Balun 1:49 FT140-43

The power handling of an FT140-43 ferrite toroid varies based on its application, but a single core can handle up to 100-175 watts for broadband transformers and 250 watts for SSB applications. For higher power, stacking multiple cores increases power handling, and the exact rating depends on factors like wire gauge, winding technique, frequency, and SWR. Exceeding the power limit will not necessarily damage the core but will increase losses as the ferrite becomes saturated.