The 3299Y-1-253LF is a 3/8" square multiturn cermet trimming potentiometer (Trimpot) designed for industrial sealed applications. This model features a resistance value of 25,000 ohms with ±10% standard tolerance, infinite resolution, and 25 turns of effective travel for precise voltage and resistance adjustments (±0.01% voltage adjustability, ±0.05% resistance adjustability). The device operates over a temperature range of -55°C to +125°C with a power rating of 0.5 watts at 70°C, dielectric strength of 900 VDC at sea level, and meets UL 94V-0 flammability standards. It features 100% tin-plated RoHS-compliant terminations, solderable pins, and is commonly used in precision circuit tuning, signal conditioning, and industrial control applications where reliable adjustment and environmental sealing are required.