BOURNS 3299 Series Cermet Trimming Potentiometer, 25 Turn, 200KΩ

The BOURNS 3299 Series are high-precision, multi-turn cermet trimming potentiometers designed for through-hole mounting. These robust components are engineered for fine circuit adjustment in a wide range of electronic equipment, offering reliable performance and excellent durability. Their multi-turn design allows for extremely precise resistance settings, making them ideal for applications where accuracy is critical, such as calibrating measuring instruments for linear distance, angle, or rotation in production equipment.

Featuring a compact 3/8-inch square form factor, the trimmer offers flexible adjustment via a top-mounted lead screw. It is sealed to an IP65 rating, providing protection against dust and low-pressure water jets, which enhances its reliability in challenging environments. With a rotational life of 200 cycles and 25 turns of adjustment, it balances precision with long-term operational stability.

Key Specifications & Features

• Multi-Turn Design: Provides 25 turns for highly precise and fine-resolution adjustment of resistance values.
• Robust Construction: Built with a cermet element material, offering stable performance and good temperature characteristics.
• Environmental Protection: IP65-rated sealing ensures protection from dust and water, suitable for a variety of operating conditions.
• Wide Resistance Range: Available with a track resistance of 200kΩ, part of a broader series range from 10Ω to 2MΩ.
• Stable Performance: Features a ±10% resistance tolerance and a low temperature coefficient of ±100ppm/°C for consistent operation across temperature variations.
• Through-Hole Mounting: Designed for secure soldering onto printed circuit boards (PCBs).
• Board Wash Compatible: Standoffs on the five popular terminal styles allow for thorough post-assembly PC board cleaning.

With a power rating of 0.5W (500mW) and an operating