Platinum specifications


Standard curve IEC 751

Recommended excitation 1 mA

Dissipation at recommended excitation 100 µW at 273 K

Thermal response time PT-102 & PT-103: 1.75 s at 77 K, 12.5 s at 273 K; PT-111: 2.5 s at 77 K, 20 s at 273 K

Use in radiation Recommended for use in ionizing radiation environments — more information

Use in magnetic field Because of their relatively low magnetic field dependence above 30 K, platinum sensors are useful as control elements in magnetic field applications when some error can be tolerated —  more information

Reproducibility1 ±5 mK at 77 K

Soldering standard J-STD-001 Class 2

1 Short-term reproducibility data is obtained by subjecting sensor to repeated thermal shocks from 305 K to 77 K

Range of use

 Minimum limitMaximum limit
PT-10214 K 873 K2
PT-103 14 K873 K2
PT-111 14 K673 K

2 Maximum temperature limited to 800 K if using AL or AM packages
Note: For use above 500 K, anneal at Tmax +10 °C for 4 h

SoftCal™ accuracy

 73 K to 305 K305 K to 400 K400 K to 475 K475 K to 500 K500 K to 670 K
2S±0.25 K±0.9 K±1.3 K±1.4 K±2.3 K
3S±0.25 K±0.25 K±0.25 K±1.4 K±2.3 K

2S: 77 K and 305 K
3S: 77 K, 305 K and 475 K

Calibrated accuracy

 Typical sensor accuracy3Long-term stability4
 Calibrations to 800 KAll other calibrations
30 K±10 mK±10 mK
77 K ±12 mK±12 mK±10 mK
305 K ±23 mK±23 mK
400 K ±210 mK±41 mK
500 K±210 mK±46 mK
800 K±310 mK

3 [(Calibration uncertainty)2 + (reproducibility)2]0.5 for more information, see Appendices B, D, and E

4 If not heated above 475 K—long-term stability data is obtained by subjecting sensor to 200 thermal shocks from 305 K to 77 K

Temperature response data table (typical)

 R (Ω) PT-100
S (
20 K 2.29130.0850.74
50 K9.38650.3601.90
77 K20.3800.4231.60
150 K50.7880.4091.20
300 K 110.3540.3871.10
600 K 221.5350.3721.00
800 K 289.7890.3601.00

Click here for expanded response table

PT-100 Series interchangeability

PT-100 Series interchangeability

Physical specifications

 MassLead typeInternal atmosphereMaterials used Maximum vacuumNon-magnetic packaging
250 mg2, platinum Partially filled powderPlatinum winding partially supported by a high-temperature alumina powder inside a ceramic tube, platinum lead wires Not recommended for vacuumYes
PT-103120 mg2, platinum 95%, rhodium 5% alloyFully filled powderPlatinum winding fully supported by a high-temperature alumina powder inside a ceramic tube, platinum/rhodium lead wires1 × 10-4 PaYes
PT-11152 mg2, platinumSolid glassOne platinum band wound onto a glass tube, which is protected from the environment by a layer of glaze, platinum-coated nickel lead wires 1 × 10-7 PaNo


Platinum calibration ranges

Platinum calibration ranges

See the matched platinum sensor page for instructions on matched part numbers

Typical magnetic field-dependent temperature errors4 Δ T/T (%) at B (magnetic induction)

Package base parallel to field B
T (K)2.5 T 5 T8 T14 T19 T

4 Recommended for use when T = 30 K

PT 102 package PT 103 package PT 111 package PT AL package PT AM package