The ULR and LRMA Series resistors feature a metal strip construction capable of withstanding high temperatures and large surge currents. According to the company, the resistors are constructed with a low temperature coefficient resistive alloy that provides a large mass, or cross section, for carrying current when compared to film-based devices. This large mass provides a robust structure, enabling the resistors to withstand large surge currents. RoHS compliant and halogen free, the ULR and LRMA Series feature TCRs of 50, 75, and 100 ppm/°C, low inductance values, resistance values from 0.5 mΩ to 100 mΩ, and power ratings from 1W to 3W. IRC INC., Corpus Christi, TX. (361) 992-7900.