5520425-2 is a single-port modular jack designed for top-entry, thru-hole mounting on printed circuit boards. It features 6 positions with 4 active contacts and delivers Category 3 performance without shielding. The jack is constructed from UL 94V-0 flame-retardant polyester in black and includes selectively gold-plated contacts for reliable, cost-effective connectivity. It meets or exceeds FCC Part 68 regulations, REA PE-76, and UL 1863 standards for communication circuit accessories, with a 1000 volt dielectric rating between contacts. This unshielded configuration is ideal for standard telecommunications and data communication applications where cost efficiency and straightforward integration are priorities.