The Johnson 142-4407-001 is a SMA reverse polarity plug connector designed for high-frequency applications. It features a captivated contact for secure retention and is compatible with various cable types including RG-58, LMR-100, and RG-142. Constructed with brass and beryllium copper, and gold-plated for excellent conductivity, this connector ensures minimal signal loss and reliable performance in demanding environments. It is commonly used in telecommunications, test and measurement equipment, and aerospace applications.