


| Brand | DURAN |
|---|---|
| Manufacturer Part Number | QD255 |
| Type | RESISTOR |
| Weight | 12.0000 |
The Duran QD255 Ultra Millivolt Potentiometer is a high-precision variable resistor designed for applications that require accurate and stable voltage regulation. This potentiometer is available in a 2mm diameter, standard shaft design, making it suitable for various electronic projects and instruments.
The ultra-low TCR (Temperature Coefficient of Resistance) of 25 ppm/ C ensures excellent temperature stability, which is crucial for applications where precise voltage regulation is vital. The potentiometer's resistance range is 2mV to 400mV, making it ideal for millivolt level applications.
This potentiometer features a unique, linear taper design. It allows for smooth and consistent resistance changes, ensuring accurate calibration and reliable performance. The potentiometer is also equipped with a carbon composition resistive element that provides excellent stability and low moisture absorption.
The potentiometer's robust construction includes a nickel-plated brass housing that provides excellent electrical conductivity and corrosion resistance. The shaft is made of brass, and it comes with a knob made of Polystyrene, ensuring comfortable operation and reduced wear. It also features a longer shaft length for easier control and mounting.
The Duran QD255 Ultra Millivolt Potentiometer is designed for a voltage rating of 50VDC and offers an operating temperature range of -30 C to 70 C. With its high-precision design, excellent temperature stability, and robust construction, the potentiometer is an excellent choice for applications that demand precise voltage regulation and reliable performance.
Pros of Duran QD255 Ultra Millivolt Potentiometer:1. High Precision: The Duran QD255 Ultra Millivolt Potentiometer offers high precision with a tolerance of 1% or better, making it suitable for applications requiring accurate voltage adjustments.
2. Wide Voltage Range: The potentiometer's voltage range of 2mV to 400mV caters to a broad set of applications, allowing fine voltage adjustments for various electronic devices.
3. Low Temperature Coefficient: This potentiometer has a low temperature coefficient, ensuring stable voltage readings across a wide temperature range.
4. Rugged Design: The Duran QD255 Ultra Millivolt Potentiometer is designed for rugged applications and can withstand harsh environments.
5. Linear Taper: A linear taper ensures that the resistance changes uniformly with a 10:1 resistance ratio, allowing for smooth and accurate voltage adjustments.
Cons of Duran QD255 Ultra Millivolt Potentiometer:1. Size and Cost: The Duran QD255 Ultra Millivolt Potentiometer is relatively larger and more expensive compared to other potentiometers, which could be a disadvantage for cost-sensitive applications.
2. Manual Adjustment: As it is a manual potentiometer, the voltage adjustment is not automatic, making it less convenient for applications requiring constant voltage adjustments. This may lead to errors, particularly when working with high voltages or fine adjustments.
Conclusion:The Duran QD255 Ultra Millivolt Potentiometer offers high precision, wide voltage range, and rugged design, making it a suitable choice for applications requiring accurate voltage adjustments. However, its larger size, higher cost, and manual adjustment might be disadvantageous for some users. Considering both the pros and cons, the potentiometer is recommended for applications where high precision, ruggedness, and a wide voltage range are essential, even if it comes at a slightly higher cost and larger size.
Condition: used. It was pulled from a working environment where it in use and functional. This used potentiometer has been inspected and appears to be in good condition. Millivolt potentiometer - range 2MV-400MV Duran QD255 ultra.
Reference sheet. Millivolt potentiometer - range 2MV-400MV: 2MV-400MV.
