BOURNS 3299 Series Cermet Trimmer Potentiometer 5kΩ, 25-Turn

The BOURNS 3299 Series is a high-quality, multi-turn cermet trimming potentiometer designed for precise circuit adjustments in a wide range of electronic equipment. These through-hole components are engineered for reliability and long-term performance in demanding applications.

The potentiometer offers 25 turns, allowing for extremely fine and accurate adjustments to resistance values. With a rotational life of 200 cycles, it is built for repeated calibration and tuning. The device is sealed to an IP65 rating, providing protection against dust ingress and low-pressure water jets, making it suitable for use in environments where contamination is a concern.

Key Features & Applications

This trimmer performs a variety of critical circuit adjustments and is typically used for measuring linear distance, angle, or rotation in production and industrial equipment. Its compact 3/8-inch square form factor and availability in side or top adjustment styles (with lead screw) offer flexibility for different PCB layouts and assembly processes. The inclusion of standoffs on several of the five popular terminal styles facilitates thorough PC board washing post-assembly.

Technical Specifications

• Resistance Range: This specific model has a track resistance of 5kΩ. The overall series spans from 10 ohm to 2MΩ.
• Tolerance: Resistance tolerance is ±10%.
• Power Rating: Rated for 0.5W (500mW).
• Temperature Performance: Features a temperature coefficient of ±100ppm/°C and operates reliably across a broad temperature range from -55°C to +125°C.

Constructed with a durable cermet element, this Bourns Trimpot provides stable and consistent performance, making it an excellent choice for designers and engineers requiring precise, adjustable resistance in their electronic designs.