This is paragraph text. Click it or hit the Manage Text button to change the font, color, size, format, and more. To set up site-wide paragraph and title styles, go to Site Theme.

Thermistors & Thermistor Probes

This is paragraph text. Click it or hit the Manage Text button to change the font, color, size, format, and more. To set up site-wide paragraph and title styles, go to Site Theme.

This is paragraph text. Click it or hit the Manage Text button to change the font, color, size, format, and more. To set up site-wide paragraph and title styles, go to Site Theme.

Thermistors & Thermistor Probes

EI Sensor Technologies is pleased to offer a wide variety of Thermistor sensors with resistance values ranging from 100 ohms to 5M ohms and tolerances such as ±1%, ±2%, etc. and even as accurate as ±0.1°C. We carry everything from NTC Thermistors to PTC Thermistors and Thermistor Probes. Selecting a temperature sensor has never been easier!

Our thermistor Offerings

Our high-temperature Glass Body thermistors are available in both axial and radial leaded configurations, ensuring versatility for your applications. Additionally, our Epoxy Coated thermistor selections come with options for radial uninsulated lead wires or lead wires insulated with Kynar and Teflon, providing reliability in diverse environmental conditions. For those seeking maximum precision, our interchangeable epoxy coated thermistors deliver tight accuracy down to +/- 0.1 degrees Celsius.


For our Surface Mount thermistors, we offer a range of solutions, including End-Banded Chip thermistors in sizes such as 1206, 0805, 0603, and 0402, as well as high-temperature MELF options in several package sizes.

PTC Thermistor

Thermistors are THERMally sensitive resISTORS whose electrical resistance changes when subjected to a corresponding change in body temperature.

Thermistors

Negative-temperature-coefficient (NTC) thermistors decrease in electrical resistance as their body temperature rises.

Thermistor Probes

EI Sensor Technologies offers a wide range of Thermistor probes to meet the most demanding temperature sensing requirements.

Miscellaneous

Various styles including Thin-Film thermistors and Inrush Current Limiting Power thermistors

FILL OUT technical form application

Common applications

Air Conditioners

Automation Control

Boilers

Building Automation

Central Air Systems

Condensor Coils

Duct Temperature Sensors

Heat Pumps

Heating Systems

Humidifiers/Dehumidifiers

HVAC Controllers & Equipment

Indoor/Outdoor Remote Sensing

Radiant Floor Heating

Thermostats

Appliances & White Goods

Clothes Dryers

Coffee Makers

Dishwashers

Electric Blanket Controls

Freezers

Oven Temperature Control

Refrigerators

Thermometers

Washing Machines

Water Heaters

Air/Water Temperature Monitoring

Controls

Heat Pumps

Heaters

Deep Fryers

Food Storage Systems

Ice Machines

Pasta Cookers

Prep Stations

Refrigerated Display Cases

Refrigerated Vending Machines

Sous Vide (LTLT-low temp long time)

Temperature Controlled Food Storage Systems

Toasters

Walk-In Commercial Refrigeration

Warming Trays

Commercial Vending Machines

Crystal Ovens

Fire Detectors

Fluid Flow Measurement

Gas Flow Indicators

Industrial Process Controls

Liquid Level Indicators

Microwave Power Measurement

Photographic Processing Equipment

Plastic Laminating Equipment

Rechargeable Battery Packs

Solar Energy Equipment

Thermoplastic Molding Equipment

Thermostats

Water Purification Equipment

Welding Equipment

Blood Analysis Equipment

Hemodialysis Machines

MRI Scanners

Blood Oxygenator Equipment

Cardiac Ablation

Fever Thermometers

Esophageal Tubes

Internal Body Temperature Monitors

Intravenous Injection Temperature Regulators

Organ Transplant

Patient Warming

Ventilators

Skin/Body Temperature Monitors

Thermodilution Catheter Probes

Audio Amplifiers

Automatic Climate Control

Coolant Sensors

Electric Coolant Fan Temperature Control

Emission Controls

Engine Block Temperature Sensors

Engine Oil Temperature Sensors

Electric Vehicle Battery Management

Hydrogen Fuel Sales

Intake Air Temperature Sensors

Oil Level Sensors

Outside Air Temperature Sensor

Perishable Shipping

Transmission Oil Temperature Sensors

Water Level Sensors

Consumer

Cell Phones

Electronic Thermometers

Home Weather Stations

Power Supplies (inrush current limiting)

Solar Collector Controls

Uninterruptible Power Supplies (over temperature sensing)

Energy, Renewable/Non-Renewable

Hydrogen Fuel Cells

Lead Acid Battery Management

Solar Panels

Wind Turbines

Which Thermistor Do I Need?

Type of Thermistor PTC NTC Probes
Glass Body # #
Surface Mount # #
Surface Temperature Sensing #
Threaded #
Straight #
Flanged #
Vinyl & Plastic #

Temperature Sensing Insights

Five black round thermistors with silver leads, varying in size.

What Is an Inrush Current Limiter? Types, Uses, & Benefits

January 9, 2026
Learn what an inrush current limiter is, how NTC and PTC types work, key benefits, and applications from EI Sensor.
HVAC technician uses gauges on an air conditioning unit; red and blue gauges attached.

How Temperature Sensors Improve Efficiency in HVAC Systems

January 9, 2026
Learn how temperature sensors improve HVAC efficiency and control while EI Sensor delivers reliable thermistors and RTDs for modern HVAC systems.
Assorted temperature sensors with various shapes and wire configurations.

Top Applications for Temperature Sensors Across Sectors

January 5, 2026
Explore top applications for temperature sensors across industries and how EI Sensor supports HVAC, medical, industrial, and food processing needs.

partner with ei sensor

Using the highest quality materials, state of the art equipment and proprietary production techniques, EI Sensor is dedicated to producing a temperature sensor that meets or exceeds our customers’ requirements. With a strong commitment to quality, continuous improvement is necessary. Our team continues to invest in research and development of new processes as well as enhancing existing processes that will result in a precise, efficient, cost effective thermistor, RTD or temperature probe assembly.