TT ELECTRONICS / WELWYN W21 Series Wirewound Resistor 5% - 7W

The TT ELECTRONICS / WELWYN W21 Series resistor is a high-quality wirewound component designed for robust performance in demanding electronic applications. Engineered for stability and durability, this resistor is built to handle significant power loads while maintaining precise electrical characteristics over a wide temperature range. Its axial leaded package ensures easy installation and compatibility with standard through-hole PCB layouts, making it a versatile choice for both prototyping and production.

Constructed using advanced wirewound technology, the component offers excellent pulse load handling and long-term reliability. The ±5% tolerance provides a good balance between precision and cost-effectiveness for general-purpose circuits, power supplies, and current-limiting applications. The resistor's construction is designed to dissipate heat effectively, contributing to its consistent operation and extended service life.

With a maximum operating temperature of 350°C, this resistor is suitable for environments where components are subjected to thermal stress. It is commonly utilised in industrial control systems, automotive electronics, power conversion units, and test equipment. The combination of a 3W power rating and a 100V voltage rating makes it a dependable choice for managing energy in various circuit designs, ensuring safe and stable performance under load.

Key Features

• Wirewound Technology: Provides high stability and excellent performance under high-power conditions.
• Wide Operating Range: Functions reliably from -55°C to 350°C, suitable for harsh environments.
• Axial Leaded Design: Facilitates straightforward manual or automated PCB assembly.
• Robust Construction: Built to withstand thermal cycling and mechanical stress for long-term durability.

Variant Details

• Size: 7W