amphenol is one of the largest manufacturers on the planet you’ve never heard of. founded in 1932 and headquartered out of connecticut, amphenol is a fortune 500 company with more than 80,000 employees throughout the world. our products are a key ingredient in the electronic devices that you use every day. from the cell phone in your pocket and the car you drive, to the network equipment behind your favorite app and website, amphenol products are everywhere.