The 515-1078F is a 3-element lightpipe assembly manufactured by Dialight, designed to be pressed into a PC board for directing and distributing light from surface-mount LEDs. The device features a clear, transmissive polycarbonate construction (UL 94-V0 flammability rated) with a diffused output surface and a 60° viewing angle, enabling efficient light transmission and distribution. Key dimensional specifications include a body length of 2.100 inches (53.34 mm) and a nominal diameter of 0.113 inches (2.87 mm), with a recommended solder pad layout for secure mounting. The lightpipe operates reliably across a wide temperature range of -30°C to +100°C, making it suitable for both single-color and bi-color LED applications in indicator panels, control interfaces, and display systems where compact form factor and light guidance are essential.