Fischer elektronik aluminium heat sink mount horizontal amp vertical bolt on fischer elektronik fk 214 sa cb buy elektronik aluminium heat sink mount horizontal bolt on 15cw from fischer designed to keep devices in to 220 or sot 32 semiconductors packages cool the heatsinks are manufactured from aluminium for high thermal conductivity and due to aluminium being a soft metal for optimum device contact having a black anodised finish increases radiative heat loss to maximise the ef