MICROLAB's TK-27 series of 100 W cable loads are intended for wireless applications, when extremely low PIM, passive intermodulation, is required. A typical application is in terminating the unused port of a hybrid coupler used to combine different wireless signals. This is also offered as a discrete product in the CT series of low PIM hybrid combiners. For IEC 60950 compliance (surface temperature no greater than 90 deg. C) at full power at 55 deg. C ambient, air flow over the fins is required