4525 – AAVID THERMALLOY

The AAVID 4525 is a stamped spring clip designed for securing TO-220 packaged semiconductor devices to heat sinks. Constructed from spring steel, the clip provides a consistent normal force, ensuring reliable thermal contact between the device and the heat sink. The 4525 is specifically engineered for use with AAVID’s KM and KL series heat sinks, featuring a geometry optimized for the mounting features of these heat sinks. This clip eliminates the need for screws or other fasteners, simplifying assembly and reducing component count. The spring force is calibrated to maintain adequate pressure for efficient heat transfer without damaging the TO-220 package. The clip’s design allows for quick installation and removal, facilitating device replacement or maintenance. Material composition and finish are selected to resist corrosion and maintain consistent performance over the operational temperature range of typical TO-220 applications.