Typical resistance values:

T(K) R(Ω) dR/dT(Ω/K) 

1.2K 2.3674 0.2802 

4.2K 3.1602 0.2319 

20K 5.251 0.0771 

77K 11.898 0.1802 

150K 26.308 0.1986K 

273K 50 0.1907                

Calibration range and accuracy: Model Calibration Range Accuracy

Model Calibration Range Accuracy 

RF-50-BC-1.2L 1.2K~300K 0.1K 

RF50-SQ-1.2L 1.2K~300K 0.1K 

Thermometer Accuracy = (Calibration Uncertainty2 + Repeatability2) 0.5 

Physical Characteristics:

 Size Mass Internal Form Material 

RF50-BC φ2.2mm*20mm 500mg 2.Platinum Solid Rhodium-iron alloy wire, ceramic package, aluminum oxide case 

Ordering Information

Model number interpretation:    

RF: Rhodium-Iron 50: 50Ω@ 273.15K BC: Bare chip, bare chip 1.2L: 1.2K~300K 

 SQ: Square, rectangular shape       

Selection table:

Model No. RF50-BC RF50-SQ 

2L √ pair 

Attachment: Dimension Drawing (mm)