Radial taped power resistors ideal for minimal footprint designs

TT Electronics has launched its ULWP2R range of fusible wirewound resistors. By combining the functions of a fuse and a line input resistor in a single, vertical radial formed component the resistors save valuable PCB space. The UL recognised, 2W rated power resistors are aimed at designers of high-density PSU circuits where PCB space is at a premium, fusing must be provided, and where automatic insertion is a requirement. For use in both the industrial and consumer sectors, the resistors can be deployed in power supplies, white goods controllers, circuit breakers, line input circuits, protection circuits and other applications. Factors driving the demand for this type of component are cost reduction re-designs that are increasing both the popularity of dual function components and the automated insertion of parts that cannot be switched to SMD. Further, the increasing electronic content in electrical products is putting pressure on the space available for PSU sections. With UL1412 recognition, the company’s range of fusible wirewound resistors makes it easier for customers to get UL approval and provides third party assurance of a safety critical part. The resistor’s radial, vertical format saves PCB space and also stops surrounding components and the PCB overheating, reducing field failure costs. The inrush and surge withstanding resistors provide failsafe mains fusing at 120/240Vrms and they feature a UL94-V0 flameproof coating. Supplied in tape and reel packaging they are ideal for minimal footprint designs that require flameproof components for automated through-hole assembly, simultaneously reducing assembly costs.