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Small Corporate Member Small Business

Sentinel Connector Systems
Member Since: 2014 
1953 Stanton Street
York, Pennsylvania 17404


Robert J. Brennan

Chief Financial Officer:
Rod Brandstedter

AFCEA Contact:
Dave Jeskey

Business Focus:
Sentinel® designs and manufactures modular connector systems for the premise wiring, computer networking, medical and telecommunications Industries. These connectors are designed for high speed transmission of data complying with the requirements for Category 5e, Category 6, and Category 6a performance for structured cabling systems.

Sentinel Connector Systems is the premier "MADE 
IN USA" manufacturer of RJ-45 Plugs and Jacks. 
As a matter of fact, Bob Brennan, Founder and 
President of Sentinel Connector (former 
Founder/President of Stewart Connector) has 
been involved with RJ45s since their inception. 
Bob was part of the team that built the first 
RJ45 back in the 1970's consulting with 
Hardesty and Gustin who worked at Western 
Electric creating the FCC Part 68 Specification 
(superseded by ANSI/TIA-1096-A). Bob and the 
Sentinel East Team have over 35 foreign and 
domestic patents relating to the RJ45 
Interconnect. Significant Patents include the 
MagJack, a Proprietary Gold Plating Process 
called Spot Plating and a Composite 
Carbon/Graphite Fiber Conductive Load Bar.

Argonne National Labs, BAE Systems, Boeing, Bombardier, Brookhaven National Labs, CACI, DoD, DISA, General Dynamics, L3 Communications, Lockheed Martin, Mantech International, NASA, NAVWAR, Northrop/Grumman, Oak Ridge National Labs, Raytheon, Rockwell Collins, SAIC, Scientific Research, Serco Group, TASC, USMC, US Army, US Navy, White House Media Office, Wyle Services

Annual Sales:
$15,000,000 - $25,000,000

THE SENTINEL CONNECTOR SYSTEMS ADVANTAGE - All of Sentinel's Plugs and Jacks are built in accordance to INDUSTRY STANDARDS & SPECIFICATIONS as set forth by governing bodies such as ACTA, ASTM, FCC, IEC, IEEE, ISO, TIA and UL. Sentinel is also a Member of the Communications Cable and Connectivity Association.....adhering to the Association's STRICT CODE of ETHICS regarding compliance.

Small Business Status:
  • Small Business
Business Categories:
  • Cables
  • Components
  • Connectors
  • Fiber Optics
  • Networking Technologies
  • Patch Panels
  • Shielding
  • Space Communications
  • Wire/Cable

NAICS Industry:
  • 334417 - Electronic Connector Manufacturing

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