I recently opened up an old camera. I tore it down to its flash unit.
I saw this green component and I'm not sure what exactly it is.
It also has a small rod which fits inside the hole. When I opened up the camera in the first place, the rod was already inserted completely inside the hole. (Sorry no image of the rod because I lost it.) My guess is that it is some kind of inductor. However I'm not sure, because of the rod inclusion in it and also the entire component is dangling onto the copper wires, as shown in the image. I tried to Google some answers, but didn't find anything.