The HSE-B20380-040H-01 is a heat sink specifically designed for thermal management of TO-220 packaged components. Constructed from AL 6063-T5 aluminum with a black anodized finish, this model has a length of 38 mm and features steel placement pins for secure attachment to a PCB. Under natural convection with a 75°C temperature rise, it has a thermal resistance of 10.27 °C/W and can dissipate 7.30 W. Its cooling performance improves with airflow, achieving a thermal resistance of 5.77 °C/W at 200 LFM and 3.68 °C/W at 400 LFM. This makes it an effective solution for managing heat in power supplies, audio amplifiers, and voltage regulators.