Tronic Fan Square Capacitor 3.5 MFC350-SQ

Our review

This is a square-bodied fan capacitor from Tronic, listed as the 3.5 MFC350-SQ. Its job is straightforward: it helps a fan motor start and run smoothly, which is why a tired capacitor often shows up as a fan that hums but won't spin, spins slowly, or needs a push to get going. It suits anyone repairing or servicing a fan whose original capacitor has failed, whether that is a household unit or a workshop fan. Before buying, check the capacitance value and the shape and terminal layout of your old capacitor, since a square can will not fit a mount designed for a round one, and the microfarad rating must match what your motor expects. Compare against other fan capacitors by confirming the rating, body shape, and terminal spacing rather than by brand alone. If your fan's label or old part does not clearly state these details, identify the motor first. The item is available on Sokonia.