Amphenol Corporation
Company typePublic
Founded1932; 92 years ago (1932)[1]
FounderArthur J. Schmitt
Key people
R. Adam Norwitt
(President and CEO)
ProductsCoaxial cables, Connectors
RevenueIncrease US$8.598 billion (Fiscal Year Ended 31 December 2020)[2]
Increase US$1.638 billion (Fiscal Year Ended 31 December 2020)[2]
Increase US$1.203 billion (Fiscal Year Ended 31 December 2020)[2]
Total assetsIncrease US$12.327 billion (Fiscal Year Ended 31 December 2020)[2]
Total equityIncrease US$5.451 billion (Fiscal Year Ended 31 December 2020)[2]
Number of employees
c. 95,000 (Dec. 2023)

Amphenol Corporation is a major producer of electronic and fiber optic connectors, cable and interconnect systems such as coaxial cables.[3] Amphenol is a portmanteau from the corporation's original name, American Phenolic Corp.[4]


16-pin male MIL-DTL-5015 connector manufactured by Amphenol
36-pin micro ribbon connector (micro ribbon was an Amphenol invention[5] though this sample may not have been manufactured by Amphenol)
Wordmark during its ownership under Bunker Ramo
Wordmark during its ownership under Bunker Ramo

Amphenol was founded in Chicago in 1932 by entrepreneur Arthur J. Schmitt, whose first product was a tube socket for radio tubes (valveholder bases).[6] Amphenol expanded significantly during World War II, when the company became the primary manufacturer of connectors used in military hardware, including airplanes and radios. From 1967 to 1982 it was part of Bunker Ramo Corporation.

The company sells its products into diverse electronics markets, including military-aerospace, industrial, automotive, information technology, mobile phones, wireless infrastructure, broadband, medical, and pro audio. Operations are located in more than 60 locations around the world.

Amphenol's world headquarters is located in Wallingford, Connecticut.[7] The largest division of Amphenol is Amphenol Aerospace (formerly Bendix Corporation) in Sidney, New York. This is the birthplace of the MIL-DTL-38999 cylindrical connector. Amphenol engineers also invented the commonly used BNC connector ("Bayonet Neill-Concelman").[8]

Amphenol Fiber Systems International is a fiber optic company started in 1993 that specializes in the fabrication and manufacturing of fiber optic connectivity products and systems. AFSI provides solutions[buzzword] for communication systems based on fiber optic interconnect technology. AFSI employs over 100 people at its 50,000 square foot facility in the heart of the telecom corridor in Allen, just north of Dallas, Texas.[9]

Amphenol Cables on Demand, another division of Amphenol launched in December 2006, specializes in distributing standard cable assemblies via their e-commerce storefront. They sell more than 2500 audio, video, computer, and networking cables. Offices are located in New York, California, Florida, Toronto, and China.[citation needed]


In 1986, Socapex, a French manufacturer of connectors and interconnect systems based in Thyez, was acquired by Amphenol. The company manufactures D38999 connectors and is well established in the defense and aerospace markets.

In May 2005, Amphenol acquired SV Microwave,[10] a manufacturer of RF connectors, components and cable assemblies.

On October 10, 2005, Teradyne and Amphenol announced that Amphenol would acquire Teradyne Connection Systems, for about USD $390 million in cash.[11] TCS, based in Nashua, New Hampshire, manufactures high-density electronic connectors, complete backplanes, and systems packaging, a product line that complements Amphenol's existing lines of business.

In February 2008, Amphenol acquired SEFEE, a French electronic manufacturer, the next year in 2009 it acquired Jaybeam Wireless.[12] Jaybeam Wireless became Amphenol Jaybeam and is now Amphenol Antenna Solutions.

On November 15, 2013, Amphenol announced it had entered an agreement to acquire Advanced Sensors Business of GE for approx. $318 million.[13][14]

In December 2013, Amphenol acquired Tecvox OEM Solutions LLC,[15] a business started by Raj Khanijow based in Huntsville AL. Tecvox is a leader in automotive OEM USB connectivity products. Tecvox was the first automotive company to release the OEM USB based media hub and charger.

On January 8, 2016, Amphenol finalized its deal to acquire FCI Asia Pte Ltd[16] an interconnect company specializing in the telecom, datacom and wireless communications markets.

In July 2016, Amphenol acquired AUXELFTG (AUXEL), a French manufacturer of power busbars and power interconnect solutions.[buzzword][17]

In January 2017, Amphenol acquired Phitek Ltd, a New Zealand-based manufacturer and the world's leading supplier of electronic noise-cancellation, audio enhancement and other electronic touch point devices in the aircraft cabin.[18]

In June 2017, Amphenol acquired Wilcoxon Research (US), Piezo Technologies (US) and Piher Sensors and Controls (Spain), three Industrial Sensing businesses from the British engineering group Meggitt PLC.[19]

In January 2020, Amphenol acquired Exa Thermometrics India Pvt Ltd, an NTC thermistor based sensing solutions company based in Bangalore, India. [20]

In December 2020, Amphenol announced it had reached an agreement to acquire MTS Systems Corporation in an acquisition completed on April 7, 2021.[21][22]

In December 2021, Amphenol Corporation announced that it had acquired Halo Technology Limited for approximately $715 million.


  1. ^ "Amphenol Corp-CL A (APH:US)". Archived from the original on 2010-12-20. Retrieved 2011-01-19.
  2. ^ a b c d e "Amphenol Corporation 2020 Annual Report" (PDF). Amphenol. 31 December 2020. Retrieved 28 August 2021.
  3. ^ Pace, Stan (2018-05-20). "Amphenol (NYSE:APH) versus Methode Electronics (MEI) a closed down amphenol plant in franklin Indiana is leaking cancer causing chemicals causing at least 30 cases of rare childhood cancers in residents due to the site not being properly closed down in the 90's. Critical Comparison". StockNewsTimes. Retrieved 2018-05-23.
  4. ^ "Amphenol". Amphenol Global Interconnect Systems. Retrieved 2019-01-25.
  5. ^ US 3101229A, issued 2021-11-5 
  6. ^ "SEFEE is global leader in aeronautical harness and electronic systems". Retrieved 2019-01-25.
  7. ^ "Amphenol". Fortune. Archived from the original on 2019-06-16. Retrieved 2018-12-22.
  8. ^ 165 F.Supp. 226 (S.D. Ind. 1958) ("The accused devices UG 88/U and UG 89/U are based upon a prototype developed by the Bell Telephone Laboratories and are part of a group generally known as the type BNC, which stand for Baby Neil [sic] Constant because they were originally designed as a small connector by Paul Neil [sic] of the Bell Telephone Laboratories and because they approached more closely a constant impedance device when used with 50 ohm cable at higher frequencies than the prior type BN connector.").
  9. ^ "Fiber Optic Fabrication & Manufacturing | Fiber Systems Company". Amphenol Fiber Systems International (AFSI). Retrieved 2017-01-13.
  10. ^ "About SV Microwave". Retrieved 27 March 2016.
  11. ^ "Amphenol, Form 8-K, Current Report, Filing Date Dec 6, 2005" (PDF). Retrieved Jan 8, 2013.
  12. ^ "Jaybeam Wireless". Archived from the original on 16 March 2016. Retrieved 27 March 2016.
  13. ^ "Amphenol Corporation to Acquire the Advanced Sensors Business of GE". MarketWatch. November 15, 2013. Archived from the original on March 4, 2016. Retrieved November 16, 2013.
  14. ^ "Amphenol Corporation stock forecasting". Archived from the original on 2020-09-29. Retrieved 2017-02-01.
  15. ^ "Fourth Quarter 2013 Record Results Reported by Amphenol Corporation". Archived from the original on 2019-01-26. Retrieved 2019-01-25.
  16. ^ "FCI Asia Pte Ltd Acquisition". 8 January 2016. Retrieved 26 March 2016.
  17. ^ "AUXEL FTG (Auxel) Acquisition". Retrieved 1 Aug 2016.
  18. ^ "Phitek sold to NYSE-listed Amphenol in $60M deal -".
  19. ^ "Amphenol 2017 Annual Report" (PDF). February 2018.
  20. ^ "MergerLinks". Retrieved 2022-02-23.
  21. ^ Jones, Carter (9 December 2020). "MTS Systems acquired by cable manufacturer for $1.7 billion, stock soars". Minneapolis / St. Paul Business Journal. Retrieved 23 March 2021.
  22. ^ "Amphenol Completes Acquisition of MTS Systems". Businesswire. 7 April 2021. Retrieved 8 April 2021.