23ESA223MMF50NF Rotary Potentiometer, Spindle Operated, 22 kohm, 1 Turns, Linear. The 23ESA series from TE connectivity are single turn spindle operated potentiometers. These potentiometers are standard linear types which can be tailored to suit more specific requirements. The potentiometers are available with printed carbon resistance, various bush lengths in metal or plastic and insulated shafts up to 50mm in length.