9331G Series

Series of Primary High Value 2 Terminal Resistors from100M to 100T with Optional Carrying Case

  • Based on NIST design
  • High stability
  • 100MΩ to 100TΩ
  • Split guard circuit
  • Internal temperature sensor
  • Custom values available
Features & Benefits

The 9331G series of high accuracy resistance standards are available in standard values from 10M to 100T Ohms and custom values available at any resistance therein.

High stability and supplied alpha and beta temperature coefficients of the 9331G make them ideal for easy transport and operation in any working environment within the range of 18 to 28°C. The resistance standards require no controlled oil or air bath to meet specifications, however, for improved performance, they can be placed in an air bath such as the model 9300 or 9300A.

The Model 9331G is based on a NIST design which includes the split guard design and internal temperature sensor mounted directly on the resistor element.

All resistor connections are type N. Several adapter cables from N Type to GR, BNC etc. are available. Custom values are available upon request.

The Model 9331G is hermetically sealed in a shielded enclosure and isolated from the case. The Split guard circuit design allows for applying independant guard voltages at each side of the resistor.


Model Nominal Value Ohms Tolerance ± ppm Stability 1 Year Stability 2 Years TC 23°C ±5°C Maximum Voltage (& Gradient)
9331G/10M 10M 5 10 ppm 10 ppm ±5 ppm/°C 1kV 0.2 ppm/V
9331G/100M 100M 10 20 ppm 10 ppm ±5 ppm/°C 1kV 0.2 ppm/V
9331G/1G 1G 30 25 ppm 10 ppm ±5 ppm/°C 1kV 0.5 ppm/V
9331G/10G 10G 1% 25 ppm 20 ppm ±200 ppm/°C 1kV (1 ppm/V)
9331G/100G 100G 1% 200 ppm 50 ppm ±200 ppm/°C 1kV (5 ppm/V)
9331G/1T 1T 1% 500 ppm 300 ppm ±200 ppm/°C 1kV (5 ppm/V)
9331G/10T 10T 5% 700 ppm 500 ppm ±200 ppm/°C 1kV (25 ppm/V)
      9331G/100T            100T             10%             0.5%            0.25%          ±1%/°C 1kV (200 ppm/V)