Fischer Elektronik ICK PGA CPU Heat Sinks – Fischer Elektronik ICK PGA 21X21, The Fischer Elektronik 7° CPU Heatsink has been specially developed for IC design and PGA, and can be mounted with double sided, self-adhesive heat conductive film. Fischer Elektronik ICK PGA 21X21 7°C/W PGA CPU Heat Sink 53.3×53.3×16.5mm