BOURNS 3386 Series 20kΩ Cermet Trimmer Potentiometer, Top Adjust, Single Turn

The BOURNS 3386 Series is a versatile range of cermet, through-hole trimming potentiometers designed for reliable circuit adjustments across a broad spectrum of electronic equipment. As a single-turn device, it allows for precise calibration and fine-tuning in applications where space and stability are key considerations.

Constructed with a durable cermet element, this trimmer potentiometer offers excellent long-term performance and stability. The top-adjustment type provides convenient access for adjustment during or after assembly, making it suitable for a variety of PCB layouts. Its compact 3/8-inch square footprint ensures it can be integrated into densely packed circuits without issue.

Key Features & Specifications

• Element Material: High-reliability cermet for stable resistance characteristics.
• Adjustment Type: Top adjust for easy access.
• Track Resistance: 20kΩ with a standard tolerance of ±10%.
• Mounting Style: Through-hole for secure PCB mounting and strong solder joints.
• Power Rating: A robust 0.5W (500mW) rating for handling typical circuit adjustment loads.
• Temperature Performance: Operates reliably across an extensive temperature range from -55°C to +125°C, with a low temperature coefficient (TCR) of ±100ppm/°C.
• Mechanical Life: Designed for a rotational life of 200 adjustment cycles, ensuring durability through repeated tuning.
• Dimensions: Compact size measuring approximately 33mm (W) x 15mm (D) x 43mm (H).
• Weight: Lightweight at just 0.76 grams, minimising board stress.

This component is an essential part of any engineer's toolkit for prototyping, testing, and production, where precise resistance values are critical to circuit performance.