LTO050F15000JTE3 1.5kΩ 50W Thick Film Resistor ±5% ±150ppm/°C. LTO50 series 50W thick film power resistors with a compact TO-220 package and a 50W at 25°C case temperature heatsink mounted. These LTO50 series 50W power resistors have a direct ceramic mounting on heatsink, a broad resistance range of R010 to 550K, an isolated case and are non-inductive.