The 507-5337-1533-640F is a standard brightness neon datalamp cartridge designed for 105-125V AC or DC operation with a built-in 56K current-limiting resistor. It features an A1B neon lamp with an expected operational life of 3,000 hours under bright light conditions, providing reliable visual indication in industrial and electronic equipment. The cartridge is housed in an aluminum body with a heat-resistant plastic lens and nickel silver pins mounted in a nylon-insulated header for polarization. The long cylindrical lens shape (Fig. 10) and light yellow lens color (code 6) provide clear visibility in various lighting conditions. This cartridge is compatible with Datalamp Holder C and complete indicator lights A and D, making it suitable for panel-mount indicator applications where consistent, rugged performance and minimal deterioration are required.