TNC Dust Cap for Jack Protection
The Amphenol RF 202101-12 is a TNC cap (cover) designed to protect unmated TNC jacks from dust, moisture, and physical damage. It's a straightforward accessory — screw it onto the jack when the cable is disconnected, and it keeps the interface clean and the center contact from getting bent. The brass body with nickel finish gives it the same corrosion resistance as the jacks it mates with, so you don't introduce a galvanic mismatch on the line. This cap carries an IP67 rating, meaning it's dust-tight and can handle temporary immersion in water when installed on a mating jack. That makes it a solid choice for outdoor antenna feeds, industrial equipment where washdown happens, or any install where the connector sees weather between cable swaps.
The 202101-13 is the closest sibling — same brass body, nickel finish, and IP67 rating, but packaged in a bag rather than bulk. If your assembly line feeds from bagged parts, that's the one to look at. The 202101-10 drops the IP67 rating entirely, so if the environment demands sealing, stick with the -12 or -13.