The 3313J-1-503E is a 0.125 Watt, 1/8 Watt J Lead Surface Mount Trimmer Potentiometer Cermet 1.0 Turn Top Adjustment manufactured by Bourns. It has a resistance of 50 kOhms and is designed with an adjustable top adjuster. This trimmer potentiometer is highly reliable, offering stability and accuracy during its voltage and power adjustments. It is perfect for applications that require precise control of a signal’s voltage or power. It can also often be used to calibrate or tune circuits.