First line: with TO-220 packages 551002b00000 VIS#002015Abstract: .. For use with TO-220 TO-220 packages. 551002b00000 VIS#002015. Mechanical Outline Drawing. Thermal resistance value is based on a 75 °C rise in natural convection. Thermal Resistance. 12.4. Page 1 of 2 Standard .. Tags: 551002B00000551002b00000