thermistors
121 Series Thermistor
Standard glass probe. -60 °C to 300 °C [-76 °F to 572 °F].
Please sign in to access more documents
Once signed in, you may be able to access additional documents for your account.
Overview
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]
Specifications
Please sign in to access more documents.
Once signed in, you may be able to access additional documents for your account.
Manuals and Guides
Name
Description
File Size
Date
Size
Temperature Sensors Line Guide
application/pdf 293.8 KB
8/13/2025
293.8 KB
Brochure
Name
Description
File Size
Date
Size
Brochure about Honeywell's Sensor & Switch Solutions for HVAC.
application/pdf 11.68 MB
2/16/2026
11.68 MB
Sensing Solutions For Industrial Applications Brochure
application/pdf 16.68 MB
1/22/2026
16.68 MB
Application Note
Name
Description
File Size
Date
Size
Agricultural Vehicles Application Note
application/pdf 1.11 MB
8/20/2025
1.11 MB
Solutions for Hematology Analyzers
application/pdf 2.26 MB
8/14/2025
2.26 MB
Solutions for Molecular Diagnostics
application/pdf 2.61 MB
8/14/2025
2.61 MB
Name
Description
File Size
Date
Size
Agricultural Vehicles Application Note
application/pdf 1.11 MB
8/20/2025
1.11 MB
Brochure about Honeywell's Sensor & Switch Solutions for HVAC.
application/pdf 11.68 MB
2/16/2026
11.68 MB
Temperature Sensors Line Guide
application/pdf 293.8 KB
8/13/2025
293.8 KB
Sensing Solutions For Industrial Applications Brochure
application/pdf 16.68 MB
1/22/2026
16.68 MB
Solutions for Hematology Analyzers
application/pdf 2.26 MB
8/14/2025
2.26 MB
Solutions for Molecular Diagnostics
application/pdf 2.61 MB
8/14/2025
2.61 MB
Name
Description
File Size
Date
Size
Brochure about Honeywell's Sensor & Switch Solutions for HVAC.
11.68 MB
2/16/2026
Sensing Solutions For Industrial Applications Brochure
16.68 MB
1/22/2026
Product Number
Please sign in to view part numbers available for purchase based on your account Sign In
Part Number
Compare
Description
Leaf Category
Thumbnail
Add to list
121-102EAC-Q01
THERMAL-THERMISTORS GLASS BEADPROB
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-honeywell-sensing-thermistors-121-series-ciid-161228
121-102EAC-Q01
THERMAL-THERMISTORS GLASS BEADPROB
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-honeywell-sensing-thermistors-121-series-ciid-161228
121-102EAJ-Q01
THERMAL-THERMISTORS
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-honeywell-sensing-thermistors-121-series-ciid-161228
121-102EAJ-Q01
THERMAL-THERMISTORS
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-honeywell-sensing-thermistors-121-series-ciid-161228
121-103FAC-Q01
TEMPERATURE PROBE
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-honeywell-sensing-thermistors-121-series-ciid-161228
121-103FAC-Q01
TEMPERATURE PROBE
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-honeywell-sensing-thermistors-121-series-ciid-161228
121-103FAC-Q02
THERMAL-THERMISTORS GLASS BEADPROB
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-honeywell-sensing-thermistors-121-series-ciid-161228
121-103FAC-Q02
THERMAL-THERMISTORS GLASS BEADPROB
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-honeywell-sensing-thermistors-121-series-ciid-161228
121-103FAD-S02
TEMPERATURE PROBE
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-honeywell-sensing-thermistors-121-series-ciid-161228
121-103FAD-S02
TEMPERATURE PROBE
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-honeywell-sensing-thermistors-121-series-ciid-161228
121-103FAD-S03
THERMAL-THERMISTORS GLASS BEADPROB
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-honeywell-sensing-thermistors-121-series-ciid-161228
121-103FAD-S03
THERMAL-THERMISTORS GLASS BEADPROB
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-honeywell-sensing-thermistors-121-series-ciid-161228
121-103FAF-Q01
THERMAL-THERMISTORS
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-honeywell-sensing-thermistors-121-series-ciid-161228
121-103FAF-Q01
THERMAL-THERMISTORS
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-honeywell-sensing-thermistors-121-series-ciid-161228
121-103FAJ-Q01
121 Series, standard glass probe, 10,000 Ohm resistance, ±20.0% tolerance, 2585 BETA = 3669
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-honeywell-sensing-thermistors-121-series-ciid-161228
121-103FAJ-Q01
121 Series, standard glass probe, 10,000 Ohm resistance, ±20.0% tolerance, 2585 BETA = 3669
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-honeywell-sensing-thermistors-121-series-ciid-161228
121-104KAF-Q01
THERMAL-THERMISTORS
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-honeywell-sensing-thermistors-121-series-ciid-161228
121-104KAF-Q01
THERMAL-THERMISTORS
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-honeywell-sensing-thermistors-121-series-ciid-161228
121-104KAF-W01
THERMAL-THERMISTORS
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-honeywell-sensing-thermistors-121-series-ciid-161228
121-104KAF-W01
THERMAL-THERMISTORS
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-honeywell-sensing-thermistors-121-series-ciid-161228
