BOURNS 3266 Series Cermet Multi-Turn Trimmer Potentiometer 500KΩ, 12 Turn

The BOURNS 3266 Series is a premium range of cermet, through-hole trimming potentiometers. Designed for multi-turn operation, these trimmers enable precise and stable circuit adjustments across a vast array of electronic equipment. They are engineered for reliability in demanding applications, offering a robust solution for fine-tuning voltage division, setting reference points, and calibrating sensitive circuits.

This multi-turn model features a precise 12-turn adjustment mechanism, allowing for extremely fine resolution and accurate setting of the 500kΩ resistance value. The cermet element provides excellent stability and a long rotational life of 200 cycles. Its IP65-rated sealing offers effective protection against dust and water jets, making it suitable for use in environments where contamination is a concern.

The 1/4-inch square form factor with through-hole mounting ensures compatibility with standard PCB layouts. Standoffs are incorporated into the design to allow for thorough cleaning of the circuit board after soldering, preventing flux residue from causing issues. The potentiometer can be adjusted from the top using a lead screw, facilitating easy access during calibration.

Key Specifications & Features

• Multi-Turn Design: 12-turn adjustment for high precision and fine control.
• Robust Construction: Cermet resistive element ensures stability and durability.
• Environmental Protection: IP65-rated sealing defends against dust and water.
• Wide Operating Range: Functions reliably from -55°C to +125°C.
• PCB Friendly: Through-hole mounting with standoffs for easy board cleaning.
• Electrical Ratings: 0.25W power rating and a resistance tolerance of ±10%.

Ideal for prototyping, industrial controls, test equipment, and any electronic assembly requiring a reliable and adjustable resistive component.