Thermistor

Key Features

• High Sensitivity: Detects even minute fluctuations in temperature for high-accuracy readings.
• Fast Response Time: Small thermal mass allows the sensor to react quickly to environmental changes.
• Compact Design: Small epoxy-coated bead fits into tight spaces and can be easily potted or glued to heat sources.
• Excellent Stability: Maintains long-term accuracy and reliability over thousands of thermal cycles.
• Easy Interface: Simple to use with a voltage divider circuit on any microcontroller’s ADC pin (Arduino, ESP32, STM32).

Technical Specifications 

Nominal Resistance                      1 kΩ,5 KΩ, 10 kΩ, 100 KΩ

B-Constant                                     3435K, 3950K (Typical)

Resistance Tolerance                   $\pm1\%, \pm3\%, \pm5\%$

Operating Temperature              -40°\text{C}$ to $+125°\text{C}$

Dissipation Constant                   2Mw/C

Thermal Time Constant               10s (in still air)

Package Styles                               Radial Leaded (Epoxy Bead), Glass Encapsulated, SMD

Common Applications

• Temperature Measurement: Used in digital thermometers, weather stations, and thermostats.
• Battery Management (BMS): Monitoring the temperature of Li-ion battery packs during charging to prevent overheating.
• 3D Printers & Appliances: Controlling the heat of 3D printer nozzles (hotends), ovens, and refrigerators.
• HVAC Systems: Sensing air and liquid temperatures in heating and cooling units.

Inrush Current Limiting: (Specifically for Power NTCs) Protecting circuits from high initial current surges when powered on.