Glass Thermistors
Last Updated: April 1, 2025
Description
Glass thermistors are temperature-sensitive resistors encapsulated in a glass body. They are designed to measure temperature by exhibiting a change in electrical resistance with a change in temperature. These devices are known for their precision and stability in temperature measurement.
Working Principle
Glass thermistors operate based on the principle of resistance change with temperature. They are typically made from semiconductor materials that exhibit a significant change in resistance with temperature variations. There are two main types of thermistors: Negative Temperature Coefficient (NTC) and Positive Temperature Coefficient (PTC). NTC thermistors decrease in resistance as temperature increases, while PTC thermistors increase in resistance with rising temperature. This property makes them highly useful for precise temperature monitoring and control.
Applications
Glass thermistors are used in a variety of applications due to their precision and stability. They are commonly found in precision instrumentation applications such as hand-held meters and temperature gauges. Additionally, they are used in battery pack charging systems and laser drives, where accurate temperature monitoring is crucial.
Advantages over other Thermistors
Glass thermistors offer several advantages over other types of thermistors. They are known for their high degree of stability and accuracy, which makes them suitable for applications requiring precise temperature measurements. Their small size also allows for easy integration into various systems.
Limitations
Despite their advantages, glass thermistors have some limitations. They are known to have a limited temperature range, which can restrict their use in extreme temperature environments. Additionally, they can be fragile, which may pose challenges in certain applications where durability is a concern.
Considerations
When considering the use of glass thermistors, several factors should be taken into account. The initial cost of glass thermistors can be higher compared to other temperature sensing devices. However, their long-lasting nature and high accuracy can offset these costs over time. Operating expenses are generally low, but care must be taken to avoid conditions that could lead to self-heating, which can affect accuracy. Durability is a consideration due to their fragile nature, and maintenance costs may include periodic calibration to ensure continued accuracy.
from TE Connectivity
Body Features. Wire Connection : Open End. Dimensions. Discrete NTC Wire Length (MM) : 76. Operation/Application. Wire/Cladding Connection : 32 AWG (.2mm) Gold Plated Dumet wire. Packaging Features. Discrete NTC Package : Glass Radial Discrete. Product Type Features. [See More]
- Coating: Glass
- Resistance (@25°C): 30000
- Temperature Range: -40 to 200
- Length: 2.99
from DigiKey
NTC Thermistor 100k Bead, Glass [See More]
- Coating: Glass
- Resistance (@25°C): 100000
- Temperature Range: -60 to 300
- Package / Electrode Type: Bead
from TE Connectivity
Body Features. Wire Connection : Open End. Dimensions. Discrete NTC Wire Length (MM) : 76. Operation/Application. Wire/Cladding Connection : 32 AWG (.2mm) Gold Plated Dumet wire. Packaging Features. Discrete NTC Package : Glass Radial Discrete. Product Type Features. [See More]
- Coating: Glass
- Resistance (@25°C): 5000
- Temperature Range: -55 to 150
- Length: 2.99
from DigiKey
NTC Thermistor 1k Bead, Glass [See More]
- Coating: Glass
- Resistance (@25°C): 1000
- Temperature Range: -60 to 300
- Package / Electrode Type: Bead
from TE Connectivity
Body Features. Wire Connection : Open End. Dimensions. Discrete NTC Wire Length (MM) : 65. Operation/Application. Wire/Cladding Connection : 32 AWG (.2mm) Gold Plated Dumet wire. Packaging Features. Discrete NTC Package : Glass Radial Discrete. Product Type Features. [See More]
- Coating: Glass
- Length: 2.56
- Temperature Range: -55 to 150
from DigiKey
NTC Thermistor 10k Cylindrical Probe, Glass [See More]
- Coating: Glass
- Resistance (@25°C): 10000
- Temperature Range: -60 to 300
- Housing: Probe/Closed Tube
from TE Connectivity
Body Features. Wire Connection : Open End. Dimensions. Discrete NTC Wire Length (MM) : 40. Operation/Application. Wire/Cladding Connection : 36 AWG (0.5mm) Axial Tin/Nickel Plated Copper. Packaging Features. Discrete NTC Package : Glass Axial Discrete. Product Type... [See More]
- Coating: Glass
- Length: 1.57
- Temperature Range: -40 to 250
from DigiKey
NTC Thermistor 1k Cylindrical Probe, Glass [See More]
- Coating: Glass
- Resistance (@25°C): 1000
- Temperature Range: -60 to 300
- Housing: Probe/Closed Tube
from TE Connectivity
Body Features. Wire Connection : Open End. Dimensions. Discrete NTC Wire Length (MM) : 31. Operation/Application. Wire/Cladding Connection : 27 AWG (0.5mm) Axial Tin/Nickel Plated Copper. Packaging Features. Discrete NTC Package : Glass Axial Discrete. Product Type... [See More]
- Coating: Glass
- Resistance (@25°C): 10000
- Temperature Range: -40 to 250
- Length: 1.22
from DigiKey
THERM NTC 100KOHM 4040K BEAD [See More]
- Coating: Glass
- Resistance (@25°C): 100000
- Temperature Range: -40 to 300
- Package / Electrode Type: Bead
from TE Connectivity
Body Features. Wire Connection : Open End. Dimensions. Discrete NTC Wire Length (MM) : 10. Operation/Application. Wire/Cladding Connection : Platinum/Iridium, .04mm OD. Packaging Features. Discrete NTC Package : Miniature Glass Axial. Product Type Features. Discrete... [See More]
- Coating: Glass
- Resistance (@25°C): 10000
- Temperature Range: -40 to 250
- Length: 0.3937
from DigiKey
NTC Thermistor 10k Bead, Glass [See More]
- Coating: Glass
- Resistance (@25°C): 10000
- Temperature Range: -40 to 200
- Package / Electrode Type: Bead
from DigiKey
NTC Thermistor 10k Probe [See More]
- Coating: Glass
- Resistance (@25°C): 10000
- Temperature Range: -40 to 180
- Housing: Probe/Closed Tube
from DigiKey
SUPER STABLE GLASS NTC THERMISTO [See More]
- Coating: Glass
- Resistance (@25°C): 2252
- Temperature Range: -55 to 150
- Package / Electrode Type: Bead
from DigiKey
NTC Thermistor 10.74k Bead, Glass [See More]
- Coating: Glass
- Resistance (@25°C): 10740
- Temperature Range: -50 to 300
- Package / Electrode Type: Bead
from DigiKey
NTC Thermistor 1.39M Bead, Glass [See More]
- Coating: Glass
- Resistance (@25°C): 1.39E6
- Temperature Range: -50 to 300
- Package / Electrode Type: Bead
from DigiKey
NTC Thermistor 231k Bead, Glass [See More]
- Coating: Glass
- Resistance (@25°C): 231000
- Temperature Range: -50 to 300
- Package / Electrode Type: Bead
from DigiKey
NTC Thermistor 49k Bead, Glass [See More]
- Coating: Glass
- Resistance (@25°C): 49000
- Temperature Range: -50 to 300
- Package / Electrode Type: Bead
from DigiKey
DO-35 GLASS AXIAL,10K OHM,+/-0.2 [See More]
- Coating: Glass
from DigiKey
GLASS NTC MOUNTING -10K1% B3600 [See More]
- Coating: Glass
- Resistance (@25°C): 10000
- Temperature Range: -40 to 250
- Beta: 3600
from DigiKey
NTC Thermistor 1k Bead, Glass [See More]
- Coating: Glass
- Resistance (@25°C): 1000
- Temperature Range: -25 to 125
- Package / Electrode Type: Bead
from DigiKey
NTC Thermistor 22k Bead, Glass [See More]
- Coating: Glass
- Resistance (@25°C): 22000
- Temperature Range: -40 to 175
- Package / Electrode Type: Bead
from DigiKey
NTC Thermistor 5k Bead, Glass [See More]
- Coating: Glass
- Resistance (@25°C): 5000
- Temperature Range: -40 to 300
- Package / Electrode Type: Bead
from DigiKey
NTC Thermistor 10k Cylindrical Probe, Glass [See More]
- Coating: Glass
- Resistance (@25°C): 10000
- Temperature Range: -80 to 200
- Housing: Probe/Closed Tube
from DigiKey
NTC Thermistor 8k Cylindrical Probe, Glass [See More]
- Coating: Glass
- Resistance (@25°C): 8000
- Temperature Range: -80 to 200
- Housing: Probe/Closed Tube
from DigiKey
NTC Thermistor 200k Cylindrical Probe, Glass [See More]
- Coating: Glass
- Resistance (@25°C): 200000
- Temperature Range: -80 to 200
- Housing: Probe/Closed Tube
from DigiKey
NTC Thermistor 6.2K Bead, Glass [See More]
- Coating: Glass
- Resistance (@25°C): 6200
- Temperature Range: -80 to 300
- Package / Electrode Type: Bead
from DigiKey
NTC Thermistor 1k Bead, Glass [See More]
- Coating: Glass
- Resistance (@25°C): 1000
- Temperature Range: -40 to 300
- Package / Electrode Type: Bead
from DigiKey
NTC Thermistor 10k Bead, Glass [See More]
- Coating: Glass
- Resistance (@25°C): 10000
- Temperature Range: -20 to 250
- Package / Electrode Type: Bead
from DigiKey
NTC Thermistor 100k Bead, Glass [See More]
- Coating: Glass
- Resistance (@25°C): 100000
- Temperature Range: -20 to 250
- Package / Electrode Type: Bead
from DigiKey
NTC Thermistor 50k Bead, Glass [See More]
- Coating: Glass
- Resistance (@25°C): 50000
- Temperature Range: -20 to 250
- Package / Electrode Type: Bead
from OMEGA Engineering, Inc.
The OMEGA 55000 Series glass encapsulated thermistors provide a higher temperature alternative to the OMEGA 44000 Series epoxy coated thermistors where needed. With a maximum continuous temperature rating of -80 to 200°C (-112 to 392°F), and intermittent operation to 250°C (482°F), the 55000 Series... [See More]
- Coating: Glass
- Resistance (@25°C): 2252 to 10000
- Temperature Range: -80 to 150
- Thermal Time Constant: 15
from U.S. Sensor
U.S. Sensor offers a wide selection of NTC thermistors for a variety of applications in industries such as automotive, food handling and processing, telecommunications, medical and scientific research, military/defense, and consumer electronics where accurate temperature measurement and control are... [See More]
- Coating: Glass
- Beta: 2826 to 4668
- Resistance (@25°C): 100 to 1.00E6
- Package / Electrode Type: Chip/Surface
from Honeywell Sensing & IoT
111 Series Thermistors are hermetically sealed in glass. They feature relatively uniform size, offer fast time response and are highly sensitive to electric power. They are often suited for use in low heat capacity applications and their micro size allows them to be used in extremely small... [See More]
- Coating: Glass
- Resistance (@25°C): 1000
- Temperature Range: -60 to 300
- Thermal Time Constant: 0.5000
from Ohmite Manufacturing Co.
The TX series is the first thermistor released by Ohmite. The TX series is avaiable in 3 sizes (0402,0603, and 0805). The B-constant of the TX series is taken at 25 °C to 85 °C with values ranging from 2750K and 4700K. With AEC-Q200 compliance available, your automotive applications await... [See More]
- Coating: Glass
- Thermal Time Constant: 1.5 to 2.5
- Temperature Range: -40 to 52
- Dissipation Constant: 1.1 to 1.3
from U.S. Sensor
U.S. Sensor offers a wide selection of NTC thermistors for a variety of applications in industries such as automotive, food handling and processing, telecommunications, medical and scientific research, military/defense, and consumer electronics where accurate temperature measurement and control are... [See More]
- Coating: Glass
- Beta: 2941 to 4640
- Resistance (@25°C): 500 to 5.00E6
- Dissipation Constant: 2 to 3
from Honeywell Sensing & IoT
120 Series and 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. They are available in two configurations: standard and mini. [See More]
- Coating: Glass
- Resistance (@25°C): 1000
- Temperature Range: -60 to 300
- Thermal Time Constant: 10
from U.S. Sensor
U.S. Sensor ™s high temperature glass probe thermistors feature superior long-term stability and fast thermal response. Their small size and glass encapsulation makes them especially suitable for temperature measurement and control where space is limited and where extreme temperatures,... [See More]
- Coating: Glass
- Beta: 3348 to 4263
- Resistance (@25°C): 1000 to 100000
- Package / Electrode Type: Bead
from Honeywell Sensing & IoT
135 Series Thermistors are high-quality, hermetically-sealed, glass-encapsulated units in an axial lead package. They cover the full temperature range of -60 °C to 300 °C [-76 °F to 572 °F]. The uniform dimensions are often suited for automated assembly. The tinned copper-clad,... [See More]
- Coating: Glass
- Resistance (@25°C): 1000
- Temperature Range: -60 to 300
- Thermal Time Constant: 4