RCJ-021 is a through-hole RCA jack designed for audio and video signal connections. It features 2 conductors and 2 contacts with a black insulator, and offers a contact resistance of 30 mO maximum and insulation resistance of 100 MO minimum at 500 Vdc. The jack is constructed with a brass shell with nickel plating, iron mounting bracket with tin plating, and brass terminals with tin plating. With a voltage withstand rating of 500 Vac for 1 minute and a life expectancy of 5,000 cycles, this RoHS-compliant connector is suitable for consumer electronics, audio equipment, and multimedia devices requiring reliable RCA connectivity.