Microlab TK-27 series of 100W 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°C) at full power at 55°C ambient, air flow over the fins is required.