Manufacturer: Aavid Thermalloy  •  RoHS/pb-free: RoHS   Pb-free  •  Package Cooled: Assorted (BGA, LGA, CPU, ASIC...)  •  Attachment Method: Push Pin  •  Outline: 45.20mm x 41.40mm  •  Height: 0.46" (11.68mm)  •  Material: Aluminum  •  Power Dissipation @ Temperature Rise: 4W @ 60°C  •  Thermal Resistance @ Forced Air Flow: 5.0°C/W @ 200 LFM  •  Thermal Resistance @ Natural: 14.2°C/W  •  Other PartNo: 10-L4LB-11, HS307