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Thermistors

121 Series

Standard glass probe. -60 °C to 300 °C [-76 °F to 572 °F]

Distributor Inventory

121 Series Thermistors are shock resistant, rugged, glass-encapsulated units that are often suited for immersion in fluid and convenient for mounting in air sensor assemblies. Also available in a mini glass probe configuration (120 Series).

  • Dissipation constant in still air: 1,0 mW/°C
  • Time constant in air: 22.0 s
  • Nominal resistance at [25 °F to 77 °F]: 2,000 Ohm, 5,000 Ohm, 10,000 Ohm, 50,000 Ohm, 100,000 Ohm, 1,000,000 Ohm
  • Maximum diameter: 2,54 mm [0.10 in]
  • Termination material: dumet
  • Lead length: 50,8 mm [2.00 in]

Others

  • Resistance
    • 5,000 Ohm
    • 2,000 Ohm
    • 100,000 Ohm
    • 1,000,000 Ohm
    • 10,000 Ohm
    • 50,000 Ohm
  • Operating Temperature
    • -60 °C to 300 °C [-76 °F to 572 °F]
  • Accuracy
    • 25 °C [77 °F]
  • Time Constant in Air
    • 22.0 s
  • Diameter
    • 2,54 mm [0.10 in]
  • Termination Material
    • Dumet lead
  • Lead Length
    • 50,8 mm [2.00 in]
  • Tolerance
    • ±20.0%
  • Series Name
    • 121
  • Dissipation Constant
    • 1,0 m/W°C
  • Beta
    • 4268
    • 3518
    • 3669
    • 4716
    • 4061

Others

  • Resistance
    • 5,000 Ohm
    • 2,000 Ohm
    • 100,000 Ohm
    • 1,000,000 Ohm
    • 10,000 Ohm
    • 50,000 Ohm
  • Operating Temperature
    • -60 °C to 300 °C [-76 °F to 572 °F]
  • Accuracy
    • 25 °C [77 °F]
  • Time Constant in Air
    • 22.0 s
  • Diameter
    • 2,54 mm [0.10 in]
  • Termination Material
    • Dumet lead
  • Lead Length
    • 50,8 mm [2.00 in]
  • Tolerance
    • ±20.0%
  • Series Name
    • 121
  • Dissipation Constant
    • 1,0 m/W°C
  • Beta
    • 4268
    • 3518
    • 3669
    • 4716
    • 4061
  • Resistance : 5,000 Ohm|2,000 Ohm|100,000 Ohm|1,000,000 Ohm|10,000 Ohm|50,000 Ohm
  • Operating Temperature : -60 °C to 300 °C [-76 °F to 572 °F]
  • Termination Material : Dumet lead
  • Accuracy : 25 °C [77 °F]
  • Lead Length : 50,8 mm [2.00 in]
  • Tolerance : ±20.0%
  • Series Name : 121
  • Time Constant in Air : 22.0 s
  • Dissipation Constant : 1,0 m/W°C
  • Diameter : 2,54 mm [0.10 in]
  • Beta : 4268|3518|3669|4716|4061
Manuals and Guides
Name
Description
File Size
Date
Size
Thermal Sensors
977.58 KB
5/11/2021
PDF 977.58 KB
Temperature Sensors Line Guide
293.8 KB
5/10/2021
PDF 293.8 KB
Name
Description
File Size
Date
Size
Thermal Sensors
977.58 KB
5/11/2021
PDF 977.58 KB
Temperature Sensors Line Guide
293.8 KB
5/10/2021
PDF 293.8 KB
Image
SKU
Description
alt
121-202EAJ-Q01
121 Series, standard glass probe, 2,000 Ohm resistance, ±20.0% tolerance, 25/85 BETA = 3518
alt
121-103FAJ-Q01
121 Series, standard glass probe, 10,000 Ohm resistance, ±20.0% tolerance, 25/85 BETA = 3669