TT Electronics now offers new resistors designed for surge control applications including power supplies, energy metering, UPS and motor drives, providing enhanced surge and pulse energy withstand capability. Its high surge, ul identification, fusible resistor series - WHS-UL series.
Brian Stephenson, director of engineering at TT Electronics, said: "Using TT's new WHS-UL series, designers will find that thanks to its specially designed high-energy coils, a range of surge requirements can be met - greater safety margins or more. Small body size." "At the same time, we support our customers to quickly achieve EMC and safety testing goals using this safety agency approved product."
UL1412 approved fusible resistors (UL file E234469), this series offers fail safe fuses at 120/240Vrms with UL94-V0 flameproof coating. A variety of lead preforms are also available, including tape in vertical radial form and SMD machining in ZI form. These resistors are available in 2W, 3W and 5W sizes, with E24 values from 10 ohms to 100 ohms, and offer up to 30J of surge energy capacity and up to 7kV peak 1.2/50µs performance. They also guarantee safe fusing in fault conditions overloaded from 30W.
