Ok i just purchased a 45 watt soldering iron from radio shack and the dubass didnt know what wattage i needed for my job. I was wondering if you know if 45 watts is too much for electrical boards. I have soldered bigger thing before but i am not really familiar with the wattage scale. So if i dont hold it over the board for a long period of time, will i be alright or will it break my motherboard?