The 51AAA-B24-B13L is a sealed 1/2" (12.5 mm) square control potentiometer manufactured by Bourns, featuring a linear cermet element with ±10% tolerance and a resistance value of 10 kO. This single-section potentiometer is designed for PC board mounting with 100° center terminal spacing and includes a metal bushing and shaft configuration. The device is RoHS compliant and sealed for board washing, providing protection against environmental contamination. It is commonly used in pro audio applications, instrumentation, and control systems where reliable, sealed potentiometer performance is required.