RJE591885401 is a single-port modular jack featuring a tab-up orientation with slim profile construction and non-shielded design. The connector is manufactured with a high-temperature thermoplastic insulator compliant with UL 94V-0 in black, and phosphor bronze hard temper contacts with multiple gold plating options (6µ", 15µ", 30µ", 50µ") over 50µ" minimum nickel on the contact mating area, with 100µ" minimum matte tin plating on soldering tails. The device incorporates 8 contact holes with 0.90±0.05 mm diameter and 2 locate holes with 2.30±0.05 mm diameter, designed for through-hole PCB mounting with recommended hole spacing and positioning. This connector is ideal for data communications and telecommunications applications requiring standard Ethernet connectivity in compact form factors where shielding is not required.