TT Electronics - High-surge resistors qualified by a global manufacturer of smart energy meters (WHS series)

TT Electronics' WHS series wire wound high surge resistors. This resistor has passed the rigorous surge tests of global manufacturers of smart meters and passed a rigorous surge test designed to simulate the effects of lightning strikes on power lines. The company said that despite its exceptionally high reliability located at the electrical exposed entrance of the line power supply, it still ensures years of trouble-free operation. WHS series resistors provide industry-leading surge energy ratings and meet the needs of power supply designers. Power supply designers need line input resistors to withstand the surge conditions associated with turn-on and external surge events, while avoiding use Multi-component solution. They are rated at 2W, 3W, 5W, 7W and 10W, with values ​​from 1R0 to 330R and energy levels from 1 to 230J. The company said that UL94-V0 fire-resistant coating can provide isolation of up to 1kV. The surface mount form of the ZI form can provide a rated power of 5W and below, thereby limiting high-voltage wiring to one side of the PCB.