3312 Trimpot® Trimming Potentiometers Bourns 3312 Trimpot® Trimming Potentiometers are 2mm sealed single-turn trimming potentiometers. These potentiometers feature a 10Ω to 2MΩ standard resistance range, ±20% standard resistance tolerance, 25 rotational cycles, 100ppm/°C temperature coefficient, and miniature design for flexibility. The 3312 trimming potentiometers are RoHS compliant and compatible with the surface mount manufacturing process. These potentiometers are used in hearing aids, laser diodes, barcode scanners, encoders, CCTVs, and ultrasonic detectors.