The 91A2A-B24-D15/D15L is a 5/8" square single-turn panel control potentiometer manufactured by Bourns, designed for applications requiring virtually infinite electrical circuit isolation with metal or plastic shaft options. This model supports a wide range of standard resistance values from 100 ohms to 1 megohm with both linear (A, B, E, H) and audio (C, D, F, G, S, T) taper configurations, offering total resistance tolerance of 5% to 10% for cermet elements and independent linearity of ±5%. The potentiometer features an absolute minimum resistance of 2 ohms maximum and is RoHS compliant, making it suitable for consumer electronics, audio equipment, instrumentation, and industrial control applications where reliable variable resistance adjustment is required.