The Radio Shack TO-220 Heat sink #276-1363 is made of anodized aluminum and manufactured in Taiwan. It is designed in a TO-220 package/case to provide efficient thermal management for electronic components. The heat sink is suitable for use in the electrical equipment and semiconductor industry, enhancing the performance and longevity of electronic devices. This new heat sink from RadioShack is a reliable solution for dissipating heat and maintaining optimal operating temperatures.