3386W-1-203LF is a 3/8" square Trimpot trimming potentiometer featuring a cermet element with 20 kO resistance value and side adjust configuration. This single-turn potentiometer offers a power rating of 0.5 watt at 85°C, an adjustment angle of 280° nominal, and operates over a temperature range of -55°C to +125°C. Key electrical characteristics include ±10% resistance tolerance, infinite resolution, and insulation resistance of 1,000 megohms minimum at 500 VDC. The sealed industrial design provides excellent environmental protection with vibration resistance up to 30 G and shock resistance up to 100 G. With 100% tin-plated RoHS compliant terminations, this trimmer is ideal for precision adjustment applications in industrial electronics, instrumentation, and control systems.