The Bourns 3362X-1-500LF is a trimmer resistor, through hole 1/4 inch square, constructed with 50 ohms of resistance and a 10% tolerance, with 0.5 watts of power. It is a rotationally adjustable device used to precisely adjust the value of resistors on a circuit board layout. This trimmer has standard features such as an internal center contact, an insulated slider body, and a single turn of adjustment using a slotted screwdriver. The 3362X-1-500LF is a top-of-the-line trimmer, ideal for use in precision measurements, test and measurement equipment, and medical applications.