Bourns 3266 Series Multi-Turn Cermet Trimming Potentiometer, 10kΩ, 12 Turn

The Bourns 3266 Series is a versatile family of cermet, multi-turn trimming potentiometers designed for through-hole mounting, offering precise and reliable circuit adjustments across a wide array of electronic devices and equipment. These components are engineered to meet demanding industrial and commercial applications, ensuring stable performance over numerous adjustment cycles.

Featuring a robust 1/4-inch square design, the potentiometer can be adjusted from the side or top via its integrated lead screw mechanism, providing versatile installation options to suit different board layouts and accessibility requirements. Its construction is sealed to an IP65 rating, offering effective protection against dust ingress and low-pressure water jets, which is ideal for environments where board cleaning or exposure to contaminants is a concern.

Precision and Durability

With a 12-turn adjustment range, this trimmer allows for extremely fine and precise calibration of resistance values. It boasts a rotational life of 200 cycles, ensuring long-term reliability for applications requiring periodic adjustments. The use of a cermet (ceramic-metal) resistive element provides excellent stability and a low temperature coefficient, minimising resistance drift with changes in environmental conditions.

Technical Specifications

This specific model offers a track resistance of 10kΩ with a tolerance of ±10%. It operates effectively across a broad temperature range from -55°C to +150°C, with a power rating of 0.25W (250mW). The inclusion of standoffs beneath the component body facilitates thorough cleaning of the printed circuit board after soldering, a critical feature in many manufacturing processes.

Typical Applications

These multi-turn trimmers are perfectly suited for calibration and tuning tasks in production equipment, instrumentation, and control systems. Common uses include