Manufacturer: Aavid Thermalloy  •  RoHS/pb-free: RoHS   Pb-free  •  Package Cooled: Assorted (BGA, LGA, CPU, ASIC...)  •  Attachment Method: Thermal Tape, Adhesive (Included)  •  Outline: 40.00mm x 40.00mm  •  Height: 0.394" (10mm)  •  Material: Aluminum  •  Power Dissipation @ Temperature Rise: 4W @ 80°C  •  Thermal Resistance @ Forced Air Flow: 6.5°C/W @ 200 LFM  •  Thermal Resistance @ Natural: 20.3°C/W  •  Other PartNo: HS397