THF 409 TO 220

The THF 409 TO 220 is a stainless steel retaining spring designed for securing power transistors in TO-220, TO-3P, TO-247, and TO-248 packages to heatsinks. It provides reliable mechanical fastening without the need for screws, making it ideal for quick assembly and maintenance in thermal management applications. This clip-style mount is compatible with Fischer’s SK 409 series extruded heatsinks and supports plate thicknesses ranging from 1.5 mm to 3 mm. With dimensions of approximately 18 mm in length, 13.3mm in height, and 3 mm in depth, it ensures firm contact between the transistor and heatsink surface, enhancing thermal conductivity.

• Type: Retaining spring for TO-220, TO-3P, TO-247, and TO-248 packages
• Material: Stainless steel
• Mounting Method: Clip-on (no screws required)
• Compatible Heatsinks: Designed for use with SK 409 series
• Supported Plate Thickness: 1.5 mm to 3 mm
• Dimensions (LxHxH): 18mm x 13.3mm x 3mm (Approx.)