USR-SF series

  • Alpha Electronics
  • Ultra-stable primary standard resistor
  • Resistance range from 1ฮฉ to 10Kฮฉ
  • Accuracy of ยฑ2 ppm
  • TCR of ยฑ0.05 ppm/ยฐC
  • Power rating of 1W
  • long-term stability of resistance 0.5 ppm/year