TT Electronics 3.9 Ohm 3W Wirewound Resistor

The TT Electronics 3.9 Ohm 3W Wirewound Resistor from the W21 Series is a robust axial-leaded component engineered for demanding applications. Constructed using proven wirewound technology, it offers stable performance and excellent power handling in a compact package, making it a reliable choice for a wide range of electronic circuits.

This resistor is designed to dissipate up to 3 watts of power, providing a dependable solution where energy handling and durability are key. Its ±5% tolerance offers a solid balance of precision and cost-effectiveness for general-purpose designs. The component operates effectively across an impressively wide temperature spectrum, from -55°C to +350°C, ensuring functionality in challenging environments.

Featuring a voltage rating of 100V, it is suitable for various circuit protection and current limiting roles. The wirewound construction contributes to its high power rating and stability, with a temperature coefficient of ±75ppm/°C for predictable performance under thermal stress. Its axial leads facilitate straightforward through-hole mounting on printed circuit boards (PCBs).

With compact dimensions of 15mm (D) x 33mm (W) x 43mm (H), it efficiently utilises board space. The component's robust design ensures long-term reliability in power supplies, motor controls, industrial equipment, and other electronic assemblies where consistent resistance and heat dissipation are critical.