The 3299Y-1-101LF is a 3/8" square multiturn cermet trimming potentiometer manufactured by Bourns, designed for precision adjustment and tuning applications in industrial environments. This sealed unit features a 100 ohm resistance value with ±10% tolerance, infinite resolution, and 25 turns of effective travel for fine adjustment control. The device operates across a temperature range of -55°C to +125°C with a temperature coefficient of ±100 ppm/°C, and is rated for 0.5 watts at 70°C and 0 watts at 125°C. It incorporates 100% tin-plated (RoHS compliant) solderable pins, U.L. 94V-0 flammability rating, and meets MIL-STD-202 humidity and vibration standards. The trimmer is ideal for circuit calibration, signal conditioning, and equipment tuning where reliable, repeatable adjustments are required in harsh or sealed environments.