HTS Range, Axial Vishay Sfernice HTS Series Thick Film High Ohmic and High Voltage power Resistors. The HTS Series has an epoxy coated high purity ceramic core with solder coated copper terminations. Having excellent stability (1%) and a low temperature coefficient of 100ppm/°C the HTS Series is suitable for use as current sensing of power conversion, industrial and medical power supplies and motor control circuits.