measurement solution for their specific product application.  Rest assured that we will provide continued support through our six manufacturing factories and team of more than 700 employees worldwide. 


For assistance with your next project, review the “Top 10 Considerations for RF and Facility Power Line Filters.”  ETS-Lindgren also offers many on-demand webinars with industry experts, including a series addressing HEMP and IEMI protection of facilities and critical infrastructure.  For more information, call +1 512-531-6400, or send an email to


About ETS-Lindgren


ETS-Lindgren is an international manufacturer of components and systems that measure, shield, and control electromagnetic and acoustic energy.  The company’s products are used for electromagnetic compatibility (EMC), microwave, wireless, and Magnetic Resonance Imaging (MRI) testing, electromagnetic field (EMF) measurement, radio frequency (RF) personal safety monitoring, and control of acoustic environments.


Headquartered in Cedar Park, Texas, ETS-Lindgren has manufacturing facilities in North America, Europe, and Asia.  The company is a wholly owned subsidiary of ESCO Technologies, a leading supplier of engineered products for growing industrial and commercial markets.  ESCO is a New York Stock Exchange listed company (symbol ESE) with headquarters in St. Louis, Missouri.  Additional information about ETS-Lindgren is available at www.ets-lindgren.comFollow ETS-Lindgren on Facebook, LinkedIn, Twitter, and YouTubeAdditional information about ESCO and its subsidiaries is available at




Janet O'Neil
Marketing Communications

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