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Generic NTC MF52 3950 100K Ohm Thermistor 1% Accuracy (Pack of 5)

₹32.00 (Inclusive of all taxes)
Out of Stock

The NTC MF52 3950 is a 100K ohm thermistor with ±1% tolerance, designed for precise temperature sensing and compensation in electronic circuits, compatible with Arduino, Raspberry Pi, and other microcontroller-based systems requiring analog temperature input.

Features

  • NTC (Negative Temperature Coefficient) thermistor with 100K ohm resistance at 25°C.
  • High Beta (B) value of 3950K for excellent sensitivity across a wide temperature range.
  • ±1% resistance tolerance ensures precise and repeatable temperature measurements.
  • Compact MF52 epoxy-coated bead design for easy integration into circuits and assemblies.
  • Ideal for temperature compensation, control, and monitoring in consumer electronics and DIY projects.

Out of stock

Description

The MF52 3950 thermistor operates on the principle of Negative Temperature Coefficient (NTC), where its electrical resistance decreases predictably as temperature increases. This high-sensitivity 100K ohm variant, characterized by a Beta (B) constant of 3950K, provides a steep resistance-temperature curve, making it highly responsive to small temperature changes. Its epoxy-coated bead construction offers durability and stability for reliable performance in various environments.

This sensor is commonly used in conjunction with a simple voltage divider circuit and an analog-to-digital converter (ADC) to provide a temperature reading to microcontrollers like Arduino, ESP32, or STM32. The 1% resistance tolerance allows for accurate system calibration, making it suitable for applications requiring precise thermal management or compensation, such as in power supplies, battery packs, and environmental monitoring devices.

Key Features

  • High-sensitivity NTC thermistor with 100KΩ @ 25°C and B-value of 3950K.
  • ±1% tight resistance tolerance for enhanced measurement accuracy and consistency.
  • Compact and robust epoxy-coated bead package (MF52) for easy PCB mounting or inline installation.
  • Wide operating temperature range suitable for general-purpose electronic temperature sensing.
  • Linearized output achievable through standard lookup tables or Steinhart-Hart equation calibration.
  • High-value build optimized for cost-effective temperature monitoring and control solutions.

Applications

  • Temperature sensing and compensation in 3D printer hotends and heated beds.
  • Battery temperature monitoring and protection circuits in power banks and DIY projects.
  • Environmental temperature logging for home automation and IoT sensor nodes.
  • Thermal management and overheating protection in power supplies and motor drivers.
  • DIY weather stations and greenhouse climate control systems.

Technical Specifications

Model / SeriesMF52 3950
Resistance @ 25°C100 kΩ
Resistance Tolerance±1%
Beta (B) Value3950 K
Sensor TypeNTC Thermistor
Package TypeEpoxy-Coated Bead (MF52)
Operating Temperature RangeApprox. -50°C to +125°C

Frequently Asked Questions

How do I interface this NTC thermistor with an Arduino?

Connect the thermistor in a voltage divider configuration with a fixed resistor (e.g., 100K ohm) between Vcc and GND, with the thermistor on the ground side. The junction connects to an analog input pin. Use the ADC reading with the Steinhart-Hart equation or a pre-calculated lookup table to convert the voltage to temperature. Libraries and example code are widely available.

What is the Beta (B) value of 3950K, and why is it important?

The Beta (B) value, or B-constant, is a material constant that defines the resistance-temperature relationship of the NTC thermistor. A value of 3950K indicates high sensitivity, meaning the resistance changes significantly with temperature, allowing for precise measurements. It is a critical parameter for accurate temperature calculation using the Steinhart-Hart equation.

Can I use this thermistor for high-temperature applications above 100°C?

While the MF52 epoxy package has a wide operating range, continuous exposure near or above 125°C may degrade the epoxy and affect long-term stability. For sustained high-temperature applications, consider a glass-encapsulated or high-temperature rated NTC thermistor. Always verify the maximum continuous operating temperature for your specific model.

What does the 1% tolerance mean for my measurements?

The ±1% tolerance refers to the allowable deviation of the thermistor's actual resistance from its nominal 100K ohm value at 25°C. A tighter tolerance like 1% means less initial resistance variation between individual sensors, leading to better measurement consistency and accuracy without requiring individual calibration for many applications.

Package Includes

  • 5 x NTC MF52 3950 100K Ohm Thermistor (1% Tolerance)

Additional Information

Weight 0.03 kg
Dimensions 5 × 6 × 1 cm