TC42X-2-103E is a 2 mm SMD Trimpot® trimming potentiometer manufactured by Bourns, designed for precision resistance adjustment in compact surface-mount applications. It features a single-turn cermet/open-frame construction with a cross-slot rotor and meets EIA/EIAJ standard trimmer footprint specifications. The device offers a resistance range of 100 ohms to 1 megohm with ±25% standard tolerance, an adjustment angle of 240° ±20°, and essentially infinite resolution for fine-tuning applications. Operating over a temperature range of -40°C to +100°C with a power rating of 0.1 watt at 70°C, it provides reliable performance in demanding environments. This trimmer is ideal for circuit calibration, signal conditioning, and tuning applications in consumer electronics, industrial equipment, and telecommunications systems where compact size and precision adjustment are required.